GB1364721A - Apparatus for protecting a power supply line - Google Patents

Apparatus for protecting a power supply line

Info

Publication number
GB1364721A
GB1364721A GB5536571A GB5536571A GB1364721A GB 1364721 A GB1364721 A GB 1364721A GB 5536571 A GB5536571 A GB 5536571A GB 5536571 A GB5536571 A GB 5536571A GB 1364721 A GB1364721 A GB 1364721A
Authority
GB
United Kingdom
Prior art keywords
fuse
relay
circuit
open
signal
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB5536571A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of GB1364721A publication Critical patent/GB1364721A/en
Expired legal-status Critical Current

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
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/046—Signalling the blowing of a fuse

Landscapes

  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1364721 Protective arrangements COMPAGNIE DES COMPTEURS 29 Nov 1971 [2 Dec 1970] 55365/71 Heading H2K In a protective arrngement in which the incorrect operation of a fault sensing device M, e.g. an impedance relay or undervoltage relay, due to the blowing of a fuse FPa ... FPc is prevented by a first detector device P responsive to an open-circuit condition of a fuse, a second detector device DA is provided and responds to currents down circuit of the fuses to provide a signal in the period taken by a fuse to melt before the device P can become fully effective. The device P may be that of Fig. 4 of Specification 1,302,303 and with the device DA is connected to an OR-gate OU1 so that a signal from either device causes a relay R1 to open its contacts r11, r12 to prevent the device M causing the opening of a circuit-breaker D.
GB5536571A 1970-12-02 1971-11-29 Apparatus for protecting a power supply line Expired GB1364721A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7043346A FR2116261B1 (en) 1970-12-02 1970-12-02

Publications (1)

Publication Number Publication Date
GB1364721A true GB1364721A (en) 1974-08-29

Family

ID=9065087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5536571A Expired GB1364721A (en) 1970-12-02 1971-11-29 Apparatus for protecting a power supply line

Country Status (8)

Country Link
AU (1) AU468230B2 (en)
BE (1) BE775403A (en)
CH (1) CH559982A5 (en)
DE (1) DE2159788A1 (en)
FR (1) FR2116261B1 (en)
GB (1) GB1364721A (en)
IT (1) IT942907B (en)
SE (1) SE371535B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516616C1 (en) * 1995-04-25 1997-01-16 Siemens Ag Arrangement with a line outlet connected to an electrical power supply network via a circuit breaker with at least one consumer and with an undervoltage protection arrangement
GB2339350A (en) * 1998-06-18 2000-01-19 Gec Alsthom Ltd Countering undesired operation of parallel feeder directional overcurrent relays

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516616C1 (en) * 1995-04-25 1997-01-16 Siemens Ag Arrangement with a line outlet connected to an electrical power supply network via a circuit breaker with at least one consumer and with an undervoltage protection arrangement
GB2339350A (en) * 1998-06-18 2000-01-19 Gec Alsthom Ltd Countering undesired operation of parallel feeder directional overcurrent relays
US6307723B1 (en) 1998-06-18 2001-10-23 Alstom Uk Ltd. Parallel-feeder directional overcurrent protection

Also Published As

Publication number Publication date
IT942907B (en) 1973-04-02
AU3633771A (en) 1973-06-21
CH559982A5 (en) 1975-03-14
FR2116261B1 (en) 1973-11-23
BE775403A (en) 1972-05-16
SE371535B (en) 1974-11-18
FR2116261A1 (en) 1972-07-13
DE2159788A1 (en) 1972-06-08
AU468230B2 (en) 1976-01-08

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees