GB537639A - Improvements in circuits for operating the indicating devices of electrical safety devices - Google Patents

Improvements in circuits for operating the indicating devices of electrical safety devices

Info

Publication number
GB537639A
GB537639A GB597440A GB597440A GB537639A GB 537639 A GB537639 A GB 537639A GB 597440 A GB597440 A GB 597440A GB 597440 A GB597440 A GB 597440A GB 537639 A GB537639 A GB 537639A
Authority
GB
United Kingdom
Prior art keywords
devices
circuits
operating
electrical safety
safety devices
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
GB597440A
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.)
THOMAS HAYES PETCH JR
British Thomson Houston Co Ltd
Original Assignee
THOMAS HAYES PETCH JR
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 THOMAS HAYES PETCH JR, British Thomson Houston Co Ltd filed Critical THOMAS HAYES PETCH JR
Priority to GB597440A priority Critical patent/GB537639A/en
Publication of GB537639A publication Critical patent/GB537639A/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

537,639. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., and PETCH, T. H. April 3, 1940, No. 5974. [Class 38 (v)] The operation of any one of a number of safety devices having contacts A ... F in series with a contactor coil or no-volt release X of a circuit-breaker, is indicated by non-self resetting indicators a ... f connected as shown so that if, say, D operates, the indicators d ... f operate, so showing that D was the device in question, and regardless of whether or not the devices A ... F are self-resetting.
GB597440A 1940-04-03 1940-04-03 Improvements in circuits for operating the indicating devices of electrical safety devices Expired GB537639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB597440A GB537639A (en) 1940-04-03 1940-04-03 Improvements in circuits for operating the indicating devices of electrical safety devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB597440A GB537639A (en) 1940-04-03 1940-04-03 Improvements in circuits for operating the indicating devices of electrical safety devices

Publications (1)

Publication Number Publication Date
GB537639A true GB537639A (en) 1941-06-30

Family

ID=9806092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB597440A Expired GB537639A (en) 1940-04-03 1940-04-03 Improvements in circuits for operating the indicating devices of electrical safety devices

Country Status (1)

Country Link
GB (1) GB537639A (en)

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