GB1450694A - 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
GB1450694A
GB1450694A GB4757773A GB4757773A GB1450694A GB 1450694 A GB1450694 A GB 1450694A GB 4757773 A GB4757773 A GB 4757773A GB 4757773 A GB4757773 A GB 4757773A GB 1450694 A GB1450694 A GB 1450694A
Authority
GB
United Kingdom
Prior art keywords
phase
signals
voltage
phase unbalance
amplifier
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
GB4757773A
Other languages
English (en)
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
General Electric Canada Co
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, General Electric Canada Co filed Critical Canadian General Electric Co Ltd
Publication of GB1450694A publication Critical patent/GB1450694A/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

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)
GB4757773A 1972-12-28 1973-10-11 Circuit for detecting phase unbalance in a three phase supply Expired GB1450694A (en)

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
GB1450694A true GB1450694A (en) 1976-09-22

Family

ID=4095401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4757773A Expired GB1450694A (en) 1972-12-28 1973-10-11 Circuit for detecting phase unbalance in a three phase supply

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (3)

* 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.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE2351159A1 (de) 1974-07-11
FR2212667A1 (enrdf_load_html_response) 1974-07-26
JPS4997248A (enrdf_load_html_response) 1974-09-13
CA960754A (en) 1975-01-07

Similar Documents

Publication Publication Date Title
FR2124980A5 (enrdf_load_html_response)
GB1532503A (en) Solenoid control system
GB1527910A (en) Burner control systems
ES446546A1 (es) Un circuito electrico para indicar el paso y direccion de lacorriente por un circuito.
ES406425A1 (es) Dispositivo de rele estatico protector de red.
GB1450694A (en) Circuit for detecting phase unbalance in a three phase supply
GB1450419A (en) Detector for reverse and open phase in a three phase circuit
GB1079374A (en) Unbalanced load detection in alternating current system
GB1196382A (en) Improvement of Eddy Current Flaw Detector
GB1154332A (en) Improvements in or relating to Minimum Detector Circuits
GB1099001A (en) And type fail-safe logic circuit
GB1030255A (en) Capacitance to d.c. voltage converter
GB1113893A (en) Control circuit
GB1144549A (en) Pulse modulation system
GB1242737A (en) Improvements in or relating to a protecting device for rotating machines
GB1284386A (en) Window trip monitor and comparator circuit
GB1194753A (en) Phase Sensitive Rail Vehicle Detection Systems
GB1257230A (enrdf_load_html_response)
JPS55160990A (en) Control system for induction motor
GB1197864A (en) Signal Level Detectors
GB1020375A (en) Improvements in synchronous detection circuits
GB915293A (en) Improvements in or relating to push-pull phase detectors
GB1024955A (en) Improvements in and relating to inverters
GB939757A (en) Improvements in well logging apparatus
GB992554A (en) Means for converting the ratio of two alternating electrical signals into a direct current or voltage signal

Legal Events

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