CN105490101B - Has the protection plug of power-off tripping and superpressure trip avoidance function - Google Patents

Has the protection plug of power-off tripping and superpressure trip avoidance function Download PDF

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Publication number
CN105490101B
CN105490101B CN201610008359.2A CN201610008359A CN105490101B CN 105490101 B CN105490101 B CN 105490101B CN 201610008359 A CN201610008359 A CN 201610008359A CN 105490101 B CN105490101 B CN 105490101B
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Prior art keywords
divider resistance
circuit
resistance
power
superpressure
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CN201610008359.2A
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CN105490101A (en
Inventor
钱加灿
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Yuyao Jiarong Electronic Appliance Co Ltd
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Yuyao Jiarong Electronic Appliance Co Ltd
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Priority to CN201610847817.1A priority Critical patent/CN106299908B/en
Priority to CN201610008359.2A priority patent/CN105490101B/en
Publication of CN105490101A publication Critical patent/CN105490101A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6666—Structural association with built-in electrical component with built-in electronic circuit with built-in overvoltage protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H01R13/7137—Structural association with built-in electrical component with built-in switch the switch being a safety switch with thermal interrupter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
    • H02H3/253—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage for multiphase applications, e.g. phase interruption
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors

Abstract

The present invention discloses a kind of protection plug for having power-off tripping and superpressure trip avoidance function; including amplifying circuit, buckle releaser, rectification circuit, power supply instruction circuit for lamp, reduction voltage circuit, silicon-controlled, zero sequence current mutual inductor and ground line current mutual inductor, it is additionally provided with open-phase protection circuit.The present invention provides a kind of novel earth leakage protective devices, it has：Load supplying is cut off when default-phase protection function, i.e. L or N-terminal power failure or loose contact；Overpressure protection function, the protector under energized state, because cutting off load supplying when supply voltage exceeds 280V ± 10V；Plug overheat protection function is cut off the power when that is, protector plug temperature reaches preset temperature.

Description

Has the protection plug of power-off tripping and superpressure trip avoidance function
Technical field
The present invention relates to Electrical Safety protection technique fields, trip and superpressure trip avoidance function more particularly, to having power-off Protect plug.
Background technology
Existing electric leakage protection technology is mainly zero curve (N), and phase line (L) does earth leakage protective entirely also cross zero-sequence mutual inductance line Device uses, and ground wire electrified detection (voltage detecting and current detecting), and such technology is established to be had to last in supply voltage Corresponding defencive function can be provided on the basis of power supply, if just being met when zero-line open-circuit or the loose contact of electric power system When ground wire electrification or machine insulation occur abnormal, protector disconnects system can not reset dropout, ground strip caused by mechanical self-latching Piezoelectric voltage or because the leakage current of insulation damages charges machine, if human body causes electric shock behavior after touching, to solve such confession Also there is power-off trip protection device, since such protector is to be held electromagnetic coil by electric power system in the market in electrical anomaly phenomenon It is continuous to be attracted, tripping mechanism contact closure is made to reach continued power purpose, when electric power system power-off or phase shortage, electromagnetic coil is because of nothing Method actuation cause protector can not powering load reach protection philosophy, the drawback of the protected mode is:Electromagnetic coil continues Power supply causes coil heating, and serious fever for a long time influences protector service life and there are security risk, is protected under extreme condition Shield device will lose defencive function and cause serious consequence.
Invention content
(1) technical problems to be solved
Present invention aim to overcome disadvantages mentioned above, it is desirable to provide one kind has power-off tripping and superpressure trip avoidance function Protection plug.
(2) technical solution
To solve the above problems, the present invention proposes a kind of protection plug for having power-off tripping and superpressure trip avoidance function, packet Include amplifying circuit, buckle releaser, rectification circuit, power supply instruction circuit for lamp, reduction voltage circuit, silicon-controlled, zero sequence current mutual inductor and ground Line current mutual inductor, is additionally provided with open-phase protection circuit；
Electromagnetic coil of the open-phase protection circuit including buckle releaser, current-limiting resistance, shunt resistance, storage capacitor, first Diode, the second diode, the current-limiting resistance are arranged between storage capacitor anode and electromagnetic coil；First diode Anode connection storage capacitor, cathode connection electromagnetic coil；First diode is connected to silicon-controlled between electromagnetic coil； Second diode one end connection is silicon-controlled, other end connection shunt resistance one end, shunt resistance other end connection energy storage electricity Hold anode；
The circuit is additionally provided with superpressure detection circuit.
Further, the superpressure detection circuit include first voltage detector, the first divider resistance, the second divider resistance, Third divider resistance and the 4th divider resistance, the pin 3 of the first voltage detector are connected to the first divider resistance and second Between divider resistance, the pin 2 of the first voltage detector is connected between third divider resistance and the 4th divider resistance；Institute It states the first divider resistance and is also connected with storage capacitor anode.
Further, which further includes overtemperature detection circuit, and the overtemperature detection circuit includes second voltage detector, heat Quick resistance, the 5th divider resistance and the 6th divider resistance, the 5th divider resistance, thermistor and the 6th divider resistance connect successively It connects, the second voltage detector pin 5 is connected between thermistor and the 6th divider resistance, second voltage detector pin 6 are connected between third divider resistance and the 4th divider resistance.
Further, ground wire electrification indicating circuit is equipped between the ground wire and zero curve.
Further, the primary coil of the zero sequence current mutual inductor is additionally provided with test circuit.
(3) advantageous effect
Compared with prior art, the present invention has the following advantages：The present invention provides a kind of novel earth leakage protective device, It has：Load supplying is cut off when default-phase protection function, i.e. L or N-terminal power failure or loose contact；Overpressure protection function is led to Protector under electricity condition, because cutting off load supplying when supply voltage exceeds 280V ± 10V；Plug overheat protection function, that is, protect Shield device plug temperature is cut off the power when reaching preset temperature.
Description of the drawings
Fig. 1 is the circuit theory schematic diagram of the protection plug for having power-off tripping and superpressure trip avoidance function of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Implement below Example is used to illustrate the present invention, but be not limited to the scope of the present invention.
As shown in Figure 1, the present invention proposes a kind of protection plug for having power-off tripping and superpressure trip avoidance function, including amplification Circuit, buckle releaser S1-S2, rectification circuit, power supply instruction circuit for lamp, reduction voltage circuit, controllable silicon SCR 1, zero sequence current mutual inductor ZCT1 and ground line current mutual inductor ZCT2, is additionally provided with open-phase protection circuit；Wherein amplifying circuit be earth leakage protective chip U2, rectification Circuit is diode D1, D2, and power supply instruction circuit for lamp is made of Light-emitting diode LED 1 and resistance R3, and reduction voltage circuit is decompression electricity Hinder R2；
The open-phase protection circuit includes electromagnetic coil L1, current-limiting resistance R15, shunt resistance R16, the energy storage electricity of buckle releaser Hold C5, the first diode D7, the second diode D9D3, the current-limiting resistance R15 and be arranged on storage capacitor C5 anodes and electromagnetic wire It encloses between L1；The anode connection storage capacitor C5 of the first diode D7, cathode connection electromagnetic coil L1；One or two pole Pipe D7 is connected between controllable silicon SCR 1 and electromagnetic coil L1；Described second diode D9 one end connects controllable silicon SCR 1, another End connection shunt resistance R16 one end, shunt resistance R16 other ends connection storage capacitor C5 anodes；
The circuit is additionally provided with superpressure detection circuit.
The superpressure detection circuit include first voltage detector U1A, the first divider resistance R9, the second divider resistance R12, The pin 3 of third divider resistance R7 and the 4th divider resistance R13, the first voltage detector U1A are connected to the first partial pressure electricity Between hindering R9 and the second divider resistance R12, the pin 2 of the first voltage detector U1A be connected to third divider resistance R7 and Between 4th divider resistance R13；The first divider resistance R9 is also connected with storage capacitor C5 anodes.
The circuit further includes overtemperature detection circuit, and the overtemperature detection circuit includes second voltage detector U1B, temperature-sensitive electricity Hinder RT, the 5th divider resistance R8 and the 6th divider resistance R14, the 5th divider resistance R8, thermistor RT and the 6th divider resistance R14 is sequentially connected, and the second voltage detector U1B pins 5 are connected between thermistor RT and the 6th divider resistance R14, Second voltage detector U1B pins 6 are connected between third divider resistance R7 and the 4th divider resistance R13.
Ground wire electrification indicating circuit, electricity routing capacitance C1, resistance R1, neon lamp X1 groups are equipped between the ground wire and zero curve Into.
The primary coil of the zero sequence current mutual inductor ZCT1 is additionally provided with test circuit, test circuit by button switch K 1, Resistance R6 is formed.
The operation principle of the circuit is as follows：
1st, zero is loaded, phase line earth leakage protective
After protector plug access 220V input powers, return unit switch is pressed, is closed buckle releaser S1-S2, indicator light LED1 is lighted, and supply voltage charges through D1 rectifications, R15 current limlitings to C5 capacitors, and C5 terminal voltages are through the first diode D7 to electromagnetism Coil L1, electricity when controllable silicon SCR 1 provides protection.It is silicon-controlled to obtain electricity and in protection detection state；At the same time, electric current passes through Resistance R2 current limlitings, C2 capacitor filterings are powered to U1A, U1B, U2, and protector obtains electricity work (this process hereinafter referred:Protector obtains Electricity work)；When load end (output terminal) Lo or No arbitrary ends, which export, to leak electricity, zero sequence current mutual inductance coil ZCT1 output induced electricities Pressure, 1 and 2 feet of U2 detection driving circuits are sent into one end after ZCT1, when leakage current reaches preset value, the high electricity of 7 feet output Mean longitude D4, D8 are applied to L1 electromagnetic coils both ends, coil to control machines pole, controlled silicon conducting, C5 terminal voltages through D7 moments It is attracted and tripping mechanism is driven to disconnect closure contact (S2-S1), cut-out load power source plays the role of safeguard protection；
2nd, earth wire charged protecting (Ei ends)
Protector obtains electric work, and ground wire electrification electric current is through Ei outflow Eo ends, the induction coil ZCT2 outputs being through on E lines Induced voltage is sent after ZCT1 to the 1 of U2 and 2 feet respectively all the way, and when leakage current reaches preset value, the 7 feet output of U2 is high Level is through D4, and D8 is sent to SCR1 trigger electrodes, controlled silicon conducting, and C5 terminal voltages are applied to L1 electromagnetic coils both ends, line through D7 moments Circle, which is attracted, drives tripping mechanism to disconnect closure contact (S2-S1), and cut-out load power source plays the role of safeguard protection；
3rd, open-phase protection (L or N phase shortages)
Protector obtains electric work, (the cut-off in input terminal containing AC220V when power supply Li or Ni ends open circuit or loose contact Electricity), C2 terminal voltages are not enough to maintain Q1 conductings, and after Q1 cut-offs, through R16, D9 is sent to SCR1 trigger electrodes C5 terminal voltages, silicon-controlled to lead Logical, C5 terminal voltages are applied to L1 electromagnetic coils both ends through D7 moments, and coil, which is attracted, drives tripping mechanism to make closure contact (S2-S1) It disconnects, cut-out load power source plays the role of safeguard protection；
4th, overpressure protection (280V ± 10V)
Protector obtains electric work, inputs Li, when Ni terminal voltages are in pre-determined lower limit voltage, C5 terminal voltages are through current-limiting resistance R9 With R12 partial pressure less than U1A 2 foot voltages, 1 foot output low level, when voltage is in 280V ± 10V, 3 feet of U1A be more than or Equal to 2 foot voltages, 1 foot exports high level through D5, and D8 is sent to SCR1 trigger electrodes, controlled silicon conducting, and C5 terminal voltages are applied through D7 moments L1 electromagnetic coils both ends are added in, coil, which is attracted, drives tripping mechanism to disconnect closure contact (S2-S1), and cut-out load power source plays The effect of safeguard protection；
5th, protector plug overtemperature prote
Protector obtains electric work, when overtemperature protection device detects that protector plug temperature reaches preset temperature, C2 ends electricity Pressure is divided through R8, RT1 and R14, and when the 5 foot voltages of U1B are higher than 6 foot voltage, 7 feet export high level through D6, and D8 is sent to SCR1 Trigger electrode, controlled silicon conducting, C5 terminal voltages are applied to L1 electromagnetic coils both ends through D7 moments, and coil, which is attracted, drives tripping mechanism to make It is closed contact (S2, S1) to disconnect, cut-out load power source plays the role of safeguard protection.
The present invention provides a kind of novel earth leakage protective devices, it has：In the power supply of default-phase protection function, i.e. L or N-terminal Load supplying is cut off during disconnected or loose contact；Overpressure protection function, the protector under energized state, because supply voltage exceeds 280V Load supplying is cut off during ± 10V；Plug overheat protection function is cut off the power when that is, protector plug temperature reaches preset temperature.
It the above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come It says, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (4)

1. it is a kind of have power-off tripping and superpressure trip avoidance function protection plug, including amplifying circuit, buckle releaser, rectification circuit, Power supply instruction circuit for lamp, reduction voltage circuit, silicon-controlled, zero sequence current mutual inductor and ground line current mutual inductor, it is characterised in that：Also set There is open-phase protection circuit；
Electromagnetic coil of the open-phase protection circuit including buckle releaser, current-limiting resistance, shunt resistance, storage capacitor, the one or two pole Pipe and the second diode, the current-limiting resistance are arranged between storage capacitor anode and electromagnetic coil；First diode Anode connects storage capacitor, cathode connection electromagnetic coil；Second diode one end connection is silicon-controlled, other end connection shunting Resistance one end, shunt resistance other end connection storage capacitor anode；When zero firewire of feeder ear open circuit or loose contact, energy storage electricity Hold voltage to send to silicon-controlled trigger electrode, controlled silicon conducting through shunt resistance, the second diode, storage capacitor voltage is through the one or two Pole pipe moment is applied to electromagnetic coil both ends, and electromagnetic coil is attracted buckle releaser cut-out load power source, completes open-phase protection and entirely move Make；
It is additionally provided with superpressure detection circuit；
The superpressure detection circuit includes first voltage detector, the first divider resistance, the second divider resistance, third divider resistance With the 4th divider resistance, the pin 3 of the first voltage detector is connected between the first divider resistance and the second divider resistance, The pin 2 of the first voltage detector is connected between third divider resistance and the 4th divider resistance；The first partial pressure electricity Resistance is also connected with storage capacitor anode.
2. the protection plug according to claim 1 for having power-off tripping and superpressure trip avoidance function, it is characterised in that：The electricity Road further includes overtemperature detection circuit, and the overtemperature detection circuit includes second voltage detector, thermistor, the 5th divider resistance With the 6th divider resistance, the 5th divider resistance, thermistor and the 6th divider resistance are sequentially connected, the second voltage detector Pin 5 is connected between thermistor and the 6th divider resistance, second voltage detector pin 6 be connected to third divider resistance and Between 4th divider resistance.
3. the protection plug according to claim 1 for having power-off tripping and superpressure trip avoidance function, it is characterised in that：It is described Ground wire electrification indicating circuit is equipped between ground wire and zero curve.
4. the protection plug according to claim 3 for having power-off tripping and superpressure trip avoidance function, it is characterised in that：It is described The primary coil of zero sequence current mutual inductor is additionally provided with test circuit.
CN201610008359.2A 2015-01-28 2016-01-05 Has the protection plug of power-off tripping and superpressure trip avoidance function Active CN105490101B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201610847817.1A CN106299908B (en) 2015-01-28 2016-01-05 The protection plug for having power-off tripping and superpressure trip avoidance function
CN201610008359.2A CN105490101B (en) 2015-01-28 2016-01-05 Has the protection plug of power-off tripping and superpressure trip avoidance function

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN2015100444967 2015-01-28
CN201510044496.7A CN104659595A (en) 2015-01-28 2015-01-28 Protective plug with outage trip and overvoltage trip functions
CN201610008359.2A CN105490101B (en) 2015-01-28 2016-01-05 Has the protection plug of power-off tripping and superpressure trip avoidance function

Related Child Applications (1)

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CN105490101A CN105490101A (en) 2016-04-13
CN105490101B true CN105490101B (en) 2018-07-10

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CN201510044496.7A Pending CN104659595A (en) 2015-01-28 2015-01-28 Protective plug with outage trip and overvoltage trip functions
CN201510881789.0A Active CN105406292B (en) 2015-01-28 2015-01-28 Has the protection plug of power-off tripping
CN201610847817.1A Active CN106299908B (en) 2015-01-28 2016-01-05 The protection plug for having power-off tripping and superpressure trip avoidance function
CN201610008359.2A Active CN105490101B (en) 2015-01-28 2016-01-05 Has the protection plug of power-off tripping and superpressure trip avoidance function

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CN201510881789.0A Active CN105406292B (en) 2015-01-28 2015-01-28 Has the protection plug of power-off tripping
CN201610847817.1A Active CN106299908B (en) 2015-01-28 2016-01-05 The protection plug for having power-off tripping and superpressure trip avoidance function

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104659595A (en) * 2015-01-28 2015-05-27 余姚市嘉荣电子电器有限公司 Protective plug with outage trip and overvoltage trip functions
CN104953537A (en) * 2015-07-27 2015-09-30 福一开电气有限公司 Overload protection switching device
CN106849005B (en) * 2017-03-30 2018-11-06 乐清市诚富电器科技有限公司 A kind of intelligent leakage protector control circuit and control method
CN111509666B (en) * 2020-05-26 2023-03-31 广东顺德锐铂汇电子科技有限公司 Power supply electroless trip switch

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CN204441633U (en) * 2015-01-28 2015-07-01 余姚市嘉荣电子电器有限公司 Possesses the protection plug of power-off tripping operation and superpressure trip avoidance function
CN105406292A (en) * 2015-01-28 2016-03-16 余姚市嘉荣电子电器有限公司 Protection plug with power-off tripping function

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CN201846058U (en) * 2010-09-29 2011-05-25 厦门振泰成科技有限公司 Over-voltage/over-current protecting circuit
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CN204441633U (en) * 2015-01-28 2015-07-01 余姚市嘉荣电子电器有限公司 Possesses the protection plug of power-off tripping operation and superpressure trip avoidance function
CN105406292A (en) * 2015-01-28 2016-03-16 余姚市嘉荣电子电器有限公司 Protection plug with power-off tripping function
CN106299908A (en) * 2015-01-28 2017-01-04 余姚市嘉荣电子电器有限公司 Possesses the protection plug of power-off tripping operation and superpressure trip avoidance function

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CN105406292B (en) 2018-07-10
CN105406292A (en) 2016-03-16
CN104659595A (en) 2015-05-27
CN106299908A (en) 2017-01-04
CN105490101A (en) 2016-04-13
CN106299908B (en) 2019-07-12

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