MY115956A - Circuit breaker - Google Patents

Circuit breaker

Info

Publication number
MY115956A
MY115956A MYPI95001286A MYPI19951286A MY115956A MY 115956 A MY115956 A MY 115956A MY PI95001286 A MYPI95001286 A MY PI95001286A MY PI19951286 A MYPI19951286 A MY PI19951286A MY 115956 A MY115956 A MY 115956A
Authority
MY
Malaysia
Prior art keywords
line
neutral
side terminal
terminal area
thyristor
Prior art date
Application number
MYPI95001286A
Inventor
Kunimoto Yoichi
Sawada Tomoyuki
Kitamura Takashi
Yokoyama Yoichi
Konishi Hirofumi
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Publication of MY115956A publication Critical patent/MY115956A/en

Links

Classifications

    • 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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/338—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers also responsive to wiring error, e.g. loss of neutral, break

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

CIRCUIT INTERRUPTION IS EXECUTED IN THE EVENT OF FAULTY CONNECTION OF A DISTRIBUTION LINE, THEREBY IMPROVING SAFETY. CONTACTS 3, WHICH ARE OPENED AND CLOSED BY DRIVE MECHANISM 4, ARE INSERTED IN A MAIN CURRENT PATH FORMED BETWEEN POWER-SUPPLY-SIDE TERMINAL AREA 1 AND LOAD-SIDE TERMINAL AREA 2. NEUTRAL-LINE POTENTIAL RESPONSE MEANS 10 ARE PROVIDED BETWEEN LEGS OF THE MAIN CURRENT PATH. THESE NEUTRAL-LINE POTENTIAL RESPONSE MEANS 10 ARE EQUIPPED WITH A SERIES CIRCUIT CONTAINING ENERGIZING COIL 12 AND THYRISTOR SCRL, WHILE RESISTOR R2, CAPACITOR CL, AND DIODE D2 ARE CONNECTED IN PARALLEL ACROSS THE GATE AND CATHODE OF THYRISTOR SCRI. FURTHERMORE, RESISTOR R2 IS CONNECTED THROUGH ZENER DIODE ZD TO MAIN-CURRENT-PATH NEUTRAL-LINE-SIDE LEAD N. IN THE EVENT OF FAULTY CONNECTION OF THE DISTRIBUTION LINE TO POWER-SUPPLY-SIDE TERMINAL AREA 1, A POTENTIAL DIFFERENCE IS GENERATED BETWEEN NEUTRAL-LINE-SIDE LEAD N AND GROUND CONNECTION AREA 7. AS A RESULT, ZENER DIODE ZD PASSES CURRENT, TURNING ON THYRISTOR SCRI AND OPENING CONTACTS 3. (FIG. 1)
MYPI95001286A 1994-11-15 1995-05-16 Circuit breaker MY115956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6281026A JP2992449B2 (en) 1994-11-15 1994-11-15 Circuit breaker

Publications (1)

Publication Number Publication Date
MY115956A true MY115956A (en) 2003-10-31

Family

ID=17633259

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI95001286A MY115956A (en) 1994-11-15 1995-05-16 Circuit breaker

Country Status (4)

Country Link
JP (1) JP2992449B2 (en)
CN (1) CN1046055C (en)
GB (1) GB2295284B (en)
MY (1) MY115956A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311177B (en) * 1996-03-13 2000-08-02 Crabtree Electrical Ind Ltd Residual current devices
GB2376360B (en) 2001-06-08 2005-08-24 Delta Electrical Ltd Measuring device
JP4931754B2 (en) * 2007-10-03 2012-05-16 三菱電機株式会社 Earth leakage breaker
JP5231061B2 (en) * 2008-03-27 2013-07-10 テンパール工業株式会社 Circuit breaker
JP2009245791A (en) * 2008-03-31 2009-10-22 Panasonic Electric Works Co Ltd Wiring instrument
JP5319949B2 (en) * 2008-03-31 2013-10-16 パナソニック株式会社 Wiring equipment
JP5166174B2 (en) * 2008-09-03 2013-03-21 テンパール工業株式会社 Circuit breaker
PL2567149T3 (en) * 2010-05-07 2015-12-31 Koninklijke Philips Nv Lighting replacing fluorescent lamps
CN102882227B (en) * 2012-09-14 2015-03-18 江苏兆伏新能源有限公司 High-power photovoltaic grid-connected inverter
WO2020026862A1 (en) * 2018-07-31 2020-02-06 パナソニックＩｐマネジメント株式会社 Control system and shut-off system
CN111509710B (en) * 2020-04-29 2022-01-18 广东电网有限责任公司韶关供电局 TN-C platform area electric leakage identification method, system, equipment and storage medium
EP4084251B1 (en) * 2020-11-13 2025-03-26 Huawei Digital Power Technologies Co., Ltd. Power source reverse connection prevention circuit, power distribution apparatus, and power supply and distribution system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4068276A (en) * 1976-07-14 1978-01-10 Interelectronics Corporation Protective system for electrical appliances
GB2135542B (en) * 1983-02-19 1986-11-05 Ashley Accessories Ltd Earth leakage circuit breaker
GB8331724D0 (en) * 1983-11-28 1984-01-04 B & R Electrical Prod Ltd Reverse polarity auto-tripping system
GB8332815D0 (en) * 1983-12-08 1984-01-18 Ashley Accessories Ltd Electrical accessories
US4598331A (en) * 1984-07-30 1986-07-01 Technology Research Corporation Ground fault current interrupter circuit with open neutral and ground lead protection
GB8710521D0 (en) * 1987-05-02 1987-06-03 Ashley Accessories Ltd Residual current circuit breaker
IE880341L (en) * 1988-02-08 1989-08-08 Patrick Ward Ground fault current interrupter circuit
GB2244398B (en) * 1990-05-25 1994-03-16 Mk Electric Ltd Electrical protection devices
IE930319A1 (en) * 1993-04-27 1994-11-02 Shakira Ltd Circuit for detecting a faulty mains neutral

Also Published As

Publication number Publication date
GB2295284B (en) 1999-02-03
HK1012129A1 (en) 1999-07-23
JPH08138523A (en) 1996-05-31
JP2992449B2 (en) 1999-12-20
GB9509342D0 (en) 1995-06-28
CN1118108A (en) 1996-03-06
GB2295284A (en) 1996-05-22
CN1046055C (en) 1999-10-27

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