CN109412139B

CN109412139B - 380V electric shock-proof short-circuit-proof safe energy-saving electric appliance

Info

Publication number: CN109412139B
Application number: CN201710739687.4A
Authority: CN
Inventors: 陈金明; 陈大超
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-18
Filing date: 2017-08-18
Publication date: 2022-09-06
Anticipated expiration: 2037-08-18
Also published as: CN109412139A

Abstract

The invention relates to a 380V electric shock and short circuit preventing safe and energy-saving electrical appliance which can be directly matched with a transformer and can be independently used in a factory building and a workshop. It can replace distribution box, electric shock protector, electric welder and air switch. The problems of power transmission, electric shock prevention, grounding prevention, thunder prevention, high voltage series low voltage prevention and welding machine electric welding cancellation by using a Beidou seven-star connection method, a control circuit, a switching circuit and a lightning protection circuit in a controller are solved, and the loss of the welding machine, a rain line and line power failure inflow ground is saved; the problems of short circuit of an output 380V three-phase four-wire power supply and power cut, transmission and short circuit prevention after fault removal are solved by three paths of photoelectric control, time delay control, a non-contact switch, short circuit information feedback and a fault audio prompt circuit. The potential safety hazard hidden among people is eliminated, the tiger frightened by people is cured, the problem of safe power utilization is solved, the world blank is filled, and the electric power utilization history is a revolution.

Description

380V electric shock-proof short-circuit-proof safe energy-saving electric appliance

Technical Field

The invention relates to a 380V electric shock preventing and short circuit preventing safe and energy-saving electrical appliance which is further researched and improved through multiple tests on the basis of an invention patent of 'three-phase alternating current power supply electric shock preventing and short circuit preventing contactless energy-saving safety device' 200410056149.8 by the inventor. The 380V three-phase alternating-current power supply is suitable for all places using 380V three-phase alternating-current power supplies in factories, rural areas, mines, enterprises and public institutions and the like, can replace a distribution box to be directly matched with a transformer, can also be directly installed in plants, workshops and subsidiary users, and can also be installed in families. The utility model has the following characteristics: firstly, preventing electric shock by wire contact; secondly, short circuit prevents fire; thirdly, grounding to prevent power consumption; fourthly, rain and lightning protection are carried out; fifthly, preventing high voltage from entering low voltage; sixthly, replacing a distribution box; seventhly, an electric welding machine is cancelled, so that cost and energy are saved; and eighthly, the power transmission switch is contactless.

Background

In 1752, when a scientist franklin finds electricity generated in nature and introduces and stores the electricity, the scientist brings human into a brand new electric power world, and the world presents extraordinary vitality and develops ahead at an unprecedented speed. Nowadays, electricity is inseparable with the progress and development of modern civilized society and is closely related to our daily life. However, with the accelerated development of the modernization of society and the popularization of various household appliances in various industries, the safety of power utilization is more and more regarded as important in various social circles. According to inquiry, the number of people who die due to electric shock every year in the whole country is counted, and hundreds of millions of yuan is lost due to short circuit and fire catching. Particularly, private pulling illegal operation is carried out in regions where the economy is not reached, rural areas and construction sites, a lot of power utilization hidden dangers are exposed, serious economic loss is caused to the society directly or indirectly, and a layer of shadow is formed for the life of people.

The electric energy is well used, and the electric energy can bring benefits to mankind like a cow and a horse; the prevention is not good, and the disaster is brought to human beings like tigers. It is an invisible, hidden energy consisting of free electrons in a conductor. Applying a direct current voltage to the conductor, and enabling the conductor to regularly flow in one direction; an alternating voltage is applied to the wire, and the wire regularly flows back and forth in two directions. The larger the conductor sectional area is, the larger the current is; the higher the applied voltage, the further the flow transport distance. The voltage is three-phase alternating current with the frequency of 50 Hz generated by a magnetic generator at power stations (such as nuclear power stations, thermal power stations, hydroelectric power stations, wind power stations, internal combustion engine generator sets and the like), is boosted to required destinations such as 6600V, 11000V, 66000V, 110000V and the like through a transformer according to the transmission distance, and is reduced to 380V three-phase four-wire alternating current through the transformer for people to use. The three-phase 380V line voltage is used for a three-phase motor, and the 220V phase voltage is used for lighting and single-phase electric appliances. The three-phase 380V line voltage is a loop formed by internal windings of a three-phase motor, and a rotating magnetic field is formed to rotate and do work; the 220V phase voltage is a circuit formed by any one of three live wires and a neutral return line through a single-phase electric appliance, the neutral return line is a so-called neutral wire, and the neutral wire is tightly connected with the ground. Therefore, if a person stands on the ground and touches any live wire, the live wire and the zero wire form a loop like an electric appliance, and an electric shock casualty accident is caused. Therefore, the electricity looks like a hidden tiger, is often accompanied among people, and can bring harm to the life and property of people at any time and any place. However, due to the fact that people often contact with electrical appliances in close proximity in many electromechanical devices and various household electrical appliances in industrial and agricultural production, electric shock and short circuit fire accidents are obvious. The following problems exist in the current aspects of safe energy-saving electricity utilization in China: firstly, the problem of electric shock prevention caused by the electrified line contact is solved. And secondly, the problem of no fire due to the doubling short circuit is solved. And thirdly, the problem of no power consumption when the wire is disconnected into the ground. Fourthly, the problem that the lightning does not damage the electric appliance is solved. And fifthly, the energy-saving and cost-saving problems of electric welding without a welding machine are solved. And sixthly, the problem of high voltage series connection is solved. And seventhly, the power supply switch has a non-contact problem. The main causes and solutions currently responsible for the above problems are as follows:

firstly, the problem of electric shock prevention caused by the electrified line contact is solved.

The national electricity utilization problem now stipulates that the safe voltage is below 24V, and the main reasons for generating the electric shock problem at present are as follows: 1. and electrically climbing the wiring on the cement pole. 2. Live stations are wired on wet ground. 3. And contacting the leakage electric appliance without a grounding wire. 4. An electric appliance having poor insulation is touched with a wet hand. 5. The live wire breaks down on the body. 6. And (5) replacing the bulb when the lamp stands on a wet ground. 7. The tape is non-insulated against the live wire. 8. The child throws the socket with electricity by hand or iron nail. 9. And (5) putting wet clothes on the live wire on a wet ground. 10. Live disconnect repair, etc. … …. The current solution is: 1. the power department publicizes the safety power utilization common knowledge to prevent electric shock. However, there are some accidents that cannot be prevented 2, and an electric shock protector is installed, which has the following disadvantages: (1) in case of touching the wire, people still get an electric shock and then trip, and the hands and the feet can be burnt out. (2.) in case of a heart patient touching live wires, there is still a life risk. (3) When wind blows, the branches touch the wire to trip, and when raining, the insulation degree is reduced and the branches trip, thereby increasing the electrical loss and bringing much trouble to electricians. (4) And the contact is easy to damage and insensitive and is still unsafe when jumping for a certain number of times. (5) And some electricians are damaged and not repaired, and some electricians are afraid of trouble and do not need to detach the electric appliance easily, so that the electric appliance still brings a threat to people and has no sense of safety. (6) When in grounding, the tripping is carried out, and when in short circuit and doubling, the tripping is not carried out, thus being easy to bring serious fire for people.

And secondly, the problem of no fire due to the doubling short circuit is solved.

The current causes the short circuit fire problem to occur because: 1. aging and doubling the lines for a long time. 2. And manually and wrongly connecting and doubling. 3. The thread is thin and has large load, and the thread sheath is melted and doubled. 4. And (5) enabling the conducting wire to be unqualified and doubling. 5. The wire is too close to the fire source and is doubled. 6. The machine or animal bumps the live wires together and the wires are doubled. 7. The mouse bites the thread to be broken and the thread is doubled. 8. The collapsed live wires of trees or buildings are collided together and are doubled. 9. The electrified conducting wire (cable) and chemical materials are put together and oxidized and then are doubled. 10. When the wire is loaded, the wire is wound into a plurality of circles to form vortex to heat and melt and combine the wires. 11. The wire connecting points are loosened and heated to form a parallel wire. 12. Fuse too , line loss doubling, etc. … …. Sometimes the transformer itself catches fire, its main reasons are: A. the knife and porcelain fuse fuses on the switchboard are too thick. B. The burning loss of the contact cannot be separated to cause fire. C. The load is too large. The current method for solving the short circuit fire problem is as follows: 1. a fuse is used. 2. The use of air switches has the disadvantages that: (1) the branch circuit can only be used with loads of dozens of amperes. (2) It cannot be used for a distribution board of a transformer. (3) And manual power transmission is needed after tripping. (4) The contact is easy to damage, jumps for a certain number of times in a long time, is easy to burn, cannot be separated or causes fire. 3. The internal circuit of the original invention patent of the inventor has the defect that after circuit leads are combined, the working procedure of a control circuit is as follows: after the power failure of the circuit short circuit control circuit → the simultaneous discharge of the capacitors → the charge of the capacitors → the power transmission after the charging → the non-fault elimination of the circuit → the power failure → the simultaneous discharge of the capacitors → the charge of the capacitors → the charging after the charging → the power transmission, and the like, until the fault elimination. The disadvantage is that the switch tube will be impacted in such a long time, which has a great influence on the switch tube, and the switch tube will be punctured sometimes, which cannot prevent short circuit.

Thirdly, the problem of no power consumption when the wire is disconnected into the ground is solved:

the current causes the problem of breaking the wire into the ground: 1. the tree or building collapse line breaks into the ground. 2. The strong wind blows the wire into the ground. 3. Mechanical vehicles break the wire into the ground with a wire pole. 4. The long conductor erodes the wire into ground. 5. The mechanical vehicle is loaded too high to hang the wire off the wire into the ground. 6. The short breaks the wire into ground. 7. Lightning breaks the wire into the ground. 8. People take high-rod things to hang off the lead and enter the ground. 9. The mechanical vehicle pulls the temporary cable into the ground. 10. A family mouse bites the wire into the ground, etc. … …. In short, the breaking of the wire into the ground not only consumes current, but also is very dangerous for human touch. The current method for solving the problem of power consumption when the line is disconnected into the ground is as follows: 1. it is a preventive measure only for accidents occurring at any time.

Fourthly, the problem that the lightning does not damage the electric appliance is prevented.

The current reasons that are easy to cause lightning problems are: 1. overhead lines on ponds with the lowest concave terrain are easy to cause lightning impulse. 2. Overhead lines are easy to cause lightning impulse on the top end with the highest topography. 3. The overhead lines under the highest trees are easy to cause lightning surge. 4. The power switch blade installed outdoors without the shell is easy to cause lightning impulse according to the point discharge principle. The current solution to lightning protection is: 1. it is only a preventive measure against accidents caused by rain and snow. 2. And paying attention to the terrain by stringing.

And fifthly, the problem of energy consumption and resource consumption of the electric welding machine is solved.

At present, electric welding machines are purchased at home and abroad and are arranged on 380V and 220V power supplies for welding, so that the power consumption of the electric welding machines is generated, and the cost of purchasing the electric welding machines is wasted by about thousands of dollars.

And sixthly, the problem of high voltage series connection is solved.

The current causes of the problem of generating high voltage series voltage easily are: 1. the high voltage wire breaks down onto the low voltage wire. 2. The high pressure rod falls down or breaks the line and falls off to the low pressure line. 3. The transformer has poor insulation and high voltage is connected in series. 4. The transformer is overloaded to burn out the high voltage series voltage. The current solution to lightning protection is: preventing.

And seventhly, the current distribution box. It is composed of kilowatt-hour meter, voltmeter, current transformer, ammeter, ceramic plug protector, stone knife switch and electric shock protector switch, etc. which constitute the lines of voltage indication, current indication and power supply control. The disadvantage is that the switch only has the function of power supply and power failure, and the switch is provided with sparks when in power supply.

Disclosure of Invention

The invention aims to overcome the defects and the difficult problems of electric shock prevention, short circuit prevention, grounding prevention and lightning protection, and provides a three-phase 380V electric shock prevention, short circuit prevention and energy saving electric appliance with no contact in switch power transmission, no welding machine in electric welding, wire touch prevention and electric shock prevention, short circuit prevention and ignition prevention, wire breakage prevention and grounding prevention, rain prevention and lightning prevention and high voltage prevention and low voltage series connection.

The 380V electric shock and short circuit preventing safe and energy-saving electric appliance is disclosed. Three-phase primary winding LA including safety controller ₁ 、LA ₂ 、LA ₃ And secondary winding LB ₁ 、LB ₂ 、LB ₃ And an electric welding winding LC ₁ 、LC ₂ 、LC ₃ Each corresponding primary and secondary winding, welding winding LA ₁ 、LB ₁ And LC ₁ ；LA ₂ 、LB ₂ 、LC ₂ ；LA ₃ 、LB ₃ And LC ₃ According to the type of the design scheme, the three winding frames are respectively fixedly wound in three framework grooves of certain type shown in the figure 3, so that a primary winding, a secondary winding and an electric welding winding are isolated and insulated from each other; and then, the wound three groups of three-phase primary and secondary windings and the electric welding winding wire coil frameworks are respectively installed on the magnetic columns of a certain shell type high-permeability silicon steel sheet iron core TM (shown in figure 4) according to the type of a design scheme to be coupled. The magnetic coupling structure of the primary winding, the secondary winding and the electric welding winding is adopted.

And three primary windings LA ₁ 、LA ₂ And LA ₃ Is connected to form a primary neutral return line, the neutral return line is connected to an input power indicator DX ₁ 、DX ₂ And DX ₃ One end, input safety socket BX ₄ Is connected with one end of the input safety socket BX ₄ The other end of the first power supply is connected with a neutral return line O of the transformer power supply input; the remaining three primary windings LA ₁ 、LA ₂ And LA ₃ Respectively connected with the input ammeter A ₁ 、A ₂ And A ₃ Is connected with one end of the connecting rod; input ammeter A ₁ 、A ₂ And A ₃ And the other end of the input power indicator DX ₁ 、DX ₂ And DX ₃ And input safety socket BX ₁ 、BX ₂ And BX ₃ And an input voltmeter V ₁ 、V ₂ Are respectively connected; input safety socket BX ₁ 、BX ₂ And BX ₃ The other end of the three-phase voltage source is connected with an input three-phase 380V alternating current power source A, B and a phase C respectively. The above is a three-phase primary input magnetizing circuit.

Seven lightning arresters BL ₁ 、BL ₂ 、BL ₃ 、BL ₄ 、BL ₅ 、BL ₆ And BL ₇ One end of the primary neutral return line is connected with the ground; then three arresters BL ₁ 、BL ₂ And BL ₃ With one end of three primary windings LA ₁ 、LA ₂ And LA ₃ Is connected with the three end points of the head end of the first terminal; three lightning arresters BL ₅ 、BL ₆ And BL ₇ And the other end of the primary winding with three secondary windings LB ₁ 、LB ₂ And LB ₃ Three end points of the head end of (2) are connected; the other end of the surge arrester BL4 is connected to a point on the secondary neutral return line. The method is the circuit grounding connection method of the primary and secondary lightning arresters.

Then three secondary windings LB are connected according to the Beidou seven-star circuit connection method (figure 2) ₁ 、LB ₂ And LB ₃ Three tail ends are connected to form a secondary neutral circuit line, an electric welding winding LC ₁ 、LC ₂ And LC ₃ One end of the serial connection is connected with a secondary neutral return line. The three electric welding windings can also be designed according to the change of the number of turns and the wire diameter of the electric welding windings, so that the three head ends and the three tail ends of the three electric welding windings are connected with the neutral wire in parallel; the other end of the neutral return line is matched with the secondary neutral return line to be output by electric welding. The above is a secondary welding circuit.

The secondary neutral return line passes through three protective tubes E ₁ 、E ₂ 、E ₃ With three bridge rectifiers DT ₁ 、DT ₂ And DT ₃ One end of the AC connector, three output indicator lamps DX ₁₀ 、DX ₁₁ And DX ₁₂ One end of the capacitor, three output 220V spark-reducing nonpolar capacitors CC ₁ 、CC ₂ And CC ₃ One end, secondary output safety socket BX of ₈ After one end of the socket is connected, a secondary output safety socket BX ₈ And the other end of the secondary output neutral return line O. Three secondary windings LB ₁ 、LB ₂ And LB ₃ Three head ends and three bidirectional thyristors CTS ₁ 、CTS ₂ And CTS ₃ One end of (D), three step-down rectifier diodes (D) ₁ 、D ₂ And D ₃ Are respectively connected with one end of the connecting rod; the three-phase secondary coupling induction circuit is formed above.

Three bidirectional thyristor CTS ₁ 、CTS ₂ And CTS ₃ The other end of the three secondary output current meters A are respectively connected with the three secondary output current meters A ₄ 、A ₅ And A ₆ One end of and three secondary short circuit information feedback indicating lamps DX ₇ 、DX ₈ And DX ₉ Is connected to: three step-down rectifier diodes D ₁ 、D ₂ And D ₃ The other end of the three secondary short circuit information feedback indicating lamps DX ₇ 、DX ₈ And DX ₉ The other end of the first and second connecting rods is connected; the above is the secondary output short circuit information feedback circuit. Three secondary output current meters A ₄ 、A ₅ And A ₆ And the other end of the power supply and three power output indicator lamps DX ₁₀ 、DX ₁₁ And DX ₁₂ The other end of the capacitor (CC) and three output 220V spark-reducing nonpolar capacitors (CC) ₁ 、CC ₂ And CC ₃ Another end of the socket and three secondary output safety sockets BX ₅ 、BX ₆ And BX ₇ Are respectively connected; spark-reducing nonpolar capacitor CC with 380V secondary output ₄ Respectively connected with a secondary output ammeter A ₄ And A ₆ Is connected with one end of the connecting rod; spark-reducing nonpolar capacitor CC with 380V output ₅ And a secondary output voltmeter V ₃ Are connected in parallel with a secondary output ammeter A respectively ₄ And A ₅ Is connected with one end of the connecting rod; spark-reducing nonpolar capacitor CC with 380V output ₆ And a secondary output voltmeter V ₄ Are connected in parallel with a secondary output ammeter A respectively ₅ And A ₆ Is connected at one end. And three secondary output safety sockets BX ₅ 、BX ₆ And BX ₇ And the other ends of the three-phase AC power supply are respectively a secondary three-phase 380V AC power supply output end. The above is a contactless switch output circuit.

Power supply triple switch K in secondary rectification voltage stabilizing circuit ₁ One end of the three terminals are respectively connected with the secondary winding LB ₁ 、LB ₂ And LB ₃ Three tap connections of (1); secondary rectifying voltage-stabilized source triple switch K ₁ The other three joints of the three-way rectifier circuit are respectively connected with three bridge rectifier tubes DT in the three-way rectifier voltage stabilizing circuit ₁ 、DT ₂ And DT ₃ Three voltage stabilizing blocks WT ₁ 、WT ₂ And WT ₃ Three paths of six filter capacitors C ₁ 、C ₂ 、 C ₅ 、C ₆ 、C ₉ And C ₁₀ Are connected. The above is a rectification voltage stabilizing circuit.

The three-way rectification voltage-stabilizing circuit is respectively connected with three bulbs DX in the three-way light-operated circuit ₄ 、DX ₅ And DX ₆ Three paths of twelve bias resistors R ₁ 、R ₂ 、R ₃ 、R ₄ 、R ₉ 、R ₁₀ 、R ₁₁ 、R ₁₂ 、R ₁₇ 、R ₁₈ 、 R ₁₉ And R ₂₀ Three-way three-filter electrolytic capacitor C ₃ 、C ₇ And C ₁₁ Three paths of three photoresistors RO ₁ 、RO ₂ And RO ₃ Three-way three-control relay J ₁ 、J ₂ And J ₃ Three routes six control triodes BG ₁ 、BG ₂ 、BG ₅ 、BG ₆ 、BG ₉ And BG ₁₀ Are connected. The above is a light control circuit.

Three control relays J in three-way light-operated circuit ₁ 、J ₂ And J ₃ The closing control point and three paths of twelve biasing resistors R in the delay control circuit ₅ 、R ₆ 、R ₇ 、R ₈ 、R ₁₃ 、R ₁₄ 、R ₁₅ 、R ₁₆ 、R ₂₁ 、 R ₂₂ 、R ₂₃ And R ₂₄ Three paths of three time-delay charging electrolytic capacitors C ₄ 、C ₈ And C ₁₂ Three-way three photoelectric coupler DG ₁ 、DG ₂ And DG ₃ Three-way three-control relay J ₄ 、J ₅ And J ₆ Three paths of three adjustable resistors RP ₁ 、RP ₂ And RP ₃ Three routes six control triodes BG ₃ 、BG ₄ 、BG ₇ 、 BG ₈ 、BG ₁₁ And BG ₁₂ Are connected. The delay control circuit.

Three-way one-triple switch K in three-way time delay control circuit and three-way contactless switch control circuit ₂ Three adjustable resistors RP ₄ 、RP ₅ And RP ₆ Three-way one-way thyristor CTK ₁ 、CTK ₂ And CTK ₃ Three-way three-control relay J ₇ 、J ₈ And J ₉ Normally closed contact of (1), three power resistors RW ₁ 、RW ₂ And RW ₃ And (4) connecting. The above is a contactless switch control circuit.

Three-way contactless switch control circuit one side and three switch tube bidirectional thyristor CTS ₁ 、CTS ₂ And CTS ₃ The control electrode of (2) is connected; three photoresistors RO of one side and three paths of short circuit information feedback ₄ 、RO ₅ And RO ₆ Three-way three-control relay J ₇ 、J ₈ And J ₉ Three step-down rectifier diodes D ₁ 、 D ₂ And D ₃ DX (double-ended) indicator lamp ₇ 、DX ₈ And DX ₉ And (4) connecting. The above is a short circuit information feedback control circuit.

Three-way short-circuit information feedback control circuit, one side of three-way short-circuit information feedback control circuit and three switching tubes bidirectional silicon controlled rectifier CTS ₁ 、 CTS ₂ And CTS ₃ Are connected at both ends. Three-way three-audio voice storage YC in one side and fault voice prompt circuit ₁ 、YC ₂ And YC ₃ And the voice loudspeaker is connected.

Drawings

FIG. 1 is a schematic circuit diagram

FIG. 2 is a schematic diagram of a Beidou satellite connection

FIG. 3 is a winding skeleton diagram

Figure 4 core pattern diagram

FIG. 5 is a schematic diagram of the original circuit

The circuit principle is as follows: see FIG. 1

Principle of electric-to-magnetic conversion

TM in FIG. 1 is a shell core of a three-phase safety controller, which is a three-phase primary winding LA ₁ 、 LA ₂ 、LA ₃ And secondary winding LB ₁ 、LB ₂ 、LB ₃ And an electric welding winding LC ₁ 、LC ₂ 、LC ₃ And (4) coupling. When the three-phase four-wire 380V alternating current power output by the transformer is input to the primary three-phase four-wire input end A, B, C and the O line of the safety controller, the safety controller inputs three pathsAmmeter A ₁ 、A ₂ And A ₃ With current flowing, with current indicating display, voltmeter V ₁ And V ₂ 380V AC voltage indication display, input indicator lamp DX ₁ 、DX ₂ And DX ₃ The input end is electrified normally. At the same time, three-phase AC current flows through DX ₃ Illuminated, here illustrated three way safety patch BX ₁ 、BX ₂ And BX ₃ Three-way ammeter A ₁ 、A ₂ And A ₃ Three-way primary winding LA ₁ 、LA ₂ And LA ₃ Flows in via the three windings and the neutral return line and via the safety plug BX ₄ The input transformer neutral loop line forms a loop to form a primary alternating current electromagnetic conversion circuit, so that three columns of the iron core form a three-phase alternating magnetic field.

Principle of magnetic conversion, electric shock prevention, grounding prevention and high-voltage series low-voltage prevention

Because the wire diameter and the number of turns of the three primary windings are the same, the three-phase secondary winding LB of the safety controller ₁ 、LB ₂ And LB ₃ After the head end of the transformer generates a loop through a neutral return line, the primary electricity is converted into magnetism at the secondary under the mutual inductance action of an alternating magnetic field, and the magnetism is converted into magnetism, so that a three-phase four-wire 380V alternating current power supply which is the same as the input of a primary winding can be induced. Due to the three-phase secondary winding LB ₁ 、LB ₂ And LB ₃ And three-phase primary winding LA ₁ 、LA ₂ And LA ₃ Three-phase four-wire 380V AC power supply A ₁ 、B ₁ And C ₁ Line and neutral Return line O ₁ The power supply output externally belongs to suspended overhead power transmission, and when a person touches any four wires, the four wires and the ground do not form a loop, so that the electric shock casualty accident cannot be caused to the person. Therefore, any wire is safely protected against electric shock when being touched under the condition of electrification. And after any electric wire is disconnected and enters the ground for any reason, no loop is generated, no current is consumed, and the energy can be saved by more than 95% compared with the loss of the original line. And the high-pressure end goes wrong and cannot be connected with the low pressure in series. Thereby solving the problems of electrified wire-touch, electric shock prevention, no wire-break and no groundThe power consumption and the prevention of low voltage series connection of high voltage.

Electric welding principle:

see (fig. 2) the schematic diagram of the Beidou seven-star wiring principle because of the three electric welding windings LC ₁ 、LC ₂ And LC ₃ After being wound on three iron core magnetic columns, the three iron core magnetic columns are connected in series and then connected with a three-phase secondary winding LB ₁ 、LB ₂ And LB ₃ The neutral return lines are connected, namely seven connecting points like the Beidou satellite, so that the neutral return lines are called a Beidou satellite wiring schematic diagram. When three-phase 380V voltage power supply inputs three primary windings LA ₁ 、LA ₂ And LA ₃ After a loop is generated through a neutral return line, three-phase secondary windings LB are simultaneously arranged ₁ 、LB ₂ And LB ₃ An alternating current power supply with 380V of line voltage and 220V of phase voltage, which is the same as the input voltage, of the three-phase four-wire is induced through a neutral return line. While the secondary three electric welding windings LC ₁ 、LC ₂ And LC ₃ 18V alternating current voltage is induced on the three welding windings respectively, and the induced voltage after the three welding windings are connected in series is about 54V. The relation between the connection of the electric welding winding and the three-phase winding and the output voltage is shown as (figure 2), and the voltage 0V of the point O of the neutral return line is taken as the reference at the moment because the alternating voltage is not divided into positive and negative; according to the figure, the voltage above the neutral circuit line is taken as the high alternating voltage, and the point O of the neutral circuit line and the head end A of the three phases ₁ 、B ₁ And C ₁ The phase voltage between each point is a height voltage of 220V; three-phase head end A ₁ 、B ₁ And C ₁ The line voltage between each point is 380V; the voltage below the neutral return line is the deep alternating voltage, and the O point of the neutral return line and the leading-out end D of the welding winding are the deep alternating voltage 54V, so that the welding can be carried out. The advantages are that: 1. when welding, any phase voltage reduction of the secondary three-phase output 380V power supply is not influenced. The original patent of the inventor is that a tap is tapped on a certain phase of a secondary winding of a safety controller to carry out electric welding as shown in figure 5, and the defect is that the voltage of a certain phase is too low when the electric welding is carried out. 2. The 380V and 220V output voltage is stable, and the waveform distortion is small. Because the existing 380V and 220V electric welding machines are connected with 380V of two-phase line voltage or 220V of single-phase line voltage, the voltage drop of the electric welding machines is very low due to large current used during electric welding, even usersThe television cannot be watched. 3. The self-loss of the electric welding machine on a circuit is reduced. 4. The expense for purchasing the welding machine by the user is reduced.

Contactless switch control circuit principle

The working principles of the three-phase three-way contactless switch control circuits are the same. Below with A ₁ The working principle of the method is introduced in the same way as follows: when three-phase 380V voltage power supply inputs three primary windings LA ₁ 、LA ₂ And LA ₃ After a loop is generated through a neutral return line, the three-phase secondary windings LB are simultaneously subjected to magnetizing coupling through a shell type iron core TM ₁ 、LB ₂ And LB ₃ An alternating current power supply with 380V of line voltage and 220V of phase voltage, which is the same as the input voltage, of the three-phase four-wire is induced through a neutral return line. And at A ₁ Phase winding LB ₁ Between the intermediate tap and the neutral loop line, a 14V AC voltage is induced, and the 14V voltage passes through a fuse tube E ₁ 、E ₂ And E ₃ Triple switch K ₁ Rectifying block DT introduced into bridge body ₁ Then, a DC 14V voltage is rectified and passes through a capacitor C ₁ And 7812 type voltage regulator block WT ₁ And C ₂ After pi type filtering, because the capacitor has compensation effect on the circuit, the filter capacitor C ₁ Generates 18V DC voltage through a voltage stabilizing block WT ₁ And via a capacitor C ₂ After filtering, in the capacitor C ₂ The positive terminal of the transformer generates a steady 12V dc voltage. When electrified, the 12V positive terminal passes through R ₁ To the capacitor C ₃ Charging and control tube BG ₁ The capacitor C is out of operation when the bias voltage is lost, and when the designed charging time is about 1 minute ₃ After being fully charged, the control tube BG ₁ At R ₁ 、 R ₂ 、R ₃ The operation is started under the action of the bias resistor. Due to bias resistance R ₄ By BG ₁ Emitter supply control tube BG ₂ The base electrode is biased to conduct but control the tube BG ₂ Or can not be conducted because of the bias resistor R ₄ Parallel photo-resistor RO ₁ The resistance value is too large. When the lamp bulb DX is switched on ₄ When bright, the light dependent resistor RO ₁ When the voltage is changed from dozens of K omega to 0 omega, the control tube BG ₂ The base is biased toIt is turned on, the relay J ₁ Closing, opening the normally closed contact to make the control tube BG ₃ Grounding point of base electrode is disconnected, 12V direct current is through biasing resistance R ₅ Time-delay capacitor C ₄ Charging, about 5 minutes after full charge, at bias resistor R ₅ 、 R ₆ And R ₇ Under the action of (3), control tube BG ₃ Saturated conduction at bias resistor R ₈ And an adjustable resistance RP ₁ Under the action of (3), control tube BG ₄ Saturated conduction, the primary LED in photoelectric coupler is on, the secondary photosensitive tube is on, and the relay J ₄ Closing normally open contact, passing positive electrode through adjustable resistor RP ₄ Triple switch K ₂ Handle one-way silicon controlled rectifier CTK ₁ Trigger electrode of the silicon controlled rectifier (CTR) to trigger the silicon controlled rectifier (CTR) ₁ Conductive unidirectional silicon controlled rectifier CTK ₁ The voltage of the positive pole is 12V through a relay J ₇ Normally closed contact, power resistor RM ₁ Bidirectional thyristor CTS with contactless switch ₁ Trigger pole triggers to make contactless switch bidirectional thyristor CTS ₁ And conducting. At this time A ₁ Phase circuit ammeter is electrified to be conducted and output indicator lamp DX ₁₀ Bright and output voltmeter V ₃ There is a voltage indication. This process solves the problem of contactless switching.

Short circuit prevention working principle:

but when outputting A ₁ When the phase belt electric wire and the output neutral wire are in parallel short circuit, the circuit changes as follows: momentary short circuit → indicator light DX ₁₀ Off → output voltage V ₃ Indicating halving → secondary winding LB ₁ No voltage between the tap and the secondary neutral wire → bridge rectifier DT ₁ No voltage → stabilivolt WT ₁ Output terminal has no voltage → control tube BG ₁ Capacitor C without voltage stop ₃ To R ₂ 、R ₃ Discharging → at the same time the light control circuit bulb DX ₄ Extinguish → photoresistor R0 ₁ Resistance becomes dozens of K omega → control tube BG ₂ No voltage and no bias to stop work → relay J ₁ No-voltage stop → normally closed contact → BG ₃ Base electrode and ground short circuit → control tube BG ₃ Stop work → capacitor C ₄ To R ₆ 、R ₇ Discharge → control tube BG ₄ No bias voltage stop → photocoupler DG ₁ Primary diode extinguishing → secondary photosensitive tube resistance increasing and open circuit → relay J ₄ No attraction, normally open contact disconnection → one-way thyristor CTK ₁ No trigger voltage cut-off → bidirectional thyristor CTS ₁ No trigger voltage disconnection → simultaneous rectification voltage stabilizing circuit recovering to normal C ₃ 、C ₄ Charge start 5 minutes full → neutral return line goes to triac CTS via short circuit point at this time ₁ Output terminal of → bidirectional triode thyristor CTS ₁ There is 220V voltage → current information feedback indicator light DX ₁ Light → photo-resistor RO ₄ Reduced → Relay J ₇ Pull-in → normally closed contact opening → bidirectional thyristor CTS ₁ Trigger electrode power resistor has no voltage → bidirectional thyristor CTS ₁ The shutdown is stopped. Bidirectional thyristor CTS (clear to send) no matter how long the fault is not eliminated ₁ How long the no trigger voltage is not conducting.

After short-circuit fault is eliminated → bidirectional triode thyristor CTS ₁ Voltage loss at both ends → information feedback indicator lamp DX ₁ Extinction → photoresistor RO ₄ Resistance becoming larger → relay J ₇ Open on loss of voltage → close of normally closed contact → triac CTS ₁ Trigger electrode power resistance recovery voltage → bidirectional thyristor CTS ₁ The trigger voltage is applied to turn on → the power supply returns to normal.

The method for solving the short circuit in the original patent of the inventor is (see an original circuit schematic diagram of fig. 5) a pulse cycle process of electrifying → short circuit → power failure → charging → electrifying → short circuit → electrifying → power failure → charging is carried out, and the pulse cycle process is carried out for 5-10 minutes each time until the fault is eliminated, namely the power transmission is normally recovered. The disadvantage is that the switch tube is impacted, heated or damaged for a long time.

The above is the output three-phase power supply A ₁ Phase, B ₁ Phase and C ₁ Live line and neutral return line O of one phase in circuit of phase ₁ Is detected. If A is ₁ And phase B ₁ Phase sum C ₁ Short circuit between phases, working condition and A ₁ Phase and neutral circuit line O ₁ Short circuits are substantially the same, except that A ₁ And phase with O ₁ The voltage is 220V, A ₁ And phase B ₁ Phase sum C ₁ The voltage between the phases is 380V. According to the theory of A ₁ And B ₁ The two-phase short circuit should be powered off at the same time, but because the control circuit is controlled by a single phase, the relation A ₁ And phase B ₁ Relatively neutral return line O ₁ And who voltage decreases first. Compared with A, B two high-speed straight-ahead trucks which are also at the same time, in the same direction and at the same speed and are arranged side by side in the same row, the sudden B car inclines upwards towards the lane of the A car, and due to the close distance of the same row and the same speed and the small contact angle, when the B car is in contact with the A car, the A car can still move forwards at a high speed, and the B car is knocked over by the impulsive force of the A car before high-speed marching and the self-forward inertial force. The same is true in the circuit if holding A ₁ Phase conductor bump B ₁ Phase conductors, short-circuiting them, then A ₁ Phase and neutral circuit line O ₁ The voltage of (A) first drops, so that ₁ And the power is cut off firstly. E.g. by holding the conductor B ₁ Meet A ₁ Phase conductors, short-circuiting them, then B ₁ The phase failure, after many tests, in this circuit, that is, the short circuit time is the key reason why the circuit stops, which is 0.01 second wrong. The working principle after short circuit is the same as the above, and detailed description is omitted. The problem of whether the information feedback indicator lamp is a 220V bulb or not will be burnt is described as follows: when the 380V power lines of the two phases of two lines are in short circuit, the voltage from the short circuit point to the two ends of the bidirectional controllable silicon is 380V, but the voltage is 190V direct current after being rectified by a half-wave rectifier diode; when the 220V power line of the single-phase two-wire is short-circuited, the voltage from the short-circuit point to two ends of the bidirectional controllable silicon is also 220V, but the voltage is rectified to be 110V through a half-wave rectifier diode. The bulb will not burn. The purpose of automatic power failure and power transmission of output short circuit is solved and achieved.

Solution to lightning protection problem

Three-phase primary winding LA of safety controller ₁ 、LA ₂ And LA ₃ And secondary winding LB ₁ 、 LB ₂ And LB ₃ Head end and secondary winding LB ₁ 、LB ₂ And LB ₃ Neutral return line and primary LA ₁ 、 LA ₂ And LA ₃ Neutral return line of the transformer is provided with seven lightning arresters BL ₁ 、BL ₂ 、BL ₃ 、BL ₄ 、BL ₅ 、BL ₆ And BL ₇ And lightning arrester BL ₁ 、BL ₂ 、BL ₃ 、BL ₄ 、BL ₅ 、BL ₆ And BL ₇ Is connected with the primary LA ₁ 、LA ₂ And LA ₃ Neutral return line connection, primary LA ₁ 、LA ₂ And LA ₃ The neutral return line is connected with the neutral return line of the transformer, and the zero line of the transformer is connected with the ground. So that the strong current of lightning strikes the three-phase primary LA of the controller ₁ 、LA ₂ And LA ₃ And secondary winding LB ₁ 、LB ₂ And LB ₃ Head end and secondary winding LB ₁ 、LB ₂ And LB ₃ Any wire of the neutral return line of (2) will pass through seven lightning arresters BL ₁ 、BL ₂ 、BL ₃ 、BL ₄ 、BL ₅ 、BL ₆ And BL ₇ And enters the ground, thereby protecting the electric appliance. Thus, the lightning problem is solved.

Through the analysis of the circuit principle, the invention saves energy and cost and can replace a distribution box; the anti-electric shock and anti-short circuit device can prevent electric shock and short circuit, and can prevent grounding, lightning and high voltage from entering low voltage. The purpose of the invention is achieved.

Detailed Description

The invention takes 50KW 380V electric shock and short circuit prevention safety energy-saving electrical appliance as an example to introduce the embodiment thereof: firstly, a high-permeability silicon steel sheet with more than 18000 gauss is selected and processed and designed into any one of A, B, C, D and E iron core styles according to the practical situation according to the permeability direction (figure 4). The following iron cores have the following advantages and disadvantages: 1. the A-shaped iron core is three magnetic columns, three-phase primary LA ₁ 、LA ₂ And LA ₃ And secondary winding LB ₁ 、LB ₂ And LB ₃ Can be respectively wound and fixed on the three magnetic columns. The magnetic poles on two sides have magnetic leakage, which reduces power. Its advantages are same size of three-phase fixed coil and simple process. 2. The B-shaped iron core is four magnetic columnsThree-phase primary LA ₁ 、LA ₂ And LA ₃ And secondary winding LB ₁ 、LB ₂ And LB ₃ Can be respectively wound and fixed on the six magnetic columns. The disadvantage is that the magnetic leakage on the magnetic columns at the two sides takes a lot of labor. Its advantages are small size of coil, high heat dissipation and small size. 3. The C-shaped iron core is five magnetic columns and three-phase primary LA ₁ 、LA ₂ And LA ₃ And secondary winding LB ₁ 、LB ₂ And LB ₃ Can be respectively wound and fixed on the three magnetic columns in the middle. The disadvantage is that it is labor intensive. Its advantages are no leakage of magnetic field and high magnetic force. 4. D, E sample iron core has the disadvantages of large middle coil and different resistance. The advantage is that the power can be increased.

The coil frame is processed into A, B, C and D-type frame 3 sleeve by using an insulating plate according to the condition (as shown in figure 3), and the frame has the following methods: 1. three sets of A-type frameworks are used, one set is used for forming primary winding LA ₁ Secondary winding LB ₁ Respectively winding two upper-side-groove internal welding windings LC ₁ Winding the lower side of the coil in a small groove; the other two sets also respectively connect the primary windings LA ₂ And LA ₃ And secondary winding LB ₂ And LB ₃ Respectively winding two upper-edge in-slot welding windings LC ₂ And LC ₃ A small groove is arranged at the lower side of the winding. 2. When B-type skeletons and C-type skeletons are used, three sets of B-type skeletons are respectively used for winding three-phase primary windings and three-phase secondary windings, and three sets of C-type skeletons are respectively used for winding three electric welding windings. 3. When the C-shaped framework is used, nine sets of C-shaped frameworks are respectively used, nine three-phase primary windings, nine three-phase secondary windings and nine three-phase electric welding windings are respectively wound on one set of framework. The electric welding framework is smaller. 4. When the D-shaped frameworks are used, three sets of frameworks are respectively used for winding a three-phase primary winding and a three-phase secondary winding, and an insulator is additionally arranged after the three-phase primary winding and the three-phase secondary winding are wound. 5. Or directly adding the insulator on the magnetic pole, firstly winding the primary or secondary winding, then adding the insulator, then winding the primary or secondary winding, and finally adding the insulator, namely winding the winding of the winding welding machine. This approach has two disadvantages: 1. the primary and secondary windings have different resistances. 2. The inner winding does not dissipate heat well.

The implementation adopts an A-shaped iron core and an A-shaped framework. Using 35-40 mm ² The oxide film flat aluminum wire (or 25-30 mm) ² Insulated copper wire) to form a three-phase primary winding LA ₁ 、LA ₂ And LA ₃ Winding 110 turns in each first groove on the processed A-shaped framework; because of magnetic loss, the secondary winding is wound by 3-5 turns in general, and the secondary winding LB ₁ 、LB ₂ And LB ₃ The second groove on the processed A-shaped framework is wound with 115 turns respectively, and taps are arranged at 0-7 turns; three electric welding windings LC ₁ 、LC ₂ And LC ₃ By 70mm ² The third slot of the insulated copper wire is wound by 9 turns on the processed A-shaped framework. Pouring insulating paint, drying, and then fixing and drying by using epoxy resin. The shell core is mounted on the skeleton of the wound three coils. The primary winding LA is connected according to the wiring diagram ₁ 、LA ₂ And LA ₃ And secondary winding LB ₁ 、LB ₂ And LB ₃ The neutral return line joint of (2) is connected well. Three electric welding windings LC ₁ 、LC ₂ And LC ₃ Is connected in series with the neutral return line.

Three bidirectional thyristors with the withstand voltage of 1000V and the current of more than 300A are selected, an upper radiator is arranged and fixed on an insulating plate, and the three ampere meters, the two voltmeters, the six spark-reducing nonpolar capacitors, the three output power indicator lamps and the four safety sockets are arranged on a circuit board, and are connected with joints according to a circuit diagram; according to the circuit schematic diagram, three-phase three-way rectification voltage stabilizing circuit and control circuit electronic components are installed on a circuit board, 6 heads of the input end of the circuit board are respectively connected with taps of three secondary windings and a neutral wire, and three heads of an output end of a unidirectional silicon controlled rectifier are respectively connected with three information feedback circuit relay J ₁ 、J ₈ And J ₉ The normally-connected contact of the power trigger resistor is connected with the power trigger resistor to trigger the bidirectional thyristor. The information feedback circuit and the fault voice prompt circuit are arranged on a circuit board, two connectors are connected with a 12V direct current power supply, and two connectors are connected with two ends of the bidirectional controllable silicon. 7 lightning arresters are installed on a circuit board and connected according to a circuit diagram. And finally, connecting an input voltmeter, an indicator light, an ammeter according to a circuit diagram, and then, installing the voltmeter, the indicator light and the ammeter on the processed shell. All parts are connected according to a schematic diagram. The four wiring connectors at the input end and the four wiring connectors at the output end are connected with the lead-out wiring of the electric weldingHeads connected to 25mm respectively ² On the copper posts of (1).

After the installation is completed, carefully checking whether the circuit diagram is wrong or not.

And measuring the ground insulation and the interphase insulation of the output end by using a megohmmeter, wherein the insulation resistance is over 100 megohmmeters.

A three-phase 380V alternating current power supply test is connected, whether the output voltmeter indicates that the voltage is normally 380V or not is checked, if the output end voltage is low, the adjustable resistance of each phase trigger electrode can be debugged, and the ideal output voltage is achieved.

And (3) electric shock prevention experiment: the current meter measures the current to ground of each phase to be zero. The voltage to ground is measured by a voltmeter to be zero. Then try to feel safe with the hand.

The trigger of the debugging controllable silicon is normally conducted, the delay circuit of the control circuit is used for 1 minute, and the delay circuit is used for 5 to 10 minutes.

For short-circuit test, first, A ₁ 、B ₁ And C ₁ Three-phase and neutral circuit line short circuit test and then A ₁ And B ₁ Phase, C ₁ And A ₁ Phase, B ₁ And C ₁ In the phase short-circuit test, the short-circuit power-off time is about 0.1 second.

And carrying out electric welding experiments by using a plurality of welding holders simultaneously.

And (3) power test measurement: the test was carried out for 8 hours with full power load. Finally, various design criteria are achieved.

After the electric appliance is tested, installed and molded, the electric appliance can be installed beside a transformer table, the input end of the electric appliance is connected with the secondary output end of the transformer, and the output end of the electric appliance is connected with a user power supply bus circuit. Replacing the distribution box. And the device can also be arranged in factories, mines, workshops and the like to produce 10KW, 20KW, 30KW, 50KW, 100KW, 200KW, 500KW, 1000KW and other series products.

The utility model has the following characteristics:

1. no matter 380V power electricity or 220V lighting electricity, people can not get an electric shock safely when being charged by accident and touching any line, and the effect of preventing the electric shock is achieved.

2. No matter in natural disasters, three live wires and one zero wire are manually pressed and connected in parallel, fire cannot be caused due to short circuit, and no matter how long the fault occurs, the short circuit prevention effect is achieved after 5 minutes of power transmission after the fault is eliminated.

3. The line is grounded without current loss, thereby playing the role of energy saving.

4. Prevent high pressure from entering low pressure.

5. The lightning protection circuit device is arranged in the lightning protection device, and the lightning protection effect is achieved.

6. The electric appliance outputs three live wires, one zero line and one welding wire, and the circuit can be directly electrically welded, so that the cost for purchasing a plurality of electric welding machines and the self electric loss of the plurality of electric welding machines are saved.

7. The transformer can replace a distribution box on the transformer, and the cost of the distribution box is saved.

The invention solves the problems of safety of line contact in live line, no fire in short circuit and parallel connection, no loss of broken line and ground, no welding machine for electric welding, no damage to electric appliances caused by thunder and lightning and no contact of switch, eliminates the hidden safety hazard in people, cures the tigers feared by people, solves the problem of safety in electricity utilization, fills the blank of the world, is a revolution in the history of electricity utilization, is equal to an invisible personal and property double insurance for people, and is an ideal safe and energy-saving electric appliance project.

Claims

1. The 380V electric shock and short circuit preventing safe energy-saving electric appliance can be directly matched with a transformer, can also be independently installed and used in factories and workshops, can realize the contactless electric transmission switch, the electric welding free machine, the electrified line contact electric shock prevention, the short circuit parallel connection ignition prevention, the line break-in and ground leakage prevention and the thunder and lightning line impact inflow, comprises a primary winding, a secondary winding, an electric welding winding, a Beidou seven-star wiring method, a winding framework pattern and a coupling iron core pattern of a three-phase safety controller, and is characterized in that a three-phase primary winding LA ₁ Head end of (A) through an ammeter (A) ₁ After being connected in series, the input indicator lamp DX ₁ One end of (2) and safety socket BX ₁ Are connected at one end, a three-phase primary winding LA ₂ Head end of (A) through an ammeter (A) ₂ DX (DX) connected in series and input indicator lamp ₂ One end of (2) and safety socket BX ₂ Are connected at one end, a three-phase primary winding LA ₃ Head end of (A) through ammeter A ₃ After being connected in series withInput indicator light DX ₃ One end of (2) and safety socket BX ₃ One end of the two ends are connected; voltmeter V ₁ One end of (A) and an ammeter (A) ₁ And safety socket BX ₁ Is connected with the other end of the connection point of the ammeter A ₂ And safety socket BX ₂ Is connected with the connection point of the voltmeter V2, and one end of the voltmeter V2 is connected with the ammeter A ₂ And safety socket BX ₂ Is connected with the other end of the connecting point of the current meter A ₃ And safety socket BX ₃ The connection point of (a); safety socket BX ₁ 、BX ₂ And BX ₃ The other end of the transformer is respectively connected with A, B output by the transformer and a C three-phase 380V alternating current power supply; three-phase primary winding LA ₁ 、LA ₂ And LA ₃ After three tail ends of the input indicator light DX are connected into a neutral return line ₁ 、DX ₂ And DX ₃ Another end of (2) and a safety socket BX ₄ Is connected with one end of a safety socket BX ₄ The other end of the transformer is connected with a neutral return line of the transformer and the ground; lightning arrester BL ₁ 、BL ₂ 、BL ₃ 、BL ₄ 、BL ₅ 、BL ₆ And BL ₇ Are connected to the primary winding LA ₁ 、LA ₂ And LA ₃ Is connected to the neutral return line; lightning arrester BL ₁ The other end and the primary winding LA ₁ End-point connection of head-end, lightning arrester BL ₂ The other end and the primary winding LA ₂ End-point connection of head-end, lightning arrester BL ₃ The other end and the primary winding LA ₃ The end point connection of the head end; lightning arrester BL ₅ The other end and the secondary winding LB ₁ End connection of head end, lightning arrester BL ₆ The other end and the secondary winding LB ₂ End-point connection of head-end, lightning arrester BL ₇ The other end and the secondary winding LB ₃ The end point of the head end is connected; safety controller three-phase secondary winding LB ₁ 、LB ₂ And LB ₃ Three tail ends of the three lead-out neutral return lines are connected and then lead out of a neutral return line and a lightning arrester BL ₄ Is connected with a secondary output indicator light DX ₁₀ And DX ₁₁ And DX ₁₂ 220V spark-reducing nonpolar capacitor CC ₁ 、CC ₂ And CC ₃ And safety socket BX ₈ ToAre connected with each other; neutral return line and fuse E ₁ Is connected to one end of a fuse tube E ₁ The other end of the rectifier tube DT with the bridge body ₁ One end of the AC input terminal is connected with the secondary winding LB ₁ Center tap and triple switch K ₁ The input end of the three-way switch K is connected with the first end of the three-way switch ₁ First end of outlet end and bridge rectifier DT ₁ The other end of the AC input end is connected with a bridge rectifier DT ₁ Positive terminal and voltage stabilizing module WT ₁ Input terminal and filter capacitor C ₁ Is connected with the positive terminal of the voltage stabilizing module WT ₁ Output end and filter capacitor C ₂ Is connected with the positive terminal of the filter capacitor C ₁ Negative terminal and voltage stabilizing module WT ₁ Negative terminal and filter capacitor C ₂ Negative terminal and bridge rectifier DT ₁ The negative electrode output end is connected to form a first path of rectification voltage stabilizing circuit output; neutral return line and fuse E ₂ Is connected to one end of a fuse tube E ₂ The other end of the rectifier tube DT with the bridge body ₂ One end of the AC input terminal is connected with the secondary winding LB ₂ Center tap and triple switch K ₁ The second end of the input end is connected with a triple switch K ₁ Second end of the output end and a bridge rectifier DT ₂ The other end of the AC input end is connected with a bridge rectifier DT ₁ And a voltage stabilizing module WT ₂ Input terminal and filter capacitor C ₅ Is connected with the positive terminal of the voltage stabilizing module WT ₂ Output end and filter capacitor C ₆ Is connected with the positive terminal of the filter capacitor C ₅ Negative terminal and voltage stabilizing module WT ₂ Negative terminal and filter capacitor C ₆ The negative electrode end is connected with the bridge rectifier DT ₂ The negative electrode output end is connected to form a second path of rectification voltage stabilizing circuit output; neutral return line and fuse E ₃ Is connected to one end of a fuse tube E ₃ The other end of the rectifier tube DT with the bridge body ₃ One end of the AC input terminal is connected with the secondary winding LB ₃ Center tap and triple switch K ₁ The input end of the three-way switch K is connected with the third end of the three-way switch ₁ Third end of the output end and a bridge rectifier DT ₃ The other end of the AC input end is connected with a bridge rectifier DT ₃ Positive output terminal and voltage stabilizing module WT ₃ Input terminalAnd a filter capacitor C ₉ Is connected with the positive terminal of the voltage stabilizing module WT ₃ Output end and filter capacitor C ₁₀ Is connected with the positive terminal of the filter capacitor C ₉ Negative terminal and voltage stabilizing module WT ₃ Negative terminal and filter capacitor C ₁₀ The negative electrode end is connected with the bridge rectifier DT ₃ The negative electrode output end is connected to form a third path of rectification voltage stabilizing circuit output; the neutral return line is finally connected with three electric welding windings LC after series connection ₁ 、LC ₂ And LC ₃ After one end of the three electric welding windings LC are connected, the three electric welding windings LC are matched and connected in series ₁ 、LC ₂ And LC ₃ The lead-out wire at the other end D is an electric welding output circuit; voltage stabilization module WT ₁ The positive terminal of the output terminal and the bias resistor R ₁ And a control transistor BG ₁ Collector of (3), lamp bulb DX ₄ And a control relay J ₁ One end of the internal coil is connected to control the relay J ₁ The other end of the internal coil and the control triode BG ₂ Is connected to the collector of the bias resistor R ₁ Another end of (1) and a control triode BG ₁ Base electrode of (1), filtering electrolytic capacitor C ₃ Positive terminal and bias resistor R ₂ Is connected with one end of the control triode BG ₁ Emitter and bias resistor R of ₃ One terminal of (1), a bias resistor R ₄ And a photo resistor RO ₁ Is connected to one end of a bias resistor R ₄ And a photo resistor RO ₁ The other end of the transistor (BG) and a control triode ₂ Is connected to the base of the bias resistor R ₃ And a bias resistor R ₄ The other end of the filter electrolytic capacitor C ₃ Negative terminal of (3) and lamp bulb DX ₄ The other end of the control transistor BG ₂ Emitter and control relay J ₁ Central movable contact and voltage stabilizing module WT ₁ The positive end of the output end is connected to form a photoelectric control circuit; bias resistor R ₅ And a control transistor BG ₃ Collector electrode of (3), photoelectric coupler DG ₁ One end of the inner light emitting diode and the photoelectric coupler DG ₁ One end of the inner coupling tube and the controllable adjustable resistor RP ₁ And a voltage stabilizing module WT ₁ The positive terminal of the output terminal is connected with a bias resistor R ₅ And the other end of (2) and a bias resistor R ₆ One end of (1), relay J ₁ Fixed contact and time-delay electrolytic capacitor C ₄ Positive terminal and control triode BG ₃ Is connected with the base electrode to control the triode BG ₃ Emitter and bias resistor R of ₇ And a bias resistor R ₈ Is connected to one end of a bias resistor R ₈ The other end of the control triode BG ₄ Base electrode of the transistor is connected to control the triode BG ₄ Collector and photoelectric coupler DG ₁ The other end of the inner LED is connected with a photoelectric coupler DG ₁ The other end of the inner coupling tube and the relay J ₄ One end of the internal coil is connected to control the adjustable resistor RP ₁ The other end of the relay and a relay J ₄ Is connected to the intermediate movable contact of, biasing the resistor R ₆ Another terminal of (2) and time-delay electrolytic capacitor C ₄ The negative terminal of (3), the bias resistor R ₇ Another end of (B) and a control triode BG ₄ Emitter electrode of (2) and relay J ₄ The other end of the inner coil and the voltage stabilizing module WT ₁ The negative end of the output end is connected to form a delay control circuit; relay J ₄ Fixed contact and triple switch K ₂ The first path of the input end of the three-way switch K is connected ₂ The first path of output end and the unidirectional silicon controlled rectifier CTK ₁ Control electrode of (1) is connected with unidirectional silicon controlled rectifier (CTK) ₁ Anode and photoresistor RO ₄ And a voltage stabilizing module WT ₁ The positive terminal of the output end is connected with the photosensitive resistor RO ₄ Another end of (1) and a relay J ₇ One end of the internal coil is connected with a unidirectional thyristor CTK ₁ Cathode and relay J ₇ Intermediate movable contact connection of, relay J ₇ With fixed contact and power resistor RW ₁ Is connected to a power resistor RW ₁ The other end of the switch tube and the contactless switch tube bidirectional thyristor CTS ₁ Is connected with a control electrode of a bidirectional thyristor CTS ₁ Anode and step-down rectifier diode D ₁ Positive electrode and lightning arrester BL ₅ And the other end of the secondary winding and LB of the secondary winding ₁ The head ends are connected to form a switch contactless control circuit; buck rectifier diode D ₁ Another end of (1) and an information indicator lamp DX ₇ Is connected at one end toInformation indicator lamp DX ₇ The other end of the (D) and the bidirectional thyristor CTS ₁ Cathode and ammeter A ₄ Is connected to a relay J ₇ The other end of the inner coil and the voltage stabilizing module WT ₁ The negative ends of the output ends are connected to form a short-circuit information feedback circuit; storage YC ₁ Positive terminal and photo resistor RO ₄ Another end of (1) and a relay J ₇ Is connected at one end to an internal coil, an audio memory YC ₁ And a voltage stabilizing module WT ₁ Negative terminal connection of output terminal, audio storage YC ₁ The two ends of the audio output are respectively connected with the horn YS ₁ The two led-out input lines are connected to form a fault voice prompt circuit; voltage stabilization module WT ₂ The positive terminal of the output terminal and the bias resistor R ₉ And a control transistor BG ₅ Collector of (3), lamp bulb DX ₅ And a control relay J ₂ One end of the internal coil is connected to control the relay J ₂ The other end of the internal coil and a control triode BG ₆ Is connected to the collector of, a bias resistor R ₉ Another end of (1) and a control triode BG ₅ Base electrode of (2), filter electrolytic capacitor C ₇ Positive terminal and bias resistor R ₁₀ Is connected with one end of the control triode BG ₅ Emitter and bias resistor R of ₁₁ One terminal of (1), a bias resistor R ₁₂ And a photo resistor RO ₂ Is connected to a bias resistor R ₁₂ And a photo resistor RO ₂ The other end of the transistor (BG) and a control triode ₆ Is connected to the base of the bias resistor R ₁₁ And a bias resistor R ₁₂ The other end of the filter electrolytic capacitor C ₇ Negative terminal of (3) and lamp bulb DX ₅ The other end of the control triode BG ₆ Emitter and control relay J ₂ Central movable contact and voltage stabilizing module WT ₂ The negative end of the output end is connected to form a photoelectric control circuit; bias resistor R ₁₃ And a control transistor BG ₇ Collector electrode of, and photoelectric coupler DG ₂ One end of the inner light emitting diode and the photoelectric coupler DG ₂ One end of the inner coupling tube and the controllable adjustable resistor RP ₂ And a voltage stabilizing module WT ₂ The positive terminal of the output terminal is connected with a bias resistor R ₁₃ And the other end of the bias resistor R ₁₄ One end of (1), relay J ₂ Fixed contact and time-delay electrolytic capacitor C ₈ Positive terminal and control triode BG ₇ Is connected with the base electrode of the control triode BG ₇ Emitter and bias resistor R of ₁₅ And a bias resistor R ₁₆ Is connected to one end of a bias resistor R ₁₆ The other end of the transistor (BG) and a control triode ₈ Base electrode of the transistor is connected to control the triode BG ₈ Collector electrode of and photoelectric coupler DG ₂ The other end of the inner LED is connected with a photoelectric coupler DG ₂ The other end of the inner coupling tube and the relay J ₅ One end of the internal coil is connected to control the adjustable resistor RP ₂ The other end of the relay and a relay J ₅ Is connected to the intermediate movable contact, biasing resistor R ₁₄ Another terminal of (2) and time-delay electrolytic capacitor C ₈ The negative terminal of (3), the bias resistor R ₁₅ Another end of (1) and a control triode BG ₈ Emitter and relay J ₅ The other end of the inner coil and the voltage stabilizing module WT ₂ The negative end of the output end is connected to form a delay control circuit; relay J ₅ Fixed contact and triple switch _K2 The second path of input end of the three-way switch K is connected ₂ Second output end and unidirectional silicon controlled rectifier CTK ₂ Control electrode of (2) is connected with unidirectional thyristor (CTK) ₂ Anode and photoresistor RO ₅ And a voltage stabilizing module WT ₂ The positive terminal of the output end is connected with a photosensitive resistor RO ₅ Another end of (1) and a relay J ₈ One end of the internal coil is connected with a unidirectional thyristor CTK ₂ Cathode and relay J ₈ Intermediate movable contact connection of, relay J ₈ With fixed contact and power resistor RW ₂ Is connected to a power resistor RW ₂ The other end of the switch tube and a contactless switch tube bidirectional thyristor CTS ₂ Is connected with a control electrode of a bidirectional thyristor CTS ₂ Anode of (2) and step-down rectifier diode D ₂ Positive electrode and lightning arrester BL ₆ And the other end of the secondary winding and LB of the secondary winding ₂ The head ends are connected to form a switch contactless control circuit; buck rectifier diode D ₂ Another end of (1) and an information indicator lamp DX ₈ Is connected with an information indicator lamp DX ₈ The other end of the (D) and the bidirectional thyristor CTS ₂ Cathode and ammeter A ₅ Is connected to a relay J ₈ The other end of the inner coil and the voltage stabilizing module WT ₂ The negative ends of the output ends are connected to form a short-circuit information feedback circuit; storage YC ₂ Positive terminal and photo resistor RO ₅ Another end of (1) and a relay J ₈ One end of the internal coil is connected to an audio memory YC ₂ Negative electrode and voltage stabilizing module WT ₂ Negative terminal connection of output terminal, audio storage YC ₂ The two ends of the audio output are respectively connected with the horn YS ₁ The two led-out input lines are connected to form a fault voice prompt circuit; voltage stabilization module WT ₃ The positive terminal of the output terminal and the bias resistor R ₁₇ And a control transistor BG ₉ Collector of (3), lamp bulb DX ₆ And a control relay J ₃ One end of the internal coil is connected to control the relay J ₃ The other end of the internal coil and the control triode BG ₁₀ Is connected to the collector of the bias resistor R ₁₇ Another end of (1) and a control triode BG ₉ Base electrode of (1), filtering electrolytic capacitor C ₁₁ Positive terminal and bias resistor R ₁₈ Is connected with one end of the control triode BG ₉ Emitter and bias resistor R of ₁₈ One terminal of (2), a bias resistor R ₄ And a photo resistor RO ₁ Is connected to one end of a bias resistor R ₂₀ And a photo-resistor RO ₃ The other end of the transistor (BG) and a control triode ₁₀ Is connected to the base of the bias resistor R ₁₉ And a bias resistor R ₄ The other end of the filter electrolytic capacitor C ₁₁ Negative terminal of (3) and lamp bulb DX ₆ The other end of the control triode BG ₁₀ Emitter and control relay J ₃ Central movable contact and voltage stabilizing module WT ₃ The positive ends of the output ends are connected to form a photoelectric control circuit; bias resistor R ₂₁ And a control transistor BG ₁₁ Collector electrode of (3), photoelectric coupler DG ₃ One end of the inner light emitting diode and the photoelectric coupler DG ₃ One end of the inner coupling tube and the control is adjustableResistance RP ₃ And a voltage stabilizing module WT ₃ The positive terminal of the output terminal is connected with a bias resistor R ₂₁ And the other end of the bias resistor R ₂₂ One end of (1), relay J ₃ Fixed contact and time-delay electrolytic capacitor C ₁₂ Positive terminal and control triode BG ₁₁ Is connected with the base electrode to control the triode BG ₁₁ Emitter and bias resistor R of ₂₃ And a bias resistor R ₂₄ Is connected to a bias resistor R ₂₄ The other end of the transistor (BG) and a control triode ₁₂ Base electrode of the transistor is connected to control the triode BG ₁₂ Collector electrode of and photoelectric coupler DG ₃ The other end of the inner LED is connected with a photoelectric coupler DG ₃ The other end of the inner coupling tube and the relay J ₆ One end of the internal coil is connected to control the adjustable resistor RP ₃ The other end of the relay and a relay J ₆ Is connected to the intermediate movable contact, biasing resistor R ₂₂ And a time-delay electrolytic capacitor C ₁₂ Negative terminal of (2), bias resistor R ₂₃ Another end of (B) and a control triode BG ₁₂ Emitter and relay J ₆ The other end of the inner coil and the voltage stabilizing module WT ₃ The negative end of the output end is connected to form a delay control circuit; relay J ₆ Fixed contact and triple switch K ₂ The third path input end of the three-way switch K is connected ₂ Third path output end and unidirectional silicon controlled rectifier CTK ₃ Control electrode of (1) is connected with unidirectional silicon controlled rectifier (CTK) ₃ Anode and photoresistor RO ₆ And a voltage stabilizing module WT ₃ The positive terminal of the output end is connected with a photosensitive resistor RO ₆ Another end of (1) and a relay J ₉ One end of the internal coil is connected with a unidirectional thyristor CTK ₃ Cathode and relay J ₉ Intermediate movable contact connection of, relay J ₉ With fixed contact and power resistor RW ₃ Is connected to a power resistor RW ₃ The other end of the bidirectional thyristor CTS ₃ Control electrode of (2) is connected with bidirectional thyristor CTS ₃ Anode and step-down rectifier diode D ₃ Positive electrode and lightning arrester BL ₇ And the other end of the secondary winding and LB of the secondary winding ₃ The head ends are connected to form a switchTurning off the contactless control circuit; buck rectifier diode D ₃ Another end of (1) and an information indicator lamp DX ₉ Is connected with an information indicator light DX ₉ The other end of the (D) and the bidirectional thyristor CTS ₃ Cathode and ammeter A ₆ Is connected to a relay J ₉ The other end of the inner coil and the voltage stabilizing module WT ₃ The negative ends of the output ends are connected to form a short-circuit information feedback circuit; storage YC ₃ Positive terminal and photo resistor RO ₆ The other end of the relay and a relay J ₉ One end of the internal coil is connected to an audio memory YC ₃ Negative electrode and voltage stabilizing module WT ₃ Negative terminal connection of output terminal, audio memory YC ₃ The two ends of the audio output are respectively connected with the horn YS ₁ The two led-out input lines are connected to form a fault voice prompt circuit; safety socket BX ₈ The other end of the first power supply is used as a welding wire and a secondary neutral return line for output; output current meter A ₄ The other end of the capacitor (CC) and a 220V spark-reducing nonpolar capacitor (CC) ₁ And an output indicator light DX ₁₀ The other end of the voltage meter, 380V spark-reducing nonpolar capacitors CC4 and CC5, an output voltmeter V3 and an output safety socket BX ₅ After one end of the socket is connected, a safety socket BX is output ₅ The other end of which serves as a secondary winding LB ₁ The head end of (2) outputs; output current meter A ₅ The other end of the capacitor (C) and a 220V spark-reducing nonpolar capacitor (CC) ₂ And an output indicator light DX ₁₁ Another end of (1) and CC ₅ And an output voltmeter V ₃ Another end of (C), CC ₆ Output voltmeter V ₄ And output safety socket BX ₆ After one end of the socket is connected, a safety socket BX is output ₆ The other end of which serves as a secondary winding LB ₂ The head end of the output; output current meter A ₆ The other end of the capacitor (CC) and a 220V spark-reducing nonpolar capacitor (CC) ₃ And output indicator light DX ₁ And CC ₄₂ Another end of (1) and CC ₆ And an output voltmeter V ₄ Another end of (2) and output safety socket BX ₇ After one end of the socket is connected, a safety socket BX is output ₇ The other end of which serves as a secondary winding LB ₃ Is output at the head end of the network.

2. The 380V electric shock protection short circuit protection safety energy saving electrical appliance according to claim 1, wherein the coupling core style of the safety controller comprises: three magnetic columns, four magnetic columns, or five magnetic columns.

3. The 380V electric shock protection and short circuit protection safety energy saving electrical appliance according to claim 1, wherein the number of turns of the three-phase primary and secondary windings and the section of the wire of the safety controller are the same; the secondary winding is wound for 3 to 5 turns for supplementing magnetic loss; the three-phase primary and secondary windings are respectively fixed on the iron core magnetic column, so that the primary and secondary windings are mutually insulated from the phase, the shell and the ground; the coil frame can be processed into four types by an insulating plate.

4. The 380V electrical shock and short circuit resistant safety energy saving electrical appliance according to claim 1, wherein three primary windings LA of the safety controller ₁ 、LA ₂ And LA ₃ And three secondary windings LB ₁ 、LB ₂ And LB ₃ Three head ends or tail ends of the three are connected together to form a neutral loop line of each; the neutral return line of the primary winding is connected with the neutral return line of the transformer, and belongs to a grounding state; the neutral circuit line of the secondary winding is not grounded, belongs to an insulation state with the ground, is not related to the mutual insulation among the primary winding, the iron core and the ground, and belongs to the suspension power transmission; therefore, the electric shock of the touch wire is prevented, and the grounding electric loss is also prevented; the electric welding line is formed by connecting one end of three secondary electric welding windings in series with a neutral return line of the secondary winding according to a Beidou seven-star wiring method; according to the change design of the number of turns and the wire diameter of the electric welding windings, the three electric welding windings can also be connected in parallel, and one end of the three electric welding windings after being connected in parallel is connected with a neutral return line of the secondary winding; the other end of the secondary winding is matched with a neutral return line of the secondary winding to be used as an electric welding output.

5. The 380V electric shock prevention short circuit prevention safe energy-saving electric appliance according to claim 1, characterized in that a 380V three-phase four-wire AC power supply output power transmission mode of a secondary output; the floating power transmission is realized, a neutral return line is not grounded, and when a person touches any power line of four lines, no return circuit is generated between the power line and the ground, so that the electric shock prevention effect is realized.

6. The 380V electric shock protection short circuit prevention safe energy-saving electric appliance according to claim 1, wherein after short circuit, the three-phase three-way contactless switch control circuit is turned off by three photoelectric couplers (DG) in three-way three-delay control circuit ₁ 、DG ₂ And DG ₃ Relay J in isolation control circuit ₄ 、J ₅ And J ₆ Three low-power unidirectional silicon controlled rectifiers CTK in contact breaking contactless switch control circuit ₁ 、CTK ₂ And CTK ₃ The trigger voltage of the three high-power bidirectional thyristors CTS is controlled ₁ 、CTS ₂ And CTS ₃ Trigger voltage of three high-power bidirectional thyristors CTS ₁ 、CTS ₂ And CTS ₃ Off when the trigger voltage is lost; and subsequent information feedback indicator light DX ₇ 、DX ₈ And DX ₉ Photoresistor RO in bright and three short circuit information feedback circuit ₄ 、RO ₅ And RO ₆ Conduction forcing relay J ₇ 、J ₈ And J ₉ The normally closed contact of the pull-in disconnection is cut through three power resistors RW ₁ 、RW ₂ And RW ₃ Supply three high-power bidirectional thyristors CTS ₁ 、CTS ₂ And CTS ₃ To turn it off; the turn-off time of the three-way delay control circuit is determined by three paths of three delay capacitors C ₄ 、C ₈ And C ₁₂ The charging time of the three paths of six control triodes BG is respectively controlled ₃ 、BG ₇ 、BG ₁₁ 、BG ₄ 、BG ₈ And BG ₁₂ The bias voltage of the power supply stops working, and the delay control circuit finishes power transmission; the three paths of three time delay control circuits are formed by three paths of three control relays J in the photoelectric control circuit ₁ 、J ₂ And J ₃ The contact is grounded to control the bias voltage to be completed; relay J ₁ 、J ₂ And J ₃ Three light-operated bulbs DX ₄ 、DX ₅ And DX ₆ To control three paths of three light-sensitive electrodesBlocking RO ₁ 、RO ₂ And RO ₃ Big and small stop control tube BG ₂ 、BG ₆ And BG ₁₀ Biased; the 12V working voltage of the above three control circuits is controlled by three bridge rectifier DT ₁ 、DT ₂ And DT ₃ Three voltage regulator tubes WT ₁ 、WT ₂ And WT ₃ Six filter capacitors C ₁ 、C ₅ 、C ₉ 、C ₂ 、C ₆ And C ₁₀ The filter is supplied by forming a pi-type filter voltage stabilizing circuit; the AC 12V voltage in the three-way voltage-stabilizing circuit is formed by a three-way secondary winding LB ₁ 、LB ₂ And LB ₃ The provision of a tap and neutral return line; and three secondary windings LB ₁ 、LB ₂ And LB ₃ The output three-phase four-wire 380V, 220V, 54V and 12V voltage is generated by a three-way primary winding LA ₁ 、LA ₂ And LA ₃ The magnetizing circuits are provided by mutual induction through iron core coupling; three-way primary winding LA ₁ 、LA ₂ And LA ₃ The 380V alternating voltage is provided by a power transformer; the short-circuit fault voice prompt circuit consists of three paths of three audio frequency storages YC ₁ 、YC ₂ And YC ₃ And a loudspeaker YS ₁ The working voltage is completed by a photoresistor RO in three short-circuit information feedback circuits ₄ 、RO ₅ And RO ₆ Provided after the short circuit.

7. The 380V electric shock and short circuit preventing safe and energy-saving electrical appliance according to claim 1, wherein a capacitor C in the short circuit control circuit is delayed for 5 minutes ₄ 、C ₈ And C ₁₂ The power transmission task after full charge and fault removal is that three paths of three step-down rectifier diodes D are used ₁ 、D ₂ And D ₃ Three short-circuit indicating bulbs DX ₇ 、DX ₈ And DX ₉ Three photo-resistors RO ₄ 、RO ₅ And RO ₆ Three control relays J ₇ 、J ₈ And J ₉ Respectively forming three short circuit information feedback circuits, the working voltage is formed by a photoresistor RO ₄ 、RO ₅ And RO ₆ Provided after the short circuit.

8. The 380V electrical shock and short circuit preventing safe and energy-saving electrical appliance according to claim 1, wherein the three-phase three-way contactless switch is formed by three low-power one-way thyristors (CTKs) ₁ 、CTK ₂ And CTK ₃ And three high-power bidirectional thyristors CTS ₁ 、CTS ₂ And CTS ₃ To form a mixture; three high-power bidirectional thyristors CTS ₁ 、CTS ₂ And CTS ₃ The trigger voltage is that a contactless switch control circuit consists of three small-power unidirectional silicon controlled CTKs ₁ 、CTK ₂ And CTK ₃ Three power resistors RW1, RW2 and RW3 are connected in series respectively, and the trigger voltages of the three one-way thyristors are controlled by three relays J in three control circuits ₄ 、J ₅ And J ₆ Contact-series three-way three-thyristor conduction angle adjustable resistor RP ₄ 、RP ₅ And RP ₆ And a positive 12V direct current power supply provided from the rectifying and voltage stabilizing circuit.

9. The 380V electric shock protection and short circuit prevention safe and energy-saving electric appliance according to claim 1, wherein the on and off time of the contactless switch is controlled by three photoelectric control circuits, a delay control circuit, a contactless switch control circuit and a short circuit information feedback circuit respectively when the line is short-circuited and after the fault is cleared.