ZA812829B - Apparatus for sensing short circult faults - Google Patents

Apparatus for sensing short circult faults

Info

Publication number
ZA812829B
ZA812829B ZA00812829A ZA812829A ZA812829B ZA 812829 B ZA812829 B ZA 812829B ZA 00812829 A ZA00812829 A ZA 00812829A ZA 812829 A ZA812829 A ZA 812829A ZA 812829 B ZA812829 B ZA 812829B
Authority
ZA
South Africa
Prior art keywords
faults
sensing short
circult
short circult
sensing
Prior art date
Application number
ZA00812829A
Inventor
F Pearson
H Lord
Original Assignee
Nat Res Dev
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 GB7939141A priority Critical patent/GB2065394B/en
Application filed by Nat Res Dev filed Critical Nat Res Dev
Priority to ZA00812829A priority patent/ZA812829B/en
Priority to AU70098/81A priority patent/AU7009881A/en
Publication of ZA812829B publication Critical patent/ZA812829B/en

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
    • H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
    • H02H3/382—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 both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0855—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load avoiding response to transient overloads, e.g. during starting
ZA00812829A 1979-11-12 1981-04-29 Apparatus for sensing short circult faults ZA812829B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB7939141A GB2065394B (en) 1979-11-12 1979-11-12 Apparatus for sensing short circuit faults
ZA00812829A ZA812829B (en) 1979-11-12 1981-04-29 Apparatus for sensing short circult faults
AU70098/81A AU7009881A (en) 1979-11-12 1981-05-04 Sensing short circuit faults

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB7939141A GB2065394B (en) 1979-11-12 1979-11-12 Apparatus for sensing short circuit faults
ZA00812829A ZA812829B (en) 1979-11-12 1981-04-29 Apparatus for sensing short circult faults
AU70098/81A AU7009881A (en) 1979-11-12 1981-05-04 Sensing short circuit faults

Publications (1)

Publication Number Publication Date
ZA812829B true ZA812829B (en) 1982-04-28

Family

ID=27155842

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00812829A ZA812829B (en) 1979-11-12 1981-04-29 Apparatus for sensing short circult faults

Country Status (3)

Country Link
AU (1) AU7009881A (en)
GB (1) GB2065394B (en)
ZA (1) ZA812829B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19741662C2 (en) * 1997-09-16 2001-03-08 Wiktor Silbermann Procedure for fully selective reserve protection in cable networks
GB2395377B (en) 2002-11-13 2006-02-01 Frdx Ltd Fault detection apparatus and method
CN102012474A (en) * 2010-09-20 2011-04-13 陶作存 Interphase short circuit pre-detection process for coal mine high voltage and low voltage power lines
CN102324723B (en) * 2011-09-21 2014-04-09 山东一统电器有限公司 Flameproof phase-sensitive short circuit protection feed switch and working method thereof
KR20200089059A (en) * 2019-01-16 2020-07-24 삼성전기주식회사 Apparatus and method for detecting wiring short of substrate

Also Published As

Publication number Publication date
GB2065394B (en) 1983-08-17
AU7009881A (en) 1982-11-11
GB2065394A (en) 1981-06-24

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