GB1572455A - Rotor earth leakage protection for brushless synchronous machines - Google Patents
Rotor earth leakage protection for brushless synchronous machines Download PDFInfo
- Publication number
- GB1572455A GB1572455A GB48551/76A GB4855176A GB1572455A GB 1572455 A GB1572455 A GB 1572455A GB 48551/76 A GB48551/76 A GB 48551/76A GB 4855176 A GB4855176 A GB 4855176A GB 1572455 A GB1572455 A GB 1572455A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistor
- rotor
- synchronous machine
- current
- earth leakage
- 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
Links
- 230000001360 synchronised effect Effects 0.000 title claims description 32
- 238000004804 winding Methods 0.000 claims description 36
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 claims description 2
- 230000002950 deficient Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0805—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for synchronous motors
Landscapes
- Synchronous Machinery (AREA)
- Protection Of Generators And Motors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1519075A CH591774A5 (enrdf_load_html_response) | 1975-11-24 | 1975-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1572455A true GB1572455A (en) | 1980-07-30 |
Family
ID=4407105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB48551/76A Expired GB1572455A (en) | 1975-11-24 | 1976-11-22 | Rotor earth leakage protection for brushless synchronous machines |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT349557B (enrdf_load_html_response) |
| CH (1) | CH591774A5 (enrdf_load_html_response) |
| DE (1) | DE2555742C2 (enrdf_load_html_response) |
| FR (1) | FR2332639A1 (enrdf_load_html_response) |
| GB (1) | GB1572455A (enrdf_load_html_response) |
| IT (1) | IT1064561B (enrdf_load_html_response) |
| NO (1) | NO143123C (enrdf_load_html_response) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007361A (zh) * | 2013-02-22 | 2014-08-27 | 控制技术有限公司 | 接地故障检测电路 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1068239A (en) * | 1964-08-31 | 1967-05-10 | Licentia Gmbh | Protective circuit arrangement for dynamo-electric machines |
| SE331508B (enrdf_load_html_response) * | 1968-04-08 | 1971-01-04 | Asea Ab |
-
1975
- 1975-11-24 CH CH1519075A patent/CH591774A5/xx not_active IP Right Cessation
- 1975-12-11 DE DE2555742A patent/DE2555742C2/de not_active Expired
-
1976
- 1976-10-08 AT AT751076A patent/AT349557B/de not_active IP Right Cessation
- 1976-11-19 NO NO763960A patent/NO143123C/no unknown
- 1976-11-22 FR FR7635138A patent/FR2332639A1/fr active Granted
- 1976-11-22 GB GB48551/76A patent/GB1572455A/en not_active Expired
- 1976-11-24 IT IT29655/76A patent/IT1064561B/it active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007361A (zh) * | 2013-02-22 | 2014-08-27 | 控制技术有限公司 | 接地故障检测电路 |
| GB2520915A (en) * | 2013-02-22 | 2015-06-10 | Control Tech Ltd | Ground Fault Detection Circuit |
| US9541593B2 (en) | 2013-02-22 | 2017-01-10 | Control Techniques Limited | Ground fault detection circuit |
| US10012684B2 (en) | 2013-02-22 | 2018-07-03 | Nidec Control Techniques Limited | Ground fault detection circuit |
| GB2520915B (en) * | 2013-02-22 | 2020-04-29 | Nidec Control Techniques Ltd | Ground Fault Detection Circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2332639A1 (fr) | 1977-06-17 |
| ATA751076A (de) | 1978-09-15 |
| CH591774A5 (enrdf_load_html_response) | 1977-09-30 |
| NO763960L (enrdf_load_html_response) | 1977-05-25 |
| NO143123C (no) | 1980-12-29 |
| FR2332639B1 (enrdf_load_html_response) | 1982-09-10 |
| IT1064561B (it) | 1985-02-18 |
| DE2555742A1 (de) | 1977-05-26 |
| DE2555742C2 (de) | 1985-01-31 |
| AT349557B (de) | 1979-04-10 |
| NO143123B (no) | 1980-09-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |