CA960754A - Circuit for detecting phase unbalance in a three phase supply - Google Patents

Circuit for detecting phase unbalance in a three phase supply

Info

Publication number
CA960754A
CA960754A CA160,071A CA160071A CA960754A CA 960754 A CA960754 A CA 960754A CA 160071 A CA160071 A CA 160071A CA 960754 A CA960754 A CA 960754A
Authority
CA
Canada
Prior art keywords
phase
circuit
unbalance
detecting
supply
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
CA160,071A
Other languages
English (en)
Other versions
CA160071S (en
Inventor
David R. Boothman
David W. Nutt
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.)
General Electric Canada Co
Original Assignee
Canadian General Electric 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 Canadian General Electric Co Ltd filed Critical Canadian General Electric Co Ltd
Priority to CA160,071A priority Critical patent/CA960754A/en
Priority to FR7336271A priority patent/FR2212667A1/fr
Priority to GB4757773A priority patent/GB1450694A/en
Priority to DE19732351159 priority patent/DE2351159A1/de
Priority to JP11542073A priority patent/JPS4997248A/ja
Application granted granted Critical
Publication of CA960754A publication Critical patent/CA960754A/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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
CA160,071A 1972-12-28 1972-12-28 Circuit for detecting phase unbalance in a three phase supply Expired CA960754A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA160,071A CA960754A (en) 1972-12-28 1972-12-28 Circuit for detecting phase unbalance in a three phase supply
FR7336271A FR2212667A1 (OSRAM) 1972-12-28 1973-10-10
GB4757773A GB1450694A (en) 1972-12-28 1973-10-11 Circuit for detecting phase unbalance in a three phase supply
DE19732351159 DE2351159A1 (de) 1972-12-28 1973-10-11 Schaltung zum feststellen einer unsymmetrie an einer dreiphasigen energiequelle
JP11542073A JPS4997248A (OSRAM) 1972-12-28 1973-10-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA160,071A CA960754A (en) 1972-12-28 1972-12-28 Circuit for detecting phase unbalance in a three phase supply

Publications (1)

Publication Number Publication Date
CA960754A true CA960754A (en) 1975-01-07

Family

ID=4095401

Family Applications (1)

Application Number Title Priority Date Filing Date
CA160,071A Expired CA960754A (en) 1972-12-28 1972-12-28 Circuit for detecting phase unbalance in a three phase supply

Country Status (5)

Country Link
JP (1) JPS4997248A (OSRAM)
CA (1) CA960754A (OSRAM)
DE (1) DE2351159A1 (OSRAM)
FR (1) FR2212667A1 (OSRAM)
GB (1) GB1450694A (OSRAM)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2810046C2 (de) * 1978-03-08 1980-02-07 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren und Vorrichtung zur Messung von elektrischen Strömen und/oder Spannungen in einer Mehrzahl von Strom- bzw. Spannungskreisen
CH632108A5 (en) * 1978-07-14 1982-09-15 Sprecher & Schuh Ag Electrical circuit for simulating the thermal behaviour of a three-phase electrical apparatus or machine
FR2696592B1 (fr) * 1992-10-05 1994-12-02 Merlin Gerin Déclencheur électronique comportant une protection terre.
WO2025043495A1 (zh) * 2023-08-29 2025-03-06 西门子股份公司 多相电流平衡状态表示方法、装置、电子设备和存储介质

Also Published As

Publication number Publication date
JPS4997248A (OSRAM) 1974-09-13
GB1450694A (en) 1976-09-22
FR2212667A1 (OSRAM) 1974-07-26
DE2351159A1 (de) 1974-07-11

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