发明名称 |
Latch operated tap changing switch for transformer regulating system |
摘要 |
A tap-changing transformer system, utilized for voltage regulation of the line potential applied to a load from a source of energy, has a non-arcing switch to protect tap contacts during a tap change. A fail-safe circuit is utilized to determine that the non-arcing switch and its associated circuitry are operating properly before a movable tap contact is transferred from one stationary tap to another. In the event that the fail-safe circuit detects an improper operation of the non-arcing switch, the source is connected directly to the load to preclude the passage of any load current through the tap-changing transformer. A particular form of transfer switch useful in effecting the connection of the source directly to the load employs a current-limiting impedance arrangement.
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申请公布号 |
US4185177(A) |
申请公布日期 |
1980.01.22 |
申请号 |
US19780882583 |
申请日期 |
1978.03.02 |
申请人 |
MCGRAW-EDISON |
发明人 |
GILKER, CLYDE;LAMKE, ARLAND D |
分类号 |
G01R31/00;G05F1/147;H01F27/40;H01F29/02;H02H7/055;(IPC1-7):H01H3/00 |
主分类号 |
G01R31/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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