GB988640A - Improvements in and relating to electrical control systems - Google Patents

Improvements in and relating to electrical control systems

Info

Publication number
GB988640A
GB988640A GB499563A GB499563A GB988640A GB 988640 A GB988640 A GB 988640A GB 499563 A GB499563 A GB 499563A GB 499563 A GB499563 A GB 499563A GB 988640 A GB988640 A GB 988640A
Authority
GB
United Kingdom
Prior art keywords
battery
supply
contactor
rectifier
contact
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
GB499563A
Inventor
James Robert Stacey
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.)
Allen West and Co Ltd
Original Assignee
Allen West and 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 Allen West and Co Ltd filed Critical Allen West and Co Ltd
Priority to GB499563A priority Critical patent/GB988640A/en
Publication of GB988640A publication Critical patent/GB988640A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02H7/09—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 over-voltage; against reduction of voltage; against phase interruption
    • 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
    • H02H3/24—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 undervoltage or no-voltage
    • H02H3/247—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 undervoltage or no-voltage having timing means

Landscapes

  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

988,640. Control of motors. ALLEN WEST & CO. Ltd. Jan. 30, 1964 [Feb. 7, 1963], No. 4995/63. Heading H2J. The control circuits for a number of motor starters are supplied over a common D.C. bus 10 which is energized from a main A.C. source through transformer T, rectifier REC1, and contact C1 of contactor C. When the A.C. supply is at normal level, timing relay TR is energized to close contact TR1, whereby contact C1 is also closed. Upon reduction of level of the A.C. supply, the output voltage of rectifier REC1 falls below the voltage of battery B, the contactor C being held operated by the battery which also supplies the bush 10. If the A.C. supply is not restored during the timing period of relay TR, contacts TR1 opened to release contactor C which disconnects the battery from bush 10. Rectifier REC2 prevents direct application of the output of rectifier REC1 to the battery, a resistor R providing trickle charging.
GB499563A 1963-02-07 1963-02-07 Improvements in and relating to electrical control systems Expired GB988640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB499563A GB988640A (en) 1963-02-07 1963-02-07 Improvements in and relating to electrical control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB499563A GB988640A (en) 1963-02-07 1963-02-07 Improvements in and relating to electrical control systems

Publications (1)

Publication Number Publication Date
GB988640A true GB988640A (en) 1965-04-07

Family

ID=9787737

Family Applications (1)

Application Number Title Priority Date Filing Date
GB499563A Expired GB988640A (en) 1963-02-07 1963-02-07 Improvements in and relating to electrical control systems

Country Status (1)

Country Link
GB (1) GB988640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110233487A (en) * 2019-04-30 2019-09-13 浙江芯能光伏科技股份有限公司 Photovoltaic power station direct current cabinet battery discharge control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110233487A (en) * 2019-04-30 2019-09-13 浙江芯能光伏科技股份有限公司 Photovoltaic power station direct current cabinet battery discharge control device

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