CN205407228U

CN205407228U - How compatible three -phase electrical apparatus of low -power consumption low cost versatile protector that opens circuit

Info

Publication number: CN205407228U
Application number: CN201620186368.6U
Authority: CN
Inventors: 钟兴明; 胡海洋; 钟金丞; 钟椰
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-11
Filing date: 2016-03-11
Publication date: 2016-07-27
Anticipated expiration: 2026-03-11

Abstract

The utility model discloses a how compatible three -phase electrical apparatus of low -power consumption low cost versatile protector that opens circuit, including solenoid trip switch subassembly unit, the electric current lacks looks sensing switch element, and the electric current lacks opens or close selected cell mutually, and voltage lacks looks sensing switch element, lacks the trigger element of delaying time mutually, external signal input the control unit, and electric leakage sensing and threshold trigger element, the electric leakage triggers preferential electrical unit, leaks the electric test unit, the overvoltage trigger element, three -phase or single -phase rectifier unit, electronic switch are triggered switches on delay element. This product is small, and is with low costs, uses the consumption little, compatible strong, is applicable to the overflowing of three -phase asynchronous motor and ordinary three -phase electrical apparatus, electric leakage, superpressure, under -voltage, current -voltage and lacks the protection of opening circuit of threading off of looks (ordinary three -phase electrical apparatus uses and to lack the looks function by the electric current, can close), external signal control.

Description

The many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost

Technical field

This utility model relates to running protection and the three-phase electric apparatus protection art of threephase asynchronous, refers in particular to the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost.

Background technology

Threephase asynchronous model specification is a lot, and use face is extensively well-known.Owing to it is the electrical appliance that electric energy converts rotating mechanical energy to, it is necessary to have the connection of power transmission line, unavoidable mechanical vibration；And transmission pressure, switch, catalyst, binding post etc. transmission of electricity joint portion, by reasons such as the humidity of nature, oxidation, dirt dyes, the factors such as improper matched by the mechanical vibration and the electric fuse that also have motor itself, cause that single line fracture produces to lack a phase current operational failure, and people are called electric current phase shortage；Also have a kind of situation to be that motor is near and around all do not produce lead-in wire loop cracking phenomena, three-phase current loop is normal, but cause that greatly motor phase failure goes on a long journey because remotely or more remotely having a phase power supply open circuit or wire contacts resistance to become, now all there is electric current in motor three-phase loop, simply electric current is too uneven, voltage step is relatively big, and people are called voltage phase shortage；No matter it is voltage phase shortage, or electric current phase shortage, the load major part of motor is added in the acting on single phase winding, in several seconds that phase shortage starts, rotating speed successively decreases, owing to the reactance of the slack-off generation of rotating speed is less, electric current strengthens, and causes motor excessive heating to burn out winding and damage；People are in order to protect motor, it is to avoid unnecessary economic loss, usually give motor power input, add stream, electric leakage, open-phase protection measure；Current cross stream, electric leakage protection technology has basically reached Micro Energy Lose and has waited for the ideal standard of protection, but phase shortage aspect is also undesirable, be not protect incomplete, it is simply that application single-piece is many, and volume is too big, and cost is high, and open-phase protection to run power consumption too big, more than 20W at least.

Utility model content

In view of this; this utility model is for the disappearance of prior art existence; its main purpose is to provide the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost; its can effectively solve existing phase-lacking protective device be not protect incomplete; being exactly that to apply single-piece many, volume is too big, and cost is high; and open-phase protection runs power consumption too greatly, the problem bad with the compatibility that stream excessively, electric leakage, superpressure, out of Memory control.

For achieving the above object, this utility model adopts such as purgation technical scheme:

nullThe many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost，Include alternating current power supply lead-in clamp INN、Alternating current power supply lead-in clamp INA、Alternating current power supply lead-in clamp INB、Alternating current power supply lead-in clamp INC、Trip switch KA、Trip switch KB、Trip switch KC、Tripping coil LA、Tripping coil LB、Tripping coil LC and tripping coil LT、Trip link TA、Trip link TB、Trip link TC and trip link T、Electric leakage induction coil BO、Electric current phase shortage induction coil LGA、Electric current phase shortage induction coil LGB、Electric current phase shortage induction coil LGC、Electric current phase shortage inductive switch LGKA、Electric current phase shortage inductive switch LGKB、Electric current phase shortage inductive switch LGKC、Device output wiring terminal OUTN、Device output wiring terminal OUTA、Device output wiring terminal OUTB、Device output wiring terminal OUTC、Leak(age) test switch AN、Leak(age) test current-limiting resistance RN、Positive temperature coefficient resistance RA、Positive temperature coefficient resistance RB、Positive temperature coefficient resistance RC、Resistance R1、Resistance R2、Resistance R3、Resistance R4、Resistance R5、Resistance R6、Resistance R7、Resistance R8、Resistance R9、Resistance R10、Resistance R11、Resistance R12、Resistance R13、Resistance R14、Electric capacity C1、Electric capacity C2、Electric capacity C3、Electric capacity C4、Electric capacity C5、Electric capacity C6、Electric capacity C7、Electric capacity C8、Electric capacity C9、Electric capacity C10、Electric capacity C11、Electric capacity C12、Electric capacity C13、Electric capacity C14、Diode D1、Diode D2、Diode D3、Diode D4、Diode D5、Diode D6、Diode D7、Diode D8、Diode D9、Diode D10、Photoelectric coupling electronics amplification integrated block IC A、Photoelectric coupling electronics amplification integrated block IC B、Photoelectric coupling electronics amplification integrated block IC C、Two trigger tube B1、Two trigger tube B2、Two trigger tube B3、Trigger tube B4、Three trigger tube B5、Stabilivolt W1、Stabilivolt W2、Stabilivolt W3、Controllable silicon CR、Midget relay DJ、Field effect transistor 4N90；

Alternating current power supply lead-in clamp INN is either directly through going between through electric leakage induction coil BO to device output wiring terminal OUTN；Alternating current power supply lead-in clamp INA connects trip switch KA front end, trip switch KA rear end connects tripping coil LA front end, tripping coil LA rear end connects wire traverse electric leakage induction coil BO to electric current phase shortage inductive switch coil LGA front end, end connection device output wiring terminal OUTA after electric current phase shortage inductive switch coil LGA；Alternating current power supply lead-in clamp INB connects trip switch KB front end, trip switch KB rear end connects tripping coil LB front end, tripping coil LB rear end connects wire traverse electric leakage induction coil BO to electric current phase shortage inductive switch coil LGB front end, end connection device output wiring terminal OUTB after electric current phase shortage inductive switch coil LGB；Alternating current power supply lead-in clamp INC connects trip switch KC front end, trip switch KC rear end connects tripping coil LC front end, tripping coil LC rear end connects wire traverse electric leakage induction coil BO to electric current phase shortage inductive switch coil LGC front end, end connection device output wiring terminal OUTC after electric current phase shortage inductive switch coil LGC；After electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are in parallel with electric capacity C1, electric capacity C2, electric capacity C3 respectively, arbitrarily electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are together in series and form two ends, after in this two ends parallel connection, electric current phase shortage selects switch XK, one end connects mainboard voltage phase shortage sensitive switch outfan XI, and the other end connects on motherboard power supply negative terminal BG line；Leak(age) test button AN mono-end connection device output wiring terminal OUTB, the leak(age) test button AN other end connects leak(age) test current-limiting resistance RN one end, and the leak(age) test current-limiting resistance RN other end is connected to tripping coil LC rear end；Device mainboard three phase mains wiring point ZA, ZB, ZC connect electric current phase shortage induction coil LGA, LGB, LGC front end respectively, connect again positive temperature coefficient resistance RA, RB, RC one end respectively, positive temperature coefficient resistance RA, RB, RC other end connects three-phase commutation bridge ac input end CA, CB, CC of diode D4, D5, D6, D7, D8, D9 composition respectively, three-phase commutation bridge positive voltage output end connects potential point BA, and its negative voltage outfan connects potential point BG；

The former limit of voltage phase shortage inductive switch, phase A road starts to connect the anode of diode D1 from exchange point CA, the negative terminal of diode D1 connects resistance R1 one end, the resistance R1 other end connects electric capacity C7 one end, the electric capacity C7 other end is in parallel with the resistance R4 other end to be connected with exchange point CB, resistance R4 one end is connected with the other end of two trigger tube B1 of concatenation, one end of two trigger tube B1 of concatenation is connected with the negative terminal of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A, the anode of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A connects the resistance R1 other end, and be connected with electric capacity C7 one end；

The former limit of voltage phase shortage inductive switch, phase B road starts to connect the anode of diode D2 from exchange point CB, the negative terminal of diode D2 connects resistance R2 one end, the resistance R2 other end connects electric capacity C8 one end, the electric capacity C8 other end is in parallel with the resistance R5 other end to be connected with exchange point CC, resistance R5 one end is connected with the other end of two trigger tube B2 of concatenation, one end of two trigger tube B2 of concatenation is connected with the negative terminal of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B, the anode of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B connects the resistance R2 other end, and be connected with electric capacity C8 one end；

The former limit of voltage phase shortage inductive switch, phase C road starts to connect the anode of diode D3 from exchange point CC, the negative terminal of diode D3 connects resistance R3 one end, the resistance R3 other end connects electric capacity C9 one end, the electric capacity C9 other end is in parallel with the resistance R6 other end to be connected with exchange point CA, resistance R6 one end is connected with the other end of two trigger tube B3 of concatenation, one end of two trigger tube B3 of concatenation is connected with the negative terminal of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C, the anode of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C connects the resistance R3 other end, and be connected with electric capacity C9 one end；

Phase A, phase B, tri-former limits of symmetrical voltage phase shortage inductive switch of phase C are annular series connection mutually, and starting point is connected with alternating current pressure point CA, CB, CC respectively, defines loop, phase of three-phase voltage inductive switch former limit；nullSecondary collector and emitter by photoelectric coupling electronics amplification integrated block IC A、The secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC B、The upper electric capacity C4 of the secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC C parallel connection respectively、Electric capacity C5、Electric capacity C6 also complies with the sense of current successively and connects into closed loop circuit，Three points arbitrarily disconnect a point，Define a colelctor electrode input and another emitter stage outfan，Colelctor electrode input connects the negative terminal of stabilivolt W1，Emitter stage outfan XI connects electric current phase shortage sensitive switch LGKA one end，Tripping coil LT one end connects the negative electrode of diode D10、Motherboard power supply positive pole BA、One end of the trigger tube B5 of three concatenations，The tripping coil LT other end connects the anode of diode D10、One end of resistance R7、The drain electrode of field effect transistor 4N90，The other end of resistance R7 connects one end of trigger tube B4、The anode of controllable silicon CR、One end of the normally opened contact DJK of relay DJ、One end of electric capacity C10、One end of resistance R8、The power end of stabilivolt W1，The other end of electric capacity C10 and the other end of resistance R8 connect on power supply BG line，The other end of the normally opened contact DJK of relay DJ connects on triggering signal point BH，Relay DJ coil two ends connect the external control signal input wires point JI of mainboard、JO，The other end of trigger tube B4、The other end of resistance R9、The negative electrode of controllable silicon CR、The other end of resistance R14、One end of the other end of electric capacity C14 and resistance R10 meets on triggering signal point BH；nullOne end of resistance R9 connects the other end of three trigger tube B5 being serially connected，One end of electric capacity C14 connects the other end of resistance R13 and the control pole of controllable silicon CR，One end of resistance R13 connects the other end of resistance R12 and one end of electric capacity C13，One end of resistance R12 connects the negative electrode of stabilivolt W3、Electric capacity C12 one end and electric leakage induction coil B0 access point RI，One end of the anode of stabilivolt W3 and resistance R14 and electric capacity C12、The electric capacity C13 other end meets at electric leakage induction coil access point RG，The resistance R10 other end connects the grid of field effect transistor 4N90、The negative electrode of stabilivolt W2、One end of electric capacity C11 and one end of resistance R11，The source electrode of field effect transistor 4N90、The anode of stabilivolt W2、The other end of electric capacity C11 and the other end of resistance R11 meet on power supply BG line.

As a kind of preferred version, described electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6 are buffering electric capacity.

As a kind of preferred version, described positive temperature coefficient resistance RA, positive temperature coefficient resistance RB, positive temperature coefficient resistance RC are the protection of mainboard internal fault and self-shield sample resistance.

As a kind of preferred version, described resistance R7 be mainboard to electric leakage, phase shortage, under-voltage, outer control function setting source current limiting resistance.

As a kind of preferred version, described trigger tube B4 is default phase signal or under-voltage signal lag driving trigger tube, and working value selects 90V.

As a kind of preferred version, described electric capacity C10 is integration energy storage delay capacitor.

As a kind of preferred version, described resistance R8 is time-delay reset resistance.

As a kind of preferred version, described trigger tube B5 is 240V high pressure trigger tube.

As a kind of preferred version, described resistance R9 and resistance R10 is current-limiting resistance.

As a kind of preferred version, described diode D10 is weakening diode.

This utility model compared with prior art has clear advantage and beneficial effect, specifically, as shown from the above technical solution:

This utility model uses the power on the electromagnetic property of coil and micro-magnetic on state characteristic of tongue tube, the current course that quantitative change scope is very big directly converts to the break-make both sexes of Push And Release, makes electric current inductive switch unit；Applied voltage gating triggers the high pressure trigger tube of negative resistance on state characteristic and makes voltage induced switch element with rectifier tube, resistance, electric capacity, optocoupler components；Three electric current inductive switch unit and three voltage induced switch elements are implanted in three-phase circuit, defines six low current switch with electrical characteristics Push And Release, they are complied with the sense of current and is together in series；nullDefine a default phase signal main switch，But owing to they are operated in the out of phase of three-phase alternating current，They break-makes are not on same timing node，Namely it is that alternation switch motion all done by each switch，But it is difficult to electric current pass through，For this each little switch ends suitable capacitor in parallel in series connection，Allowing switching current is that eddy current roller passes through，Define pulsation default phase signal current path，The electric current that it can pass through is milliampere level，Work as on-off control to adapt to this low current switch，This utility model adopts voltage to drive the field effect transistor of electronic switching element as master control output element，Utilize source current as secondary signal source，Take voltage segmented mode to produce electric leakage and outer control and phase shortage and under-voltage etc. secondary drives signal，Trigger signal with supervoltage and form the total output of point driving，Stabilivolt is adopted to seal in the preferred power supply producing electric leakage and extraneous signal control function in open-phase protection signal code loop，Define a source multipurpose feature of this device，And the source current of this device electric leakage phase shortage outer control etc. is by resistance R7 current limliting，The value of resistance R7 takes 22M Ω all can reliably working，Visible device is when 380V alternating current circuit is applied，The electric current that resistance R7 passes through is microampere pole，The wastage in bulk or weight of resistance R7 and thereafter circuit is within 0.03W，Current-limiting resistance R1=R2=R3 value plus voltage phase shortage inductive switch takes 3.3M Ω，Consume estimation at about 0.1W，Superpressure is drawn triggering circuit and is consumed 0.005W，This device estimates that except switch contact consumption total power consumption is at most but without more than 0.15W，Additionally three electric current phase shortage inductive switch series connection group two ends and on a microswitch，Achieve the open and close of function of current phase-loss protection，After closing function of current phase-loss protection，This device can be used for crossing of common three-phase electric apparatus and flows、Electric leakage、Superpressure、Voltage phase shortage、And the protection that extraneous signal controls uses，The backward voltage that additionally overpressure protection function produces after three-phase is disconnected has absorption protective effect；Described in before combining; this small product size is little; cost is low; use power consumption is little; compatible strong; suitable in threephase asynchronous and the stream excessively of common three-phase electric apparatus, electric leakage, superpressure, under-voltage, current/voltage phase shortage (common three-phase electric apparatus uses without electric current phase shortage function, can close), extraneous signal control dropout open circuit protection.

For more clearly setting forth architectural feature of the present utility model and effect, below in conjunction with accompanying drawing and specific embodiment, this utility model is described in detail.

Accompanying drawing explanation

Fig. 1 is the structural representation of the preferred embodiment of this utility model；

Fig. 2 be this utility model preferred embodiment in the enlarged diagram of electric current phase shortage sensitive switch circuit；

Fig. 3 be this utility model preferred embodiment in the enlarged diagram of voltage phase shortage sensitive switch circuit.

Detailed description of the invention

nullRefer to shown in Fig. 1 to Fig. 3，That show the concrete structure of the preferred embodiment of this utility model，Include alternating current power supply lead-in clamp INN、Alternating current power supply lead-in clamp INA、Alternating current power supply lead-in clamp INB、Alternating current power supply lead-in clamp INC、Trip switch KA、Trip switch KB、Trip switch KC、Tripping coil LA、Tripping coil LB、Tripping coil LC and tripping coil LT、Trip link TA、Trip link TB、Trip link TC and trip link T、Electric leakage induction coil BO、Electric current phase shortage induction coil LGA、Electric current phase shortage induction coil LGB、Electric current phase shortage induction coil LGC、Electric current phase shortage inductive switch LGKA、Electric current phase shortage inductive switch LGKB、Electric current phase shortage inductive switch LGKC、Device output wiring terminal OUTN、Device output wiring terminal OUTA、Device output wiring terminal OUTB、Device output wiring terminal OUTC、Leak(age) test switch AN、Leak(age) test current-limiting resistance RN、Positive temperature coefficient resistance RA、Positive temperature coefficient resistance RB、Positive temperature coefficient resistance RC、Resistance R1、Resistance R2、Resistance R3、Resistance R4、Resistance R5、Resistance R6、Resistance R7、Resistance R8、Resistance R9、Resistance R10、Resistance R11、Resistance R12、Resistance R13、Resistance R14、Electric capacity C1、Electric capacity C2、Electric capacity C3、Electric capacity C4、Electric capacity C5、Electric capacity C6、Electric capacity C7、Electric capacity C8、Electric capacity C9、Electric capacity C10、Electric capacity C11、Electric capacity C12、Electric capacity C13、Electric capacity C14、Diode D1、Diode D2、Diode D3、Diode D4、Diode D5、Diode D6、Diode D7、Diode D8、Diode D9、Diode D10、Photoelectric coupling electronics amplification integrated block IC A、Photoelectric coupling electronics amplification integrated block IC B、Photoelectric coupling electronics amplification integrated block IC C、Two trigger tube B1、Two trigger tube B2、Two trigger tube B3、Trigger tube B4、Three trigger tube B5、Stabilivolt W1、Stabilivolt W2、Stabilivolt W3、Controllable silicon CR、Midget relay DJ、Field effect transistor 4N90.

Alternating current power supply lead-in clamp INN is either directly through going between through electric leakage induction coil BO to device output wiring terminal OUTN；Alternating current power supply lead-in clamp INA connects trip switch KA front end, trip switch KA rear end connects tripping coil LA front end, tripping coil LA rear end connects wire traverse electric leakage induction coil BO to electric current phase shortage inductive switch coil LGA front end, end connection device output wiring terminal OUTA after electric current phase shortage inductive switch coil LGA；Alternating current power supply lead-in clamp INB connects trip switch KB front end, trip switch KB rear end connects tripping coil LB front end, tripping coil LB rear end connects wire traverse electric leakage induction coil BO to electric current phase shortage inductive switch coil LGB front end, end connection device output wiring terminal OUTB after electric current phase shortage inductive switch coil LGB；Alternating current power supply lead-in clamp INC connects trip switch KC front end, trip switch KC rear end connects tripping coil LC front end, tripping coil LC rear end connects wire traverse electric leakage induction coil BO to electric current phase shortage inductive switch coil LGC front end, end connection device output wiring terminal OUTC after electric current phase shortage inductive switch coil LGC；After electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are in parallel with electric capacity C1, electric capacity C2, electric capacity C3 respectively, arbitrarily electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are together in series and form two ends, after in this two ends parallel connection, electric current phase shortage selects switch XK, one end connects mainboard voltage phase shortage sensitive switch outfan XI, and the other end connects on motherboard power supply negative terminal BG line；Leak(age) test button AN mono-end connection device output wiring terminal OUTB, the leak(age) test button AN other end connects leak(age) test current-limiting resistance RN one end, and the leak(age) test current-limiting resistance RN other end is connected to tripping coil LC rear end；Device mainboard three phase mains wiring point ZA, ZB, ZC connect electric current phase shortage induction coil LGA, LGB, LGC front end respectively, connect again positive temperature coefficient resistance RA, RB, RC one end respectively, positive temperature coefficient resistance RA, RB, RC other end connects three-phase commutation bridge ac input end CA, CB, CC of diode D4, D5, D6, D7, D8, D9 composition respectively, three-phase commutation bridge positive voltage output end connects potential point BA, and its negative voltage outfan connects potential point BG.

The former limit of voltage phase shortage inductive switch, phase A road starts to connect the anode of diode D1 from exchange point CA, the negative terminal of diode D1 connects resistance R1 one end, the resistance R1 other end connects electric capacity C7 one end, the electric capacity C7 other end is in parallel with the resistance R4 other end to be connected with exchange point CB, resistance R4 one end is connected with the other end of two trigger tube B1 of concatenation, one end of two trigger tube B1 of concatenation is connected with the negative terminal of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A, the anode of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A connects the resistance R1 other end, and be connected with electric capacity C7 one end.

The former limit of voltage phase shortage inductive switch, phase B road starts to connect the anode of diode D2 from exchange point CB, the negative terminal of diode D2 connects resistance R2 one end, the resistance R2 other end connects electric capacity C8 one end, the electric capacity C8 other end is in parallel with the resistance R5 other end to be connected with exchange point CC, resistance R5 one end is connected with the other end of two trigger tube B2 of concatenation, one end of two trigger tube B2 of concatenation is connected with the negative terminal of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B, the anode of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B connects the resistance R2 other end, and be connected with electric capacity C8 one end.

The former limit of voltage phase shortage inductive switch, phase C road starts to connect the anode of diode D3 from exchange point CC, the negative terminal of diode D3 connects resistance R3 one end, the resistance R3 other end connects electric capacity C9 one end, the electric capacity C9 other end is in parallel with the resistance R6 other end to be connected with exchange point CA, resistance R6 one end is connected with the other end of two trigger tube B3 of concatenation, one end of two trigger tube B3 of concatenation is connected with the negative terminal of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C, the anode of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C connects the resistance R3 other end, and be connected with electric capacity C9 one end.

In the present embodiment, electric current phase shortage sensitive switch is for phase A, electric current phase shortage induction coil LGA/ electric current phase shortage inductive switch LGKA is with the short cylinder of plastics of diameter 12MM, enclose around upper enough thick enamel-covered wire 11, the normally opened contact tongue tube adopting high sensitive magnetic connects lead-in wire, insert after carrying out insulation in the coil hole wound, as long as electric current is at more than 0.6A in coil current phase shortage induction coil LGA, tongue tube normally opened contact just closes connection；Voltage phase shortage inductive switch is for phase A, two 210V high pressure trigger tube series connection are adopted to form the rectification of a 420V voltage gating element and diode D1, utilize the electric light electric isolution amplification characteristic of photoelectric coupling electronics amplification integrated block IC A, it is that 3.3M Ω makes current limliting by resistance R1 value, resistance R4 makees to trigger buffering current limliting, integration energy storage is done with electric capacity C7, current buffering is made with electric capacity C4, (the being equivalent to alternating voltage 300V) conducting when two trigger tube B1 both end voltage of series connection are more than 420V, conducting after current road is luminous through the former limit light emitting diode of photoelectric coupling amplification integrated block IC A, the phototriode causing the sub-amplification integrated block IC A secondary of photoelectric coupling turns on；Make voltage gated optical electric coupling electrical switch three parts symmetrical and electric current gating electromagnetic induction switch three parts symmetrical after this manner, two ends are formed after they are complied with sense of current series connection, and give six relatively independent electric drive switch in parallel same capacitor, electric current road is when they these series connection groups, owing to each switch motion timing node is different, electric current presents eddy current roller to be passed through, as long as there being a switch obstructed, current path is just cut-off；The source current limiting resistance that resistance R7 is mainboard to be set electric leakage, phase shortage, under-voltage, outer control function, value selects 22M Ω resistance, it is about 30uA by electric current, namely meets the integration needs triggering circuit, meets again the small area analysis working condition of phase shortage sensitive switch group；Electric capacity C7 is storage capacitor；Stabilivolt W1 sets up the preferred power supply that electric leakage triggers with outer control, and selecting voltage stabilizing value is 36V, it is ensured that the power supply that electric leakage at any time and outer control trigger needs；Relay DJ is that extraneous signal controls input and buffer action；Resistance R8 is time-delay reset resistance, and value selects 44M Ω；One-way SCR CR is by leakage trigger electrical switch, produces electric leakage secondary and drives electric current；The circuit that electric capacity C12, electric capacity C13, electric capacity C14, resistance R12, resistance R13, resistance R14 and stabilivolt W3 form is electric leakage signal input threshold and Anti-Jamming；Trigger tube B4 is default phase signal or under-voltage signal lag driving trigger tube, and working value selects 90V；Three trigger tube B5 are that supervoltage draws trigger action, form 720V voltage gating characteristics with three 240V high pressure trigger tube series connection;Resistance R9, resistance R10 are current-limiting resistance;Resistance R11 electric capacity C11 is stability maintenance time-lag action, it is ensured that be triggered electrical switch normal operation;Stabilivolt W2 is 20V field effect transistor input voltage-limiting protection；Field effect transistor 4N90 is that voltage drives power electronic switching；Diode D10 is weakening effect；Tripping coil LT is the comprehensive dropout electromagnetic conversion mechanical energy assembly such as electric leakage, phase shortage, superpressure, under-voltage, external signal control；Tripping coil LA, tripping coil LB, tripping coil LC are that corresponding phase current exceeds the quata to determine dropout electromagnetic conversion mechanical energy assembly；Electric leakage induction coil BO is acquirement electrical leakage quantity is the effect of signal；Diode D4, diode D5, diode D6, diode D7, diode D8, diode D9 are for completing three-phase or single-phase rectifier work；Positive temperature coefficient resistor RA, positive temperature coefficient resistor RB, positive temperature coefficient resistor RC are for producing self protective function resistance.

Three-phase or single-phase power rectifier unit is formed by diode D4, diode D5, diode D6, diode D7, diode D8, diode D9；Carry out three phase mains rectification when three-phase CA, CB, CC terminal voltage is normal, carry out single-phase rectifier when three-phase CA, CB, CC terminal voltage has a phase terminal voltage too low.

Formed, with field effect transistor 4N90 and tripping coil LT, the driving that is triggered with electric capacity C11 and stabilivolt W2 by resistance R10, resistance R11 and control trip unit.When signaling point BH inputs enough driving voltages; electric current cushions through resistance R10 and charges to electric capacity C11; it is limited in 20V by stabilivolt W2; and discharge through resistance R11 time delay; field effect transistor 4N90 is driven and is turned on simultaneously; power supply BA anode is crossed field effect transistor 4N90 by tripping coil LT and is formed electric current to power supply negative terminal, and tripping coil LT converts electric energy to electromagnetic and mechanical can drive trip switch deenergization, produces protection act.

Supervoltage trigger element is formed by three trigger tube B5 and resistance R9；When power supply BA to BG voltage is more than 720V, three trigger tube B5 turn on rapidly, and power supply BA crosses resistance R3 to BH through three trigger tube B5 and produces current signal, and making to be triggered drives control trip unit to complete protection work of threading off.

Phase shortage Time-delayed trigger unit is formed by resistance R7 and trigger tube B4 and electric capacity C10 and stabilivolt W1 and the voltage phase shortage connected thereof and electric current phase shortage inductive switch series connection group；When in stabilivolt W1 electric current because when electric current phase shortage or voltage phase shortage and under-voltage cut-off; electric capacity C7 is constantly charged by the electric current through resistance R7; within about 3 seconds, BC point voltage rises to 90V from 36V+, and trigger tube B4 is triggered and turns on, and making to be triggered drives control trip unit to complete protection work of threading off.

Leakage trigger unit is formed with resistance R12, resistance R13, resistance R14 with stabilivolt W3 and electric leakage induction coil BO by controllable silicon CR and electric capacity C12, electric capacity C13, electric capacity C14；When leakage current is equal to or more than setting value; electric leakage induction coil BO faradic current is through being triggered controllable silicon CR with the stabilivolt W3 thresholding formed with resistance R12, resistance R13, resistance R14 by electric capacity C12, electric capacity C13, electric capacity C14; the 36V+ electric energy that electric capacity C10 two ends keep is discharged to BH through controllable silicon CR and produces current signal, and making to be triggered drives control trip unit to complete protection work of threading off.

Switched AN and leak(age) test current-limiting resistance RN by leak(age) test and form leakage function test unit；When leak(age) test switchs AN connection; from trip switch KB to tripping coil LB, rear end goes between in the middle of electric leakage induction coil BO phase B; overcurrent phase shortage induction coil LGB switchs AN to leak(age) test; cross leak(age) test current-limiting resistance RN to tripping coil LC and cross trip switch KC connection phase C; visible current loop single line is in the middle of electric leakage induction coil BO; the alternating magnetic field causing electric leakage induction coil BO is uneven; induce electric leakage signal; causing that creepage protection function circuit carries out dropout protection act, creepage protection function is detected.

Switch K is connected in parallel on three-phase current phase shortage inductive switch series connection group two ends formation electric current phase shortage and is turned on and off functional unit；When switching K Guan Bi, three-phase current phase shortage inductive switch is shorted inefficacy, and when contrary switch K disconnects, switch is considered as losing efficacy, three-phase current phase shortage inductive switch functional rehabilitation.

Formed earth leakage protective by resistance R7 and electric capacity C10 and stabilivolt W1 and extraneous signal controls input preferred power supply unit；When the voltage of power supply BG line is equal to 0V by stabilivolt W1 anode tap, because stabilivolt characteristic maintains the voltage 36V of voltage stabilizing value, remain that earth leakage protective and extraneous signal control the triggering voltage of input.

Phase of three-phase voltage sensitive switch unit is formed by diode D1, diode D2, diode D3, two trigger tube B1, two trigger tube B2, two trigger tube B3, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, photoelectric coupling electronics amplification integrated block IC A, photoelectric coupling electronics amplification integrated block IC B, photoelectric coupling electronics amplification integrated block IC C, electric capacity C4, electric capacity C5, electric capacity C6；When the relative alternating voltage of mainboard three-phase alternating current pressure point CA, CB, CC is more than 300V to 380V, three-phase voltage sensitive switch is triggered conducting more than 420V to 540V because trigger tube two ends reach DC voltage, photoelectric coupling electronics amplifier integrated block former limit diode is by short duration current that the cycle is 50 milliseconds to 2 seconds, secondary phototriode produces the burst pulse conducting phase accordingly, stabilivolt W1 series loop current is pulsed through, BC point voltage fluctuates, but less than 90V, trigger tube B4 remains waiting for；When the relative alternating voltage of mainboard three-phase alternating current pressure point CA, CB, CC is lower than 300V; cause wherein a phase or biphase voltage sensor switch because of trigger tube two ends do not reach DC voltage 420V fail trigger and obstructed; cause that photoelectric coupling secondary phototriode ends; stabilivolt W1 series loop current is zero; BC point voltage rises to 90V; electric energy on electric capacity C10 produces trigger current signal by trigger tube B4 to BH, and making to be triggered drives control trip unit to complete protection work of threading off.

Three-phase current phase shortage sensitive switch unit is constituted by electric current phase shortage inductive switch coil LGA, electric current phase shortage inductive switch coil LGB, electric current phase shortage inductive switch coil LGC, electric current phase shortage electric current sense switch LGKA, electric current phase shortage electric current sense switch LGKB, electric current phase shortage electric current sense switch LGKC, electric capacity C1, electric capacity C2, electric capacity C3；Electric current phase shortage electric current sense switch LGKA, electric current phase shortage electric current sense switch LGKB, electric current phase shortage electric current sense switch LGKC are tongue tube, when three-phase current is all higher than more than 0.6A, three-phase tongue tube all intervals close or close for a long time, stabilivolt W1 series loop current is pulsed through, BC point voltage fluctuates, but less than 90V, trigger tube B4 remains waiting for；When in three-phase current phase shortage inductive switch, arbitrary phase current is less than 0.6A; this phase tongue tube will can not close and open a way for a long time; cause that stabilivolt W1 series loop current is zero; BC point voltage rises; about cross 3 seconds BC point voltages and rise to 90V; trigger tube B4 is triggered and turns on, and the electric energy on electric capacity C10 produces current signal by trigger tube B4 to BH, and making to be triggered drives control trip unit to complete protection work of threading off.

In the present embodiment, in order to save cost, it is possible to high pressure trigger tube low pressure trigger tube is replaced:

1, trigger tube B4=90V, connects offspring's use with three DB3 (low pressure trigger tube), and magnitude of voltage is 99V.

2, trigger tube B1*2=B2*2=B3*3=420V, replaces with 12 DB3 series connection, and magnitude of voltage is 396V.

3, trigger tube B5*3=720V, replaces with 22 DB3 series connection, and magnitude of voltage is 726V.

The above, it it is only preferred embodiment of the present utility model, not technical scope of the present utility model is imposed any restrictions, therefore every any trickle amendment, equivalent variations and modification above example made according to technical spirit of the present utility model, all still fall within the scope of technical solutions of the utility model.

Claims

null1. the many compatible three-phase electric apparatus open circuit comprehensive protectors of low power consumption and low cost，It is characterized in that: include alternating current power supply lead-in clamp INN、Alternating current power supply lead-in clamp INA、Alternating current power supply lead-in clamp INB、Alternating current power supply lead-in clamp INC、Trip switch KA、Trip switch KB、Trip switch KC、Tripping coil LA、Tripping coil LB、Tripping coil LC and tripping coil LT、Trip link TA、Trip link TB、Trip link TC and trip link T、Electric leakage induction coil BO、Electric current phase shortage induction coil LGA、Electric current phase shortage induction coil LGB、Electric current phase shortage induction coil LGC、Electric current phase shortage inductive switch LGKA、Electric current phase shortage inductive switch LGKB、Electric current phase shortage inductive switch LGKC、Device output wiring terminal OUTN、Device output wiring terminal OUTA、Device output wiring terminal OUTB、Device output wiring terminal OUTC、Leak(age) test switch AN、Leak(age) test current-limiting resistance RN、Positive temperature coefficient resistance RA、Positive temperature coefficient resistance RB、Positive temperature coefficient resistance RC、Resistance R1、Resistance R2、Resistance R3、Resistance R4、Resistance R5、Resistance R6、Resistance R7、Resistance R8、Resistance R9、Resistance R10、Resistance R11、Resistance R12、Resistance R13、Resistance R14、Electric capacity C1、Electric capacity C2、Electric capacity C3、Electric capacity C4、Electric capacity C5、Electric capacity C6、Electric capacity C7、Electric capacity C8、Electric capacity C9、Electric capacity C10、Electric capacity C11、Electric capacity C12、Electric capacity C13、Electric capacity C14、Diode D1、Diode D2、Diode D3、Diode D4、Diode D5、Diode D6、Diode D7、Diode D8、Diode D9、Diode D10、Photoelectric coupling electronics amplification integrated block IC A、Photoelectric coupling electronics amplification integrated block IC B、Photoelectric coupling electronics amplification integrated block IC C、Two trigger tube B1、Two trigger tube B2、Two trigger tube B3、Trigger tube B4、Three trigger tube B5、Stabilivolt W1、Stabilivolt W2、Stabilivolt W3、Controllable silicon CR、Midget relay DJ、Field effect transistor 4N90；

Alternating current power supply lead-in clamp INN is either directly through going between through electric leakage induction coil BO to device output wiring terminal OUTN；Alternating current power supply lead-in clamp INA connects trip switch KA front end, trip switch KA rear end connects tripping coil LA front end, tripping coil LA rear end connects wire traverse electric leakage induction coil BO to electric current phase shortage inductive switch coil LGA front end, end connection device output wiring terminal OUTA after electric current phase shortage inductive switch coil LGA；Alternating current power supply lead-in clamp INB connects trip switch KB front end, trip switch KB rear end connects tripping coil LB front end, tripping coil LB rear end connects wire traverse electric leakage induction coil BO to electric current phase shortage inductive switch coil LGB front end, end connection device output wiring terminal OUTB after electric current phase shortage inductive switch coil LGB；Alternating current power supply lead-in clamp INC connects trip switch KC front end, trip switch KC rear end connects tripping coil LC front end, tripping coil LC rear end connects wire traverse electric leakage induction coil BO to electric current phase shortage inductive switch coil LGC front end, end connection device output wiring terminal OUTC after electric current phase shortage inductive switch coil LGC；After electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are in parallel with electric capacity C1, electric capacity C2, electric capacity C3 respectively, arbitrarily electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are together in series and form two ends, after in this two ends parallel connection, electric current phase shortage selects switch XK, one end connects mainboard voltage phase shortage sensitive switch outfan XI, and the other end connects on motherboard power supply negative terminal BG line；Leak(age) test button AN mono-end connection device output wiring terminal OUTB, the leak(age) test button AN other end connects leak(age) test current-limiting resistance RN one end, and the leak(age) test current-limiting resistance RN other end is connected to tripping coil LC rear end；Device mainboard three phase mains wiring point ZA, ZB, ZC connect electric current phase shortage induction coil LGA, LGB, LGC front end respectively, connect again positive temperature coefficient resistance RA, RB, RC one end respectively, positive temperature coefficient resistance RA, RB, RC other end connects three-phase commutation bridge ac input end CA, CB, CC of diode D4, D5, D6, D7, D8, D9 composition respectively, three-phase commutation bridge positive voltage output end connects potential point BA, and its negative voltage outfan connects potential point BG；

The former limit of voltage phase shortage inductive switch, phase A road starts to connect the anode of diode D1 from exchange point CA, the negative terminal of diode D1 connects resistance R1 one end, the resistance R1 other end connects electric capacity C7 one end, the electric capacity C7 other end is in parallel with the resistance R4 other end to be connected with exchange point CB, resistance R4 one end is connected with the other end of two trigger tube B1 of concatenation, one end of two trigger tube B1 of concatenation is connected with the negative terminal of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A, the anode of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A connects the resistance R1 other end, and be connected with electric capacity C7 one end；

The former limit of voltage phase shortage inductive switch, phase B road starts to connect the anode of diode D2 from exchange point CB, the negative terminal of diode D2 connects resistance R2 one end, the resistance R2 other end connects electric capacity C8 one end, the electric capacity C8 other end is in parallel with the resistance R5 other end to be connected with exchange point CC, resistance R5 one end is connected with the other end of two trigger tube B2 of concatenation, one end of two trigger tube B2 of concatenation is connected with the negative terminal of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B, the anode of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B connects the resistance R2 other end, and be connected with electric capacity C8 one end；

The former limit of voltage phase shortage inductive switch, phase C road starts to connect the anode of diode D3 from exchange point CC, the negative terminal of diode D3 connects resistance R3 one end, the resistance R3 other end connects electric capacity C9 one end, the electric capacity C9 other end is in parallel with the resistance R6 other end to be connected with exchange point CA, resistance R6 one end is connected with the other end of two trigger tube B3 of concatenation, one end of two trigger tube B3 of concatenation is connected with the negative terminal of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C, the anode of the light emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C connects the resistance R3 other end, and be connected with electric capacity C9 one end；

Phase A, phase B, tri-former limits of symmetrical voltage phase shortage inductive switch of phase C are annular series connection mutually, and starting point is connected with alternating current pressure point CA, CB, CC respectively, defines loop, phase of three-phase voltage inductive switch former limit；nullSecondary collector and emitter by photoelectric coupling electronics amplification integrated block IC A、The secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC B、The upper electric capacity C4 of the secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC C parallel connection respectively、Electric capacity C5、Electric capacity C6 also complies with the sense of current successively and connects into closed loop circuit，Three points arbitrarily disconnect a point，Define a colelctor electrode input and another emitter stage outfan，Colelctor electrode input connects the negative terminal of stabilivolt W1，Emitter stage outfan XI connects electric current phase shortage sensitive switch LGKA one end，Tripping coil LT one end connects the negative electrode of diode D10、Motherboard power supply positive pole BA、One end of the trigger tube B5 of three concatenations，The tripping coil LT other end connects the anode of diode D10、One end of resistance R7、The drain electrode of field effect transistor 4N90，The other end of resistance R7 connects one end of trigger tube B4、The anode of controllable silicon CR、One end of the normally opened contact DJK of relay DJ、One end of electric capacity C10、One end of resistance R8、The power end of stabilivolt W1，The other end of electric capacity C10 and the other end of resistance R8 connect on power supply BG line，The other end of the normally opened contact DJK of relay DJ connects on triggering signal point BH，Relay DJ coil two ends connect the external control signal input wires point JI of mainboard、JO，The other end of trigger tube B4、The other end of resistance R9、The negative electrode of controllable silicon CR、The other end of resistance R14、One end of the other end of electric capacity C14 and resistance R10 meets on triggering signal point BH；nullOne end of resistance R9 connects the other end of three trigger tube B5 being serially connected，One end of electric capacity C14 connects the other end of resistance R13 and the control pole of controllable silicon CR，One end of resistance R13 connects the other end of resistance R12 and one end of electric capacity C13，One end of resistance R12 connects the negative electrode of stabilivolt W3、Electric capacity C12 one end and electric leakage induction coil B0 access point RI，One end of the anode of stabilivolt W3 and resistance R14 and electric capacity C12、The electric capacity C13 other end meets at electric leakage induction coil access point RG，The resistance R10 other end connects the grid of field effect transistor 4N90、The negative electrode of stabilivolt W2、One end of electric capacity C11 and one end of resistance R11，The source electrode of field effect transistor 4N90、The anode of stabilivolt W2、The other end of electric capacity C11 and the other end of resistance R11 meet on power supply BG line.
2. the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost according to claim 1, it is characterised in that: described electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6 are buffering electric capacity.
3. the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost according to claim 1, it is characterised in that: described positive temperature coefficient resistance RA, positive temperature coefficient resistance RB, positive temperature coefficient resistance RC are the protection of mainboard internal fault and self-shield sample resistance.
4. the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost according to claim 1, it is characterised in that: described resistance R7 be mainboard to electric leakage, phase shortage, under-voltage, outer control function setting source current limiting resistance.
5. the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost according to claim 1, it is characterised in that: described trigger tube B4 is default phase signal or under-voltage signal lag driving trigger tube, and working value selects 90V.
6. the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost according to claim 1, it is characterised in that: described electric capacity C10 is integration energy storage delay capacitor.
7. the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost according to claim 1, it is characterised in that: described resistance R8 is time-delay reset resistance.
8. the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost according to claim 1, it is characterised in that: described trigger tube B5 is 240V high pressure trigger tube.
9. the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost according to claim 1, it is characterised in that: described resistance R9 and resistance R10 is current-limiting resistance.
10. the many compatible three-phase electric apparatus open circuit comprehensive protectors of a kind of low power consumption and low cost according to claim 1, it is characterised in that: described diode D10 is weakening diode.