GB545982A - Improvements in circuits for operating electrical indicating devices - Google Patents

Improvements in circuits for operating electrical indicating devices

Info

Publication number
GB545982A
GB545982A GB474941A GB474941A GB545982A GB 545982 A GB545982 A GB 545982A GB 474941 A GB474941 A GB 474941A GB 474941 A GB474941 A GB 474941A GB 545982 A GB545982 A GB 545982A
Authority
GB
United Kingdom
Prior art keywords
contacts
circuits
indicating devices
operating electrical
electrical indicating
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
GB474941A
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.)
HUGH WILLIAM CONWAY Ltd
British Thomson Houston Co Ltd
Original Assignee
HUGH WILLIAM CONWAY Ltd
British Thomson Houston Co 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 HUGH WILLIAM CONWAY Ltd, British Thomson Houston Co Ltd filed Critical HUGH WILLIAM CONWAY Ltd
Priority to GB474941A priority Critical patent/GB545982A/en
Publication of GB545982A publication Critical patent/GB545982A/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

Abstract

545,982. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., and LIDDIARD, H. W. C. April 9, 1941, No. 4749. [Class 38 (v)] The contacts A ... F of a number of safety devices are connected in series with the contact or-operating coil X or low-volt release of a circuit-breaker so as to de-energize the latter if any one or more of the devices operates. Each pair of contacts is shunted by the coil a ... f of a relatively high impedance relay, the contacts a<SP>1</SP> &c. of which, when closed, energize the coils of indicators a<SP>11</SP> &c. which have to be reset after operation.
GB474941A 1941-04-09 1941-04-09 Improvements in circuits for operating electrical indicating devices Expired GB545982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB474941A GB545982A (en) 1941-04-09 1941-04-09 Improvements in circuits for operating electrical indicating devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB474941A GB545982A (en) 1941-04-09 1941-04-09 Improvements in circuits for operating electrical indicating devices

Publications (1)

Publication Number Publication Date
GB545982A true GB545982A (en) 1942-06-22

Family

ID=9783057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB474941A Expired GB545982A (en) 1941-04-09 1941-04-09 Improvements in circuits for operating electrical indicating devices

Country Status (1)

Country Link
GB (1) GB545982A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576574A (en) * 1948-09-29 1951-11-27 Cochran Emilienne Fault indicating system for control circuits
US2614160A (en) * 1951-07-28 1952-10-14 Gen Electric Indicating system
US2719966A (en) * 1951-11-01 1955-10-04 Electric Controller & Mfg Co Electronic annunciator
US2736009A (en) * 1956-02-21 Lilzlj
GB2162670A (en) * 1983-08-27 1986-02-05 Hunslet Monitoring system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736009A (en) * 1956-02-21 Lilzlj
US2576574A (en) * 1948-09-29 1951-11-27 Cochran Emilienne Fault indicating system for control circuits
US2614160A (en) * 1951-07-28 1952-10-14 Gen Electric Indicating system
US2719966A (en) * 1951-11-01 1955-10-04 Electric Controller & Mfg Co Electronic annunciator
GB2162670A (en) * 1983-08-27 1986-02-05 Hunslet Monitoring system

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