JPS64473A - Method for monitoring insulation resistance of field winding - Google Patents
Method for monitoring insulation resistance of field windingInfo
- Publication number
- JPS64473A JPS64473A JP63140476A JP14047688A JPS64473A JP S64473 A JPS64473 A JP S64473A JP 63140476 A JP63140476 A JP 63140476A JP 14047688 A JP14047688 A JP 14047688A JP S64473 A JPS64473 A JP S64473A
- Authority
- JP
- Japan
- Prior art keywords
- field winding
- relay
- resistance values
- resistors
- time
- 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.)
- Granted
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
PURPOSE: To surely detect the insulation deterioration of a field winding by constituting the field winding in such a manner that the ratio of the resistance values of 1st and 2nd external resistors is changed at every specified time.
CONSTITUTION: A relay Ry is interposed between an intermediate tap 5 of the 1st external resistor RA and a ground terminal 2 so that the tap 5 and the terminal 2 are shorted when the contacts of the relay Ry are closed. The ratio of the resistance values of the 1st and 2nd external resistors RA, RB of this time attains 1:2, i.e., 2RA=RB at this time. The excitation coil M of the relay Ry is repeatedly energized and de-energized at every specified time by the pulse signals transmitted by an oscillator 7, by which the closing and opening of the contacts are repeated. The resistance values of the resistors RA, RB, therefore, attain RA=RB or 2RA=RB and this relation is alternately repeated. A blind zone A which exists in the central part in the case of the former is consequently shifted downward without being superposed and a blind zone B is obtd. in the case of the latter. The deterioration of the field winding 1 is thereby surely detected even if the insulation in any part thereof is deteriorated.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980058200U JPS56159774U (en) | 1980-04-30 | 1980-04-30 | |
| JP63-140476A JPH01473A (en) | 1988-06-09 | Method for monitoring insulation resistance of field windings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63-140476A JPH01473A (en) | 1988-06-09 | Method for monitoring insulation resistance of field windings |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPS64473A true JPS64473A (en) | 1989-01-05 |
| JPH01473A JPH01473A (en) | 1989-01-05 |
| JPH0118388B2 JPH0118388B2 (en) | 1989-04-05 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2508587C1 (en) * | 2012-07-31 | 2014-02-27 | Общество с ограниченной ответственностью "Исследовательский центр "Бреслер" | Protection method of synchronous generators against fault to ground at one point of excitation circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2508587C1 (en) * | 2012-07-31 | 2014-02-27 | Общество с ограниченной ответственностью "Исследовательский центр "Бреслер" | Protection method of synchronous generators against fault to ground at one point of excitation circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56159774U (en) | 1981-11-28 |
| JPH0118388B2 (en) | 1989-04-05 |
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