GB721934A - Improvements in moving coil synchroscopes - Google Patents

Improvements in moving coil synchroscopes

Info

Publication number
GB721934A
GB721934A GB2623552A GB2623552A GB721934A GB 721934 A GB721934 A GB 721934A GB 2623552 A GB2623552 A GB 2623552A GB 2623552 A GB2623552 A GB 2623552A GB 721934 A GB721934 A GB 721934A
Authority
GB
United Kingdom
Prior art keywords
voltage
lines
pointer
instrument
zero
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
GB2623552A
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.)
ELECTRICAL INSTR Co HILLI
JOHN EDWIN PARTON
Original Assignee
ELECTRICAL INSTR Co HILLI
JOHN EDWIN PARTON
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 ELECTRICAL INSTR Co HILLI, JOHN EDWIN PARTON filed Critical ELECTRICAL INSTR Co HILLI
Priority to GB2623552A priority Critical patent/GB721934A/en
Publication of GB721934A publication Critical patent/GB721934A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

721,934. Indicating synchronism. ELECTRICAL INSTRUMENT CO. (HILLING- TON), Ltd., and PARTON, J. E. Oct. 19, 1953 [Oct. 20, 19521, No. 26235/52. Class 37. A single phase synchroscope comprises a resistor i between the two neutrals j<SP>1</SP>, k<SP>1</SP> and a rectifier operated moving coil instrument b/a across the phase lines g, h through resistors c, d and when the voltage and frequency of alternator lines g, j<SP>1</SP> approximate to that of supply system lines h, k<SP>1</SP> the instrument pointer swings slowly from side zero to twice the system voltage and then slowly back to zero. When the pointer is at or near zero then this is the moment of correct phase relation and the paralleling switch is therefore closed. The extent of deflection and rate of swing of the pointer indicate respectively the voltage of the incoming system and the frequency difference between the two systems.
GB2623552A 1952-10-20 1952-10-20 Improvements in moving coil synchroscopes Expired GB721934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2623552A GB721934A (en) 1952-10-20 1952-10-20 Improvements in moving coil synchroscopes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2623552A GB721934A (en) 1952-10-20 1952-10-20 Improvements in moving coil synchroscopes

Publications (1)

Publication Number Publication Date
GB721934A true GB721934A (en) 1955-01-12

Family

ID=10240453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2623552A Expired GB721934A (en) 1952-10-20 1952-10-20 Improvements in moving coil synchroscopes

Country Status (1)

Country Link
GB (1) GB721934A (en)

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