JPS52102550A - Grounding detection system - Google Patents
Grounding detection systemInfo
- Publication number
- JPS52102550A JPS52102550A JP1962376A JP1962376A JPS52102550A JP S52102550 A JPS52102550 A JP S52102550A JP 1962376 A JP1962376 A JP 1962376A JP 1962376 A JP1962376 A JP 1962376A JP S52102550 A JPS52102550 A JP S52102550A
- Authority
- JP
- Japan
- Prior art keywords
- detection system
- grounding
- grounding detection
- line grounding
- produced
- 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
- Emergency Protection Circuit Devices (AREA)
- Protection Of Generators And Motors (AREA)
Abstract
PURPOSE: In a system where synchronous machine is started with low frequency by static frequency converter, to detect one line grounding in the system easily and reliably by discriminating high frequency voltage produced in grounding circuit during starting from that produced during one line grounding.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1962376A JPS52102550A (en) | 1976-02-25 | 1976-02-25 | Grounding detection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1962376A JPS52102550A (en) | 1976-02-25 | 1976-02-25 | Grounding detection system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS52102550A true JPS52102550A (en) | 1977-08-27 |
JPS5526665B2 JPS5526665B2 (en) | 1980-07-15 |
Family
ID=12004308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1962376A Granted JPS52102550A (en) | 1976-02-25 | 1976-02-25 | Grounding detection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52102550A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62181385U (en) * | 1986-05-06 | 1987-11-17 |
-
1976
- 1976-02-25 JP JP1962376A patent/JPS52102550A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5526665B2 (en) | 1980-07-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS52102550A (en) | Grounding detection system | |
JPS5370567A (en) | Water level sensing circuit for washing machine | |
JPS5312258A (en) | Noise removing circuit | |
JPS5425446A (en) | Blushless exciter protective device | |
JPS5439535A (en) | Average value operation circuit | |
JPS5357878A (en) | Peak value detector | |
JPS52147748A (en) | Phaseless voltage detector | |
JPS5320530A (en) | Inverter | |
JPS532741A (en) | Inductive heating unit | |
JPS5321717A (en) | Electric sewing machine erroneous action prevention system | |
JPS5237758A (en) | Phase discrimination circuit | |
JPS52127273A (en) | Step-out detector for synchronous motor | |
JPS5286545A (en) | Finish detection system in electronic range | |
JPS5329548A (en) | Phase transition discriminating circuit | |
JPS5257927A (en) | Prevention of simultaneous starting of high and low pressure stand-by machines | |
JPS5243414A (en) | Synchronism control circuit in automatic rhythm player etc. | |
JPS5228636A (en) | Grounding detection method | |
JPS52146514A (en) | Ghost eliminating system | |
JPS51143372A (en) | Frequency detection circuit | |
JPS52149072A (en) | Faults detecting circuit in circuit for detecting inverse voltage of thyristor | |
JPS5384643A (en) | Detection circuit | |
JPS5248426A (en) | Noise detection unit | |
JPS5421506A (en) | Rotation/frequency converter for motor | |
JPS52119873A (en) | Bidirectional photothyrister | |
JPS5281773A (en) | Device for detecting damage in shaft insulators |