CN105490101A - Protection plug with power-off tripping and overvoltage tripping functions - Google Patents

Protection plug with power-off tripping and overvoltage tripping functions Download PDF

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Publication number
CN105490101A
CN105490101A CN201610008359.2A CN201610008359A CN105490101A CN 105490101 A CN105490101 A CN 105490101A CN 201610008359 A CN201610008359 A CN 201610008359A CN 105490101 A CN105490101 A CN 105490101A
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CN
China
Prior art keywords
circuit
divider resistance
tripping
power
resistance
Prior art date
Application number
CN201610008359.2A
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Chinese (zh)
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CN105490101B (en
Inventor
钱加灿
Original Assignee
余姚市嘉荣电子电器有限公司
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Publication date
Priority to CN2015100444967 priority Critical
Priority to CN201510044496.7A priority patent/CN104659595A/en
Application filed by 余姚市嘉荣电子电器有限公司 filed Critical 余姚市嘉荣电子电器有限公司
Priority to CN201610008359.2A priority patent/CN105490101B/en
Publication of CN105490101A publication Critical patent/CN105490101A/en
Application granted granted Critical
Publication of CN105490101B publication Critical patent/CN105490101B/en

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/665Structural association with built-in electrical component with built-in electronic circuit
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/665Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6666Structural association with built-in electrical component with built-in electronic circuit with built-in overvoltage protection
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/665Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6683Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/70Structural association with built-in electrical component with built-in switch
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/70Structural association with built-in electrical component with built-in switch
    • H01R13/713Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/70Structural association with built-in electrical component with built-in switch
    • H01R13/713Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H01R13/7137Structural association with built-in electrical component with built-in switch the switch being a safety switch with thermal interrupter
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20Emergency 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24Emergency 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
    • H02H3/253Emergency 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04Emergency 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04Emergency 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
    • H02H5/042Emergency 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 invention discloses a protection plug with power-off tripping and overvoltage tripping functions. The protection plug comprises an amplifying circuit, a release, a rectifying circuit, a power indicator light circuit, a step-down circuit, a thyristor, a zero sequence current transformer, a ground wire current transformer and an open-phase protection circuit. The invention provides a novel leakage protection device, which comprises an open-phase protection function, namely cutting off load power supply when an L or N end is in power interruption or poor contact; an overvoltage protection function, namely cutting off the load power supply by a protector in a power-up state when a power supply voltage exceeds 280V+/-10V; and a plug over-temperature protection function, namely cutting off the power supply when the temperature of the protector plug reaches a preset temperature.

Description

Possesses the protection plug of power-off tripping operation and superpressure trip avoidance function
Technical field
The present invention relates to Electrical Safety resist technology field, especially relate to the protection plug possessing power-off tripping operation and superpressure trip avoidance function.
Background technology
Existing electric leakage protection technology is zero line (N) mainly, phase line (L) is entirely made earth leakage protective device through zero-sequence mutual inductance line simultaneously and is used, and ground wire electrified detection (voltage detecting and current detecting), this type of technology is all based upon supply voltage the basis of continued power must can provide corresponding defencive function, if when just meeting ground wire electrification or machine insulation appearance exception when zero-line open-circuit or the loose contact of electric power system, protector parting system causes the dropout that cannot reset because of mechanical self-latching, ground wire electrification voltage or make machine charged because of the leakage current of insulation damages, if cause electric shock behavior after human body touches, for solving this type of abnormal electrical power supply phenomenon, market also there is power-off trip protection device, because this type of protector is, by electric power system, solenoid is continued adhesive, the tripping mechanism closing of contact is made to reach continued power object, when electric power system power-off or phase shortage, solenoid because of cannot adhesive cause protector cannot powering load to reach protection philosophy, the drawback of this protected mode is: solenoid continued power causes coil heating, long-time serious warming-up effect protector useful life and there is potential safety hazard, under extreme condition, protector will lose defencive function and cause serious consequence.
Summary of the invention
(1) technical problem that will solve
Object of the present invention will overcome above-mentioned shortcoming exactly, aims to provide a kind of protection plug possessing power-off tripping operation and superpressure trip avoidance function.
(2) technical scheme
For solving the problem, the present invention proposes a kind of protection plug possessing power-off tripping operation and superpressure trip avoidance function, comprise amplifying circuit, release, rectification circuit, power supply indicator circuit, reduction voltage circuit, controllable silicon, zero sequence current mutual inductor and ground line current instrument transformer, be also provided with open-phase protection circuit;
Described open-phase protection circuit comprises solenoid, current-limiting resistance, shunt resistance, storage capacitor, the first diode, second diode of release, and described current-limiting resistance is arranged between storage capacitor positive pole and solenoid; The positive pole of described first diode connects storage capacitor, and negative pole connects solenoid; Described first diode is connected between controllable silicon and solenoid; Described second diode one end connects controllable silicon, and the other end connects shunt resistance one end, and the shunt resistance other end connects storage capacitor positive pole;
This circuit is also provided with superpressure testing circuit.
Further, described superpressure testing circuit comprises the first voltage detector, the first divider resistance, the second divider resistance, the 3rd divider resistance and the 4th divider resistance, the pin 3 of described first voltage detector is connected between the first divider resistance and the second divider resistance, and the pin 2 of described first voltage detector is connected between the 3rd divider resistance and the 4th divider resistance; Described first divider resistance also connects storage capacitor positive pole.
Further, this circuit also comprises overtemperature testing circuit, described overtemperature testing circuit comprises the second voltage detector, thermistor, the 5th divider resistance and the 6th divider resistance, 5th divider resistance, thermistor are connected successively with the 6th divider resistance, described second voltage detector pin 5 is connected between thermistor and the 6th divider resistance, and the second voltage detector pin 6 is connected between the 3rd divider resistance and the 4th divider resistance.
Further, ground wire electrification indicating circuit is provided with between described ground wire and zero line.
Further, the primary coil of described zero sequence current mutual inductor is also provided with test circuit.
(3) beneficial effect
Compared with prior art, the present invention has the following advantages: the invention provides a kind of novel earth leakage protective device, it has: default-phase protection function, and namely L or N holds when power failure or loose contact and cut off load supplying; Overpressure protection function, the protector under "on" position, because cutting off load supplying when supply power voltage exceeds 280V ± 10V; Plug overheat protection function, cuts off the electricity supply when namely protector plug temperature reaches preset temperature.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram possessing the protection plug of power-off tripping operation and superpressure trip avoidance function of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, the present invention proposes a kind of protection plug possessing power-off tripping operation and superpressure trip avoidance function, comprise amplifying circuit, release S1-S2, rectification circuit, power supply indicator circuit, reduction voltage circuit, controllable silicon SCR 1, zero sequence current mutual inductor ZCT1 and ground line current instrument transformer ZCT2, be also provided with open-phase protection circuit; Wherein amplifying circuit is earth leakage protective chip U2, and rectification circuit is diode D1, D2, and power supply indicator circuit is made up of LED 1 and resistance R3, and reduction voltage circuit is dropping resistor R2;
Described open-phase protection circuit comprises solenoid L1, the current-limiting resistance R15 of release, shunt resistance R16, storage capacitor C5, the first diode D7, the second diode D9D3, and described current-limiting resistance R15 is arranged between storage capacitor C5 positive pole and solenoid L1; The positive pole of described first diode D7 connects storage capacitor C5, and negative pole connects solenoid L1; Described first diode D7 is connected between controllable silicon SCR 1 and solenoid L1; Described second diode D9 one end connects controllable silicon SCR 1, and the other end connects shunt resistance R16 one end, and the shunt resistance R16 other end connects storage capacitor C5 positive pole;
This circuit is also provided with superpressure testing circuit.
Described superpressure testing circuit comprises the first voltage detector U1A, the first divider resistance R9, the second divider resistance R12, the 3rd divider resistance R7 and the 4th divider resistance R13, the pin 3 of described first voltage detector U1A is connected between the first divider resistance R9 and the second divider resistance R12, and the pin 2 of described first voltage detector U1A is connected between the 3rd divider resistance R7 and the 4th divider resistance R13; Described first divider resistance R9 also connects storage capacitor C5 positive pole.
This circuit also comprises overtemperature testing circuit, described overtemperature testing circuit comprises the second voltage detector U1B, thermistor RT, the 5th divider resistance R8 and the 6th divider resistance R14,5th divider resistance R8, thermistor RT are connected successively with the 6th divider resistance R14, described second voltage detector U1B pin 5 is connected between thermistor RT and the 6th divider resistance R14, and the second voltage detector U1B pin 6 is connected between the 3rd divider resistance R7 and the 4th divider resistance R13.
Be provided with ground wire electrification indicating circuit between described ground wire and zero line, change electric routing capacitance C1, resistance R1, neon lamp X1 forms.
The primary coil of described zero sequence current mutual inductor ZCT1 is also provided with test circuit, and test circuit is made up of button switch K 1, resistance R6.
The operation principle of this circuit is as follows:
1, load zero, phase line earth leakage protective
After protector plug access 220V input power, pressure presses return unit switch, and release S1-S2 is closed; indicator light LED1 lights, and supply voltage is through D1 rectification, and R15 current limliting is charged to C5 capacitor; C5 terminal voltage through the first diode D7 to solenoid L1, electricity when controllable silicon SCR 1 provides protection.Controllable silicon obtains electricity and is in protection detected state; Meanwhile, electric current is through resistance R2 current limliting, and C2 capacitor filtering is powered to U1A, U1B, U2, and protector obtains electricity work (this process hereinafter referred: protector obtains electricity work); When load end (output) Lo or No arbitrary end exports electric leakage, zero sequence current mutual inductance coil ZCT1 exports induced voltage, 1 and 2 pin that U2 detects drive circuit are sent in one end after ZCT1, when leakage current reaches preset value, 7 pin export high level through D4, D8 is to control machines pole, controlled silicon conducting, C5 terminal voltage is applied to L1 solenoid two ends instantaneously through D7, coil adhesive drives tripping mechanism that closing contact (S2-S1) is disconnected, and cuts off the effect that load power source plays safeguard protection;
2, earth wire charged protecting (Ei end)
Protector obtains electricity work, ground wire electrification electric current flows out Eo end through Ei, its induction coil ZCT2 be through on E line exports induced voltage, 1 and 2 pin of U2 are delivered on one tunnel respectively after ZCT1, when leakage current reaches preset value, 7 pin of U2 export high level through D4, D8 delivers to SCR1 trigger electrode, controlled silicon conducting, C5 terminal voltage is applied to L1 solenoid two ends instantaneously through D7, coil adhesive drives tripping mechanism that closing contact (S2-S1) is disconnected, and cuts off the effect that load power source plays safeguard protection;
3, open-phase protection (L or N phase shortage)
Protector obtains electricity work, when Li or Ni that power holds open circuit or loose contact (containing AC220V input interruption of power supply), C2 terminal voltage is not enough to maintain Q1 conducting, after Q1 cut-off, C5 terminal voltage delivers to SCR1 trigger electrode through R16, D9, controlled silicon conducting, C5 terminal voltage is applied to L1 solenoid two ends instantaneously through D7, and coil adhesive drives tripping mechanism that closing contact (S2-S1) is disconnected, and cuts off the effect that load power source plays safeguard protection;
4, overpressure protection (280V ± 10V)
Protector obtains electricity work, input Li, when Ni terminal voltage is in pre-determined lower limit voltage, C5 terminal voltage is through current-limiting resistance R9 and the R12 dividing potential drop 2 pin voltages lower than U1A, 1 pin output low level, when voltage is in 280V ± 10V, 3 pin of U1A are more than or equal to 2 pin voltages, 1 pin exports high level through D5, D8 delivers to SCR1 trigger electrode, controlled silicon conducting, and C5 terminal voltage is applied to L1 solenoid two ends instantaneously through D7, coil adhesive drives tripping mechanism that closing contact (S2-S1) is disconnected, and cuts off the effect that load power source plays safeguard protection;
5, protector plug overtemperature prote
Protector obtains electricity work; when overtemperature protection device detects that protector plug temperature reaches preset temperature, C2 terminal voltage is through R8, RT1 and R14 dividing potential drop; when the 5 pin voltages of U1B are higher than 6 pin voltage; 7 pin export high level and deliver to SCR1 trigger electrode through D6, D8, controlled silicon conducting; C5 terminal voltage is applied to L1 solenoid two ends instantaneously through D7; coil adhesive drives tripping mechanism that closing contact (S2, S1) is disconnected, and cuts off the effect that load power source plays safeguard protection.
The invention provides a kind of novel earth leakage protective device, it has: default-phase protection function, and namely L or N holds when power failure or loose contact and cut off load supplying; Overpressure protection function, the protector under "on" position, because cutting off load supplying when supply power voltage exceeds 280V ± 10V; Plug overheat protection function, cuts off the electricity supply when namely protector plug temperature reaches preset temperature.
Below be only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (5)

1. one kind possesses the protection plug of power-off tripping operation and superpressure trip avoidance function, comprise amplifying circuit, release, rectification circuit, power supply indicator circuit, reduction voltage circuit, controllable silicon, zero sequence current mutual inductor and ground line current instrument transformer, it is characterized in that: be also provided with open-phase protection circuit;
Described open-phase protection circuit comprises the solenoid of release, current-limiting resistance, shunt resistance, storage capacitor, the first diode and the second diode, and described current-limiting resistance is arranged between storage capacitor positive pole and solenoid; The positive pole of described first diode connects storage capacitor, and negative pole connects solenoid; Described first diode is connected between controllable silicon and solenoid; Described second diode one end connects controllable silicon, and the other end connects shunt resistance one end, and the shunt resistance other end connects storage capacitor positive pole;
This circuit is also provided with superpressure testing circuit.
2. the protection plug possessing power-off tripping operation and superpressure trip avoidance function according to claim 1, it is characterized in that: described superpressure testing circuit comprises the first voltage detector, the first divider resistance, the second divider resistance, the 3rd divider resistance and the 4th divider resistance, the pin 3 of described first voltage detector is connected between the first divider resistance and the second divider resistance, and the pin 2 of described first voltage detector is connected between the 3rd divider resistance and the 4th divider resistance; Described first divider resistance also connects storage capacitor positive pole.
3. the protection plug possessing power-off tripping operation and superpressure trip avoidance function according to claim 1; it is characterized in that: this circuit also comprises overtemperature testing circuit; described overtemperature testing circuit comprises the second voltage detector, thermistor, the 5th divider resistance and the 6th divider resistance; 5th divider resistance, thermistor are connected successively with the 6th divider resistance; described second voltage detector pin 5 is connected between thermistor and the 6th divider resistance, and the second voltage detector pin 6 is connected between the 3rd divider resistance and the 4th divider resistance.
4. the protection plug possessing power-off tripping operation and superpressure trip avoidance function according to claim 1 and 2, is characterized in that: be provided with ground wire electrification indicating circuit between described ground wire and zero line.
5. the protection plug possessing power-off tripping operation and superpressure trip avoidance function according to claim 4, is characterized in that: the primary coil of described zero sequence current mutual inductor is also 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 CN105490101B (en)

Priority Applications (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

Applications Claiming Priority (2)

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

Related Child Applications (1)

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

Publications (2)

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

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Family Applications (4)

Application Number Title Priority Date Filing Date
CN201510044496.7A CN104659595A (en) 2015-01-28 2015-01-28 Protective plug with outage trip and overvoltage trip functions
CN201510881789.0A 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 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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Application Number Title Priority Date Filing Date
CN201510044496.7A CN104659595A (en) 2015-01-28 2015-01-28 Protective plug with outage trip and overvoltage trip functions
CN201510881789.0A 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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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CN2120385U (en) * 1992-05-23 1992-10-28 潘阔海 Air switch with break and open-phase protection
CN201838980U (en) * 2009-11-25 2011-05-18 云南建工第五建设有限公司 Open phase leakage switch
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
CN203690888U (en) * 2014-02-20 2014-07-02 余姚市嘉荣电子电器有限公司 Electric leakage protection plug
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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JP2000102158A (en) * 1998-07-24 2000-04-07 Fuji Electric Co Ltd Earth leakage circuit breaker

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Publication number Priority date Publication date Assignee Title
CN2120385U (en) * 1992-05-23 1992-10-28 潘阔海 Air switch with break and open-phase protection
CN201838980U (en) * 2009-11-25 2011-05-18 云南建工第五建设有限公司 Open phase leakage switch
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
CN203690888U (en) * 2014-02-20 2014-07-02 余姚市嘉荣电子电器有限公司 Electric leakage protection plug
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN105406292B (en) * 2015-01-28 2018-07-10 余姚市嘉荣电子电器有限公司 Has the protection plug of power-off tripping

Also Published As

Publication number Publication date
CN106299908A (en) 2017-01-04
CN106299908B (en) 2019-07-12
CN105406292A (en) 2016-03-16
CN105490101B (en) 2018-07-10
CN104659595A (en) 2015-05-27
CN105406292B (en) 2018-07-10

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