GB1293379A - Capacitance and loss factor measurement - Google Patents

Capacitance and loss factor measurement

Info

Publication number
GB1293379A
GB1293379A GB5202769A GB5202769A GB1293379A GB 1293379 A GB1293379 A GB 1293379A GB 5202769 A GB5202769 A GB 5202769A GB 5202769 A GB5202769 A GB 5202769A GB 1293379 A GB1293379 A GB 1293379A
Authority
GB
United Kingdom
Prior art keywords
current
winding
resistor
loss factor
balance
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
GB5202769A
Inventor
Laszlo Bansagi
Peter Osvath
Laszlo Schnell
Pal Simak
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.)
BUDAPESTI MUESZAKI EGYETEM
Budapesti Muszaki Egyetem
Original Assignee
BUDAPESTI MUESZAKI EGYETEM
Budapesti Muszaki Egyetem
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 BUDAPESTI MUESZAKI EGYETEM, Budapesti Muszaki Egyetem filed Critical BUDAPESTI MUESZAKI EGYETEM
Priority to GB5202769A priority Critical patent/GB1293379A/en
Publication of GB1293379A publication Critical patent/GB1293379A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
    • G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance

Abstract

1293379 Capacitance and loss measurement BUDAPESTI MUSZAKI EGYETEM 23 Oct 1969 52027/69 Heading G1U In a system for measuring relative capacitance variation #C x /C x and loss factor tan # x of a component C x a current balance technique is used, wherein the flux in a transformer coil N 1 , through which passes the current C x due to a voltage U, is balanced against that in a coil N 2 , through which passes part of the current through a standard capacitor resistor network CNR 2 by adjusting the turns ratio N 2 /N 1 and resistor R to achieve an initial balance for C x , tan # x as indicated at NI. To facilitate continuous adjustment (rather than discrete adjustment of N 2 /N 1 in order to monitor variations #C x in C x , a unit Q which may be a current transformer is connected across the winding N 2 , to feed back a proportion of the current through the winding. Continuous adjustment is then achievable by altering transfer factor of this unit. The system described also incorporates a capacitor Co connected across the winding N 2 and resistor R. This has the effect of very considerably reducing the value of R necessary to balance the system when components with high loss factor are under test.
GB5202769A 1969-10-23 1969-10-23 Capacitance and loss factor measurement Expired GB1293379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5202769A GB1293379A (en) 1969-10-23 1969-10-23 Capacitance and loss factor measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5202769A GB1293379A (en) 1969-10-23 1969-10-23 Capacitance and loss factor measurement

Publications (1)

Publication Number Publication Date
GB1293379A true GB1293379A (en) 1972-10-18

Family

ID=10462353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5202769A Expired GB1293379A (en) 1969-10-23 1969-10-23 Capacitance and loss factor measurement

Country Status (1)

Country Link
GB (1) GB1293379A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460407A2 (en) * 1990-06-02 1991-12-11 Robert Bosch Gmbh Sensor circuit
CN114019288A (en) * 2021-11-09 2022-02-08 国网河南省电力公司济源供电公司 GIS basin-type insulator aging test method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460407A2 (en) * 1990-06-02 1991-12-11 Robert Bosch Gmbh Sensor circuit
EP0460407A3 (en) * 1990-06-02 1994-03-16 Bosch Gmbh Robert
CN114019288A (en) * 2021-11-09 2022-02-08 国网河南省电力公司济源供电公司 GIS basin-type insulator aging test method

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee