SU1503027A1 - Method of determining insulation resistance of phases of electric mains - Google Patents
Method of determining insulation resistance of phases of electric mains Download PDFInfo
- Publication number
- SU1503027A1 SU1503027A1 SU874191561A SU4191561A SU1503027A1 SU 1503027 A1 SU1503027 A1 SU 1503027A1 SU 874191561 A SU874191561 A SU 874191561A SU 4191561 A SU4191561 A SU 4191561A SU 1503027 A1 SU1503027 A1 SU 1503027A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phases
- voltage
- phase
- insulation resistance
- network
- Prior art date
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
Изобретение относитс к электротехнике , в частности, к методам косвенного определени сопротивлени изол ции электрических сетей, и может быть использовано дл определени параметров изол ции отдельных фаз электрической сети. Цель изобретени - повышение точности и сокращение времени измерений. Способ предусматривает измерение модулей напр жени второй и третьей в пор дке чередовани фаз, шунтирование первой фазы на землю с помощью шунтирующего резистора, измерение модулей напр жени на двух других фазах и расчет сопротивлени отдельных фаз и емкости сети по формулам, приведенным в описании изобретени . Устройство, реализующее способ, содержит блок 2 управл емых шунтов, датчики 3 - 5 напр жени , управл емый коммутатор 6, аналого-цифровой преобразователь 7, блок 8 управлени , управл ющую электронно-вычислительную машину 9, блок 10 индикации, блок 11 регистрации. Дл осуществлени непрерывного контрол сопротивлени изол ции пофазно измер ют напр жение только двух фаз сети, точность определени обеспечиваетс выбором величины шунта в блоке 2, при котором напр жение фазы А измен етс на величину более 15% от напр жени фазы в исходном состо нии. 2 ил.The invention relates to electrical engineering, in particular, to methods for indirect determination of the insulation resistance of electrical networks, and can be used to determine the insulation parameters of individual phases of the electrical network. The purpose of the invention is to improve the accuracy and reduce the measurement time. The method involves measuring voltage modules of the second and third in order of phase alternation, shunting the first phase to earth with a shunt resistor, measuring voltage modules at the other two phases, and calculating the resistance of individual phases and network capacity using the formulas given in the description of the invention. The device implementing the method comprises a unit 2 controlled shunts, voltage sensors 3-5, a controlled switch 6, an analog-to-digital converter 7, a control unit 8, a control electronic computer 9, a display unit 10, a registration unit 11. To carry out continuous monitoring of the insulation resistance, the voltage of only two phases of the network is measured in phases. The accuracy of determination is ensured by selecting the shunt value in block 2, at which the voltage of phase A varies by more than 15% of the phase voltage in the initial state. 2 Il.
Description
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« Ь+И-(а+"B + i- (a +
Ча-аЧ (-Jl)- ) Cha-ach (-jl) -)
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874191561A SU1503027A1 (en) | 1987-01-05 | 1987-01-05 | Method of determining insulation resistance of phases of electric mains |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874191561A SU1503027A1 (en) | 1987-01-05 | 1987-01-05 | Method of determining insulation resistance of phases of electric mains |
Publications (1)
Publication Number | Publication Date |
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SU1503027A1 true SU1503027A1 (en) | 1989-08-23 |
Family
ID=21284430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU874191561A SU1503027A1 (en) | 1987-01-05 | 1987-01-05 | Method of determining insulation resistance of phases of electric mains |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1503027A1 (en) |
-
1987
- 1987-01-05 SU SU874191561A patent/SU1503027A1/en active
Non-Patent Citations (1)
Title |
---|
Авторское свидетельство СССР № 595683, кл. G 01 R 27/18, 1978. Патент JP № 1958-47671, кл. G 01 R 27/18, 1978. * |
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