GB1360005A - Overcurrent protective device - Google Patents

Overcurrent protective device

Info

Publication number
GB1360005A
GB1360005A GB4833273A GB4833273A GB1360005A GB 1360005 A GB1360005 A GB 1360005A GB 4833273 A GB4833273 A GB 4833273A GB 4833273 A GB4833273 A GB 4833273A GB 1360005 A GB1360005 A GB 1360005A
Authority
GB
United Kingdom
Prior art keywords
output
sources
current
currents
substantially equal
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
GB4833273A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 claimed from US35517A external-priority patent/US3689801A/en
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1360005A publication Critical patent/GB1360005A/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
    • H02H3/08—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 excess current
    • H02H3/083—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 excess current for three-phase systems

Landscapes

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

Abstract

1360005 Protective arrangements WESTINGHOUSE ELECTRIC CORP 20 April 1971 [7 May 1970 (2)] 48332/73 Divided out of 1360004 Heading H2K A protective arrangement includes an "auctioneering" circuit for obtaining a unidirectional output current which is substantially equal to the output current of only one of a plurality of unidirectional current sources having output terminals connected in a series circuit. In Fig. 5 each of the sources CCS1 ... CCS3 is shunted by diode BM4 ... RM6 reversely poled with respect to the currents I 1 ...I 3 of the other sources, the output current I s being substantially equal to only the smallest of the currents I 1 ...I 3 . Zener diodes Z100 ... Z102 may be provided. In another arrangement, Figs. 1 to 4 (not shown) which is that of Specification 1,360,004, the unidirectional current sources are bridge rectifiers connected by intermediate transformers to current transformers in a three phase circuit, the output from the rectifier being substantially equal to only the highest of the output currents from the rectifiers.
GB4833273A 1970-05-07 1971-04-20 Overcurrent protective device Expired GB1360005A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3553170A 1970-05-07 1970-05-07
US35517A US3689801A (en) 1970-05-07 1970-05-07 Circuit breaker including improved current auctioneering circuit

Publications (1)

Publication Number Publication Date
GB1360005A true GB1360005A (en) 1974-07-17

Family

ID=26712192

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1006371A Expired GB1360004A (en) 1970-05-07 1971-04-20 Overcurrent protective device
GB4833273A Expired GB1360005A (en) 1970-05-07 1971-04-20 Overcurrent protective device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1006371A Expired GB1360004A (en) 1970-05-07 1971-04-20 Overcurrent protective device

Country Status (2)

Country Link
BR (1) BR7102751D0 (en)
GB (2) GB1360004A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58172928A (en) * 1982-04-01 1983-10-11 株式会社大隈鐵工所 Device for monitoring motor
US4513342A (en) * 1983-01-31 1985-04-23 General Electric Company Current-squared-time (i2 t) protection system

Also Published As

Publication number Publication date
BR7102751D0 (en) 1973-04-17
GB1360004A (en) 1974-07-17

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Legal Events

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