JPS5571959A - Device for diagnosing malfunction of ac winding for electric equipment - Google Patents
Device for diagnosing malfunction of ac winding for electric equipmentInfo
- Publication number
- JPS5571959A JPS5571959A JP14558178A JP14558178A JPS5571959A JP S5571959 A JPS5571959 A JP S5571959A JP 14558178 A JP14558178 A JP 14558178A JP 14558178 A JP14558178 A JP 14558178A JP S5571959 A JPS5571959 A JP S5571959A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- stator
- current
- insulating
- machine
- 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.)
- Pending
Links
Abstract
PURPOSE: To exactly diagnose the local abnormal overheat of AC winding of an electric equipment operating and the extent by non-destructive means by applying DC voltage to the AC winding and detecting the current flowing through the insulating layer of the AC winding to display it.
CONSTITUTION: A malfunction diagnosing device 5 is connected to the output terminals 3aW3c of stator windings 2aW2c of a rotary electric machine 1. Low level DC voltage is applied from a DC power supply 8 to the stator winding of the operating machine 1. When the stator iron core of the machine 1 is locally overheated or the stator winding is heated due to interlayer shortage thereof, the temperature of the portion corresponding to the insulating layer of the stator winding is locally increased to cause the decrease of the insulating resistor at the portion raised at its temperature to thereby increase the current at the portion. This current increase is detected by a DC current detector 10, and the change of the insulating resistance is recorded and displayed on a recorder 12. When the insulating resistance is decreased less than predetermined level, an alarm 13 is operated to thereby display the occurrence of abnormal overheat thereat.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14558178A JPS5571959A (en) | 1978-11-24 | 1978-11-24 | Device for diagnosing malfunction of ac winding for electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14558178A JPS5571959A (en) | 1978-11-24 | 1978-11-24 | Device for diagnosing malfunction of ac winding for electric equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5571959A true JPS5571959A (en) | 1980-05-30 |
Family
ID=15388394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14558178A Pending JPS5571959A (en) | 1978-11-24 | 1978-11-24 | Device for diagnosing malfunction of ac winding for electric equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5571959A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6134485U (en) * | 1984-07-31 | 1986-03-03 | 株式会社 鶴見製作所 | Motor insulation resistance monitoring device |
| CN104407297A (en) * | 2014-12-02 | 2015-03-11 | 上海电机系统节能工程技术研究中心有限公司 | Comprehensive multi-station fully-automatic motor stator testing device |
-
1978
- 1978-11-24 JP JP14558178A patent/JPS5571959A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6134485U (en) * | 1984-07-31 | 1986-03-03 | 株式会社 鶴見製作所 | Motor insulation resistance monitoring device |
| CN104407297A (en) * | 2014-12-02 | 2015-03-11 | 上海电机系统节能工程技术研究中心有限公司 | Comprehensive multi-station fully-automatic motor stator testing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3593123A (en) | Dynamo electric machines including rotor winding earth fault detector | |
| KR840001401A (en) | Motor power factor controller with motor with reduced voltage starter | |
| CA1065435A (en) | Contact-free signal transmission | |
| US6504358B1 (en) | Method for detecting the operating temperature of a motor | |
| US4812751A (en) | Apparatus for monitoring earth faults on the rotor winding of a generator | |
| JPS5571959A (en) | Device for diagnosing malfunction of ac winding for electric equipment | |
| JPS55164378A (en) | Detecting unit for ground-fault trouble of brushless rotary generator | |
| SE8400885L (en) | DEVICE FOR DETERMINATION OF WINDOW CIRCUITS IN ROTORS TO COMMUTOR MOTORS | |
| JPS56166797A (en) | Operation monitoring device for multiple motors | |
| FR2309063A1 (en) | Distribution transformer winding temp. detector - designed to produce correct thermal image of winding hot spot under any overload | |
| SU149832A1 (en) | Control method for isolation of submersible motor winding | |
| JPS5784370A (en) | Monitoring device for rotary electric machine field winding insulation resistance | |
| JP3135987B2 (en) | Temperature detector | |
| JPS6216739Y2 (en) | ||
| JPS5720190A (en) | Detecting method for rotor position of rotary electric machine | |
| SU1129692A1 (en) | Method and apparatus for thermal protecting of electric machine | |
| JP3485834B2 (en) | Device for detecting interlayer short circuit of coil of rotating electrical machine | |
| JPS5933803A (en) | Sensor for detecting quenching of superconductive coil | |
| RU2028639C1 (en) | Electric motor insulation tester | |
| JPS5678397A (en) | Controlling device for engine generator | |
| Stevenson | Leakage current from appliances | |
| JPS5467688A (en) | Method of applying voltage for monitoring power cable insulation | |
| JPS5583441A (en) | Detector of stator abnormality of rotating electric machine | |
| JPS5310017A (en) | Field monitoring device of brushless synchronous motor | |
| JPH0690247B2 (en) | Insulation resistance measuring device self-diagnosis method |