GB641794A - Improvements in or relating to electric power supply systems comprising normal and stand-by sources - Google Patents

Improvements in or relating to electric power supply systems comprising normal and stand-by sources

Info

Publication number
GB641794A
GB641794A GB135947A GB135947A GB641794A GB 641794 A GB641794 A GB 641794A GB 135947 A GB135947 A GB 135947A GB 135947 A GB135947 A GB 135947A GB 641794 A GB641794 A GB 641794A
Authority
GB
United Kingdom
Prior art keywords
sources
relating
stand
normal
power 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
GB135947A
Inventor
Richard Kelly
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB135947A priority Critical patent/GB641794A/en
Publication of GB641794A publication Critical patent/GB641794A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

641,794. Substituting sources in service. STANDARD TELEPHONES & CABLES, Ltd. Jan. 15, 1947, No. 1359. Drawings to Specification. [Class 38 (iv)] The subject-matter is the same as in Specification 641,791, but the claims are directed to means in the automatic change-over equipment for delaying the completion of an impending change-over from one supply equipment to the other for a period sufficient to allow the output voltage of the on-coming supply equipment to be adjusted to a value at which a smooth change-over can be effected.
GB135947A 1947-01-15 1947-01-15 Improvements in or relating to electric power supply systems comprising normal and stand-by sources Expired GB641794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB135947A GB641794A (en) 1947-01-15 1947-01-15 Improvements in or relating to electric power supply systems comprising normal and stand-by sources

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB135947A GB641794A (en) 1947-01-15 1947-01-15 Improvements in or relating to electric power supply systems comprising normal and stand-by sources

Publications (1)

Publication Number Publication Date
GB641794A true GB641794A (en) 1950-08-23

Family

ID=9720645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB135947A Expired GB641794A (en) 1947-01-15 1947-01-15 Improvements in or relating to electric power supply systems comprising normal and stand-by sources

Country Status (1)

Country Link
GB (1) GB641794A (en)

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