CN201360136Y - Novel residual current operating device with grounding wire protection function - Google Patents

Novel residual current operating device with grounding wire protection function Download PDF

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Publication number
CN201360136Y
CN201360136Y CNU2009200022791U CN200920002279U CN201360136Y CN 201360136 Y CN201360136 Y CN 201360136Y CN U2009200022791 U CNU2009200022791 U CN U2009200022791U CN 200920002279 U CN200920002279 U CN 200920002279U CN 201360136 Y CN201360136 Y CN 201360136Y
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China
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resistance
capacitor
diode
anode
parallel connection
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Expired - Fee Related
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CNU2009200022791U
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Chinese (zh)
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王继杰
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Individual
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Individual
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Priority to CNU2009200022791U priority Critical patent/CN201360136Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model belongs to a novel residual current operating device with grounding wire protection function, which comprises a main power source wire and a tripping mechanism, a tripping coil L1, a zero sequence current mutual inductor 2, an electric leakage signal detecting circuit 3 and an auxiliary power source failure detecting circuit, wherein the auxiliary power source failure detecting circuit consists of a photoelectric coupler IC2, a triode Q1, and resistor-capacitors. By means of a power storage capacitor C4, when tripping caused by breakage of a neutral line inside an electric leakage circuit breaker of the residual current operating device happens, abnormal tripping and outage on a former-stage electric leakage circuit breaker (a main switch) can be avoided, thereby improving user-friendly degree of the residual current operating device.

Description

The residual current acting device of new band earth connection defencive function
Affiliated technical field
The utility model relates to a kind of residual current circuit breaker, particularly a kind of residual current circuit breaker of electronic type band earth connection defencive function.
Background technology
The residual current acting device (current mode residual current circuit breaker) of people's use at present can divide in pure electromagnetic type and electronic type according to structure.The residual current circuit breaker major part that China uses at present is the electronic type residual current circuit breaker; and its holding function of electronic type residual current circuit breaker is relevant with line voltage; in case line voltage breaks down, residual current circuit breaker does not just have protective effect during as two utmost point residual current circuit breaker neutral line (N line) breakthrough.The patent No. that Patent Office of the People's Republic of China is authorized has played in 2008200062243 patents and has solved this hidden danger, but there is a very big defective, as when N line breakthrough circuit breaker trip occurring, will makes upper level residual current circuit breaker (total lock) tripping operation, make outage completely, to people with the very big inconvenience of fork-like farm tool used in ancient China.
Summary of the invention
The utility model is to overcome above defective; the technical scheme that adopts is a kind of residual current acting device of new band earth connection defencive function; comprise: main power line, tripping mechanism 1, tripping coil L1, zero sequence current mutual inductor 2, electric leakage signal detecting circuit 3, described diode D 7Anode, capacitor C 3An end, capacitor C 1An end, piezo-resistance RV 1An end in parallel with main power source phase line (L line), diode D 7Negative terminal, diode D 6Negative terminal and tripping coil L 1An end parallel connection, capacitor C 3The other end and resistance R 3An end link capacitor C 1The other end and resistance R 1An end link piezo-resistance RV 1The other end, resistance R 1The other end, piezo-resistance RV 2An end, capacitor C 2An end, voltage-stabiliser tube DT 2Negative terminal, photoelectrical coupler IC 21 pin, diode D 2Anode, diode D 3Negative terminal in parallel with the power line neutral line (N line), capacitor C 2The other end and resistance R 2An end link resistance R 2The other end, piezo-resistance RV 2The other end, trigger tube ST 1An end in parallel with earth connection (PE line), trigger tube ST 1The other end and resistance R 5An end link resistance R 5The other end and voltage-stabiliser tube DT 2Anode, photoelectrical coupler IC 22 pin parallel connections, resistance R 3The other end and diode D 4Negative terminal, diode D 1The anode parallel connection, diode D 1Negative terminal, diode D 2Negative terminal, resistance R 4An end and diode D 5The anode parallel connection, diode D 5Negative terminal, diode D 6Anode and capacitor C 4The positive terminal parallel connection, capacitor C 4Negative pole end and diode D 4Anode, diode D 3Anode, resistance R 7An end, capacitor C 6Negative pole end, resistance R 8An end, resistance R 9An end, capacitor C 7An end, capacitor C 5Negative pole end, voltage-stabiliser tube DT 1Anode, controllable silicon SCR 1The cathode terminal parallel connection, controllable silicon SCR 1Anode tap and tripping coil L 1The other end link resistance R 7The other end and photoelectrical coupler IC 24 pin, capacitor C 6Positive terminal, voltage-stabiliser tube DT 3The negative terminal parallel connection, voltage-stabiliser tube DT 3Anode and resistance R 8The other end, triode Q 1The base stage parallel connection, triode Q 1Emitter and resistance R 9The other end, resistance R 10An end parallel connection, resistance R 10The other end and capacitor C 7The other end, controllable silicon SCR 1The trigger electrode parallel connection, triode Q 1Collector electrode and resistance R 6An end, resistance R 4The other end, capacitor C 5Positive terminal, voltage-stabiliser tube DT 1The negative terminal parallel connection, resistance R 6The other end and photoelectrical coupler IC 23 pin link.
Advantage of the present utility model; being that circuit is simple. cost is low. the defencive function of automatic trip outage when having reached electronic type residual current circuit breaker accessory power supply fault; and biggest advantage is when neutral line breakthrough is tripped; can not make upper level residual current circuit breaker (total lock) tripping operation outage, improve user's degree easy to use.
Description of drawings
Accompanying drawing is the utility model circuit theory diagrams
Embodiment
When the residual current acting device of new band earth connection defencive function of the present utility model was pressed the accompanying drawing defined and indicated wiring work, device was in normal creepage protection function operating state, and power supply is through capacitor C 3, resistance R 3Resistance-capacitance depressurization, diode D 1, D 2, D 3, D 4Give capacitor C after the bridge rectification of forming 4Charging, when interrupting as the neutral line at this moment, photoelectrical coupler IC 21 pin and 2 pin between voltage is just arranged, triode Q 1Emitter high level just occurs and trigger controllable silicon SCR 1, make controllable silicon SCR 1Conducting, capacitor C 4On electric energy through diode D 6, tripping coil L 1Discharge, tripping coil L 1, residual current circuit breaker tripping operation outage.When lacking line as the neutral line, power supply has L line and earth connection (PE line) to produce the loop, gives capacitor C after the resistance-capacitance depressurization rectification 4Charging, and photoelectrical coupler IC 21 pin and 2 pin between voltage appears, triode Q 1Emitter trigger controllable silicon SCR in high level 1Conducting, residual current circuit breaker tripping operation outage.
Because storage capacitor C 4Do usefulness, therefore device when the neutral line breakthrough trip over the ground leakage current seldom, reached the purpose that when this device of neutral line breakthrough trips the appearance of upper level residual current circuit breaker is tripped undesiredly.

Claims (1)

1. the residual current acting device of a new band earth connection defencive function comprises: main source line, tripping mechanism (1), tripping coil L 1, zero sequence current mutual inductor (2), electric leakage signal detecting circuit (3), it is characterized in that described diode D 7Anode, capacitor C 3An end, capacitor C 1An end, piezo-resistance RV 1An end and main power source line parallel mutually, diode D 7Negative terminal, diode D 6Negative terminal and tripping coil L 1An end parallel connection, capacitor C 3The other end and resistance R 3An end link capacitor C 1The other end and resistance R 1An end link piezo-resistance RV 1The other end, resistance R 1The other end, piezo-resistance RV 2An end, capacitor C 2An end, voltage-stabiliser tube DT 2Negative terminal, photoelectrical coupler IC 21 pin, diode D 2Anode, diode D 3Negative terminal in parallel with the main power source neutral line, capacitor C 2The other end and resistance R 2An end link resistance R 2The other end, piezo-resistance RV 2The other end, trigger tube ST 1An end in parallel with earth connection, trigger tube ST 1The other end and resistance R 5An end link resistance R 5The other end and voltage-stabiliser tube DT 2Anode, photoelectrical coupler IC 22 pin parallel connections, resistance R 3The other end and diode D 4Negative terminal, diode D 1The anode parallel connection, diode D 1Negative terminal, diode D 2Negative terminal, resistance R 4An end and diode D 5The anode parallel connection, diode D 5Negative terminal, diode D 6Anode and capacitor C 4The positive terminal parallel connection, capacitor C 4Negative pole end and diode D 4Anode, diode D 3Anode, resistance R 7An end, capacitor C 6Negative pole end, resistance R 8An end, resistance R 9An end, capacitor C 7An end, capacitor C 5Auspicious, the voltage-stabiliser tube DT of negative pole 1Anode, controllable silicon SCR 1The cathode terminal parallel connection, controllable silicon SCR 1Anode tap and tripping coil L 1The other end link resistance R 7The other end and photoelectrical coupler IC 24 pin, capacitor C 6Positive terminal, voltage-stabiliser tube DT 3The negative terminal parallel connection, voltage-stabiliser tube DT 3Anode and resistance R 8The other end, triode Q 1The base stage parallel connection, triode Q 1Emitter and resistance R 9The other end, resistance R 10An end parallel connection, resistance R 10The other end and capacitor C 7The other end, controllable silicon SCR 1The trigger electrode parallel connection, triode Q 1Collector electrode and resistance R 6An end, resistance R 4The other end, capacitor C 5Positive terminal, voltage-stabiliser tube DT 1The negative terminal parallel connection, resistance R 6The other end and photoelectrical coupler IC 23 pin link.
CNU2009200022791U 2009-01-12 2009-01-12 Novel residual current operating device with grounding wire protection function Expired - Fee Related CN201360136Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2009200022791U CN201360136Y (en) 2009-01-12 2009-01-12 Novel residual current operating device with grounding wire protection function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2009200022791U CN201360136Y (en) 2009-01-12 2009-01-12 Novel residual current operating device with grounding wire protection function

Publications (1)

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CN201360136Y true CN201360136Y (en) 2009-12-09

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CNU2009200022791U Expired - Fee Related CN201360136Y (en) 2009-01-12 2009-01-12 Novel residual current operating device with grounding wire protection function

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112436483A (en) * 2020-11-06 2021-03-02 江西百盈高新技术股份有限公司 Leakage protection circuit
CN117039708A (en) * 2023-10-07 2023-11-10 江苏安靠智能输电工程科技股份有限公司 Novel all-insulated handcart type switch cabinet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112436483A (en) * 2020-11-06 2021-03-02 江西百盈高新技术股份有限公司 Leakage protection circuit
CN117039708A (en) * 2023-10-07 2023-11-10 江苏安靠智能输电工程科技股份有限公司 Novel all-insulated handcart type switch cabinet
CN117039708B (en) * 2023-10-07 2024-01-05 江苏安靠智能输电工程科技股份有限公司 Novel all-insulated handcart type switch cabinet

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091209

Termination date: 20120112