Title:
PROCESS FOR MONITORING A THREE-PHASE MAINS FOR A CPROCESS FOR MONITORING A THREE-PHASE MAINS FOR A CHANGE IN THE TUNING OF THE ARC SUPRESSION COIL HANGE IN THE TUNING OF THE ARC SUPRESSION COIL
Document Type and Number:
WIPO Patent Application WO1996034293
Kind Code:
A3
Abstract:
A process for monitoring a three-phase mains for a change in the tuning of the arc suppression coil (ZN) in which the neutral point shift voltage (Uo) arising at the arc suppression coil is continuously measured and compared with a tolerance range and if the tolerance range is exceeded signals a tuning change, in which an auxiliary signal (Ii) is continuously applied to the arc suppression coil (ZN) in order to increase the neutral point shift voltage (Uo).
Inventors:
PAPP KLAUS
DRUML GERNOT
DRUML GERNOT
Application Number:
PCT/AT1996/000081
Publication Date:
January 09, 1997
Filing Date:
April 24, 1996
Export Citation:
Assignee:
HAEFELY TRENCH AUSTRIA GMBH (AT)
International Classes:
G01R27/16; G01R27/26; G01R29/16; G01R31/08; H02H9/08; H02J3/26; (IPC1-7): G01R27/16; G01R29/16; G01R31/08; H02H9/08; H02J3/26
Foreign References:
| EP0595677A1 | 1994-05-04 | |||
| DE2849083A1 | 1980-05-22 | |||
| EP0235145B1 | 1991-02-27 | |||
| CH155905A | 1932-07-15 | |||
| DE2735756A1 | 1979-02-22 | |||
| DE2426871A1 | 1975-10-30 | |||
| DE4329382A1 | 1995-03-02 |
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