WO1990009694A1 - Improvements in or related to circuit breakers used with electrical apparatus - Google Patents

Improvements in or related to circuit breakers used with electrical apparatus Download PDF

Info

Publication number
WO1990009694A1
WO1990009694A1 PCT/GB1989/000148 GB8900148W WO9009694A1 WO 1990009694 A1 WO1990009694 A1 WO 1990009694A1 GB 8900148 W GB8900148 W GB 8900148W WO 9009694 A1 WO9009694 A1 WO 9009694A1
Authority
WO
WIPO (PCT)
Prior art keywords
live
protection device
current
output
supply
Prior art date
Application number
PCT/GB1989/000148
Other languages
English (en)
French (fr)
Inventor
Douglas Sydney Knights
Original Assignee
B & R Electrical Plc
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
Priority to GB8719318A priority Critical patent/GB2208052B/en
Application filed by B & R Electrical Plc filed Critical B & R Electrical Plc
Priority to PCT/GB1989/000148 priority patent/WO1990009694A1/en
Priority to EP89903513A priority patent/EP0458783A1/en
Priority to JP89503218A priority patent/JPH04505243A/ja
Publication of WO1990009694A1 publication Critical patent/WO1990009694A1/en
Priority to DK911447A priority patent/DK144791D0/da

Links

Classifications

    • 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
    • H02H5/10—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 mechanical injury, e.g. rupture of line, breakage of earth connection

Definitions

  • RCCBs are designed to "trip" on the detection of earth leakage and they are often provided in the plug or an adapter attached to a supply cable of an electrical device or within an in-line-connector on the supply cable. In the event of the supply cable becoming severed and the live conductor contacting the earth conductor the RCCB would operate.
  • the appliance socket (10), or the connector (20), is permanently wired to the plug (1 ), and when plugged into a live supply socket current will flow in the live and neutral wires of the appliance cable, the live (or neutral) conductor carrying this current is arranged to flow through a transformer (6) having a secondary winding whose output is connected to the inverting input of an operational amplifier IC1 , thus all the time current is flowing to the appliance the operational amplifier output is low and the SCR1 does not trigger.

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)
PCT/GB1989/000148 1987-08-14 1989-02-14 Improvements in or related to circuit breakers used with electrical apparatus WO1990009694A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB8719318A GB2208052B (en) 1987-08-14 1987-08-14 Improvements in or related to circuit breakers used with electrical apparatus
PCT/GB1989/000148 WO1990009694A1 (en) 1987-08-14 1989-02-14 Improvements in or related to circuit breakers used with electrical apparatus
EP89903513A EP0458783A1 (en) 1987-08-14 1989-02-14 Improvements in or related to circuit breakers used with electrical apparatus
JP89503218A JPH04505243A (ja) 1987-08-14 1989-02-14 電気装置により使用される改良された回路遮断器
DK911447A DK144791D0 (da) 1987-08-14 1991-08-09 Effektafbryder til elektrisk apparat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8719318A GB2208052B (en) 1987-08-14 1987-08-14 Improvements in or related to circuit breakers used with electrical apparatus
PCT/GB1989/000148 WO1990009694A1 (en) 1987-08-14 1989-02-14 Improvements in or related to circuit breakers used with electrical apparatus

Publications (1)

Publication Number Publication Date
WO1990009694A1 true WO1990009694A1 (en) 1990-08-23

Family

ID=10622332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/000148 WO1990009694A1 (en) 1987-08-14 1989-02-14 Improvements in or related to circuit breakers used with electrical apparatus

Country Status (5)

Country Link
EP (1) EP0458783A1 (da)
JP (1) JPH04505243A (da)
DK (1) DK144791D0 (da)
GB (1) GB2208052B (da)
WO (1) WO1990009694A1 (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276991A (en) * 1993-03-22 1994-10-12 B & R Electrical Plc Protection circuit responsive to several sensors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389694A (en) * 1980-10-08 1983-06-21 Pemco Corporation Cable continuity monitoring system
US4639719A (en) * 1985-03-11 1987-01-27 General Signal Corporation Apparatus for monitoring circuit integrity
GB2200001A (en) * 1987-01-12 1988-07-20 Duraplug Elect Ltd Electric cable assembly with safety device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB815479A (en) * 1955-10-05 1959-06-24 Gen Electric Co Ltd Improvements in or relating to protective arrangements for electrical systems, such,for example, as tachometer generator systems
GB291008A (en) * 1927-05-23 1928-08-02 British Thomson Houston Co Ltd Improvements in and relating to control and protective systems
GB750136A (en) * 1951-08-06 1956-06-13 Licentia Gmbh A protective system for transportable electrical apparatus
FR1537781A (fr) * 1967-07-05 1968-08-30 Electronique & Automatisme Sa Dispositif détecteur d'incidents sur ligne ou câble bifilaire
US3727105A (en) * 1971-06-24 1973-04-10 Anthony S Mfg Co Fail-safe power cut-out device
US4562509A (en) * 1984-03-05 1985-12-31 Termofrost Sweden Ab Safety switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389694A (en) * 1980-10-08 1983-06-21 Pemco Corporation Cable continuity monitoring system
US4639719A (en) * 1985-03-11 1987-01-27 General Signal Corporation Apparatus for monitoring circuit integrity
GB2200001A (en) * 1987-01-12 1988-07-20 Duraplug Elect Ltd Electric cable assembly with safety device

Also Published As

Publication number Publication date
GB2208052B (en) 1991-08-07
GB8719318D0 (en) 1987-09-23
GB2208052A (en) 1989-02-15
EP0458783A1 (en) 1991-12-04
DK144791A (da) 1991-08-09
DK144791D0 (da) 1991-08-09
JPH04505243A (ja) 1992-09-10

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