Title:
TRANSFORMATION RATIO TESTING DEVICE FOR TRANSFORMER, AND CARRIAGE
Document Type and Number:
Japanese Patent JP3403930
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance testing efficiency in testing the transformation ratio of a transformer by improving the workability.
SOLUTION: The voltage of the secondary winding 24S of a boosting transformer 24 is measured, as a voltage value in proportion to itself, by a primary- winding voltmeter 26 connected to the secondary winding 25S of an instrumental transformer 25. The voltage between the taps 8 and 7, 7 and 6, 6 and 5, and 5 and 4 of a tap changer 2 is measured in proportion to the difference in the number of their turns by tap voltmeters 27, 28, 29 and 30 at a time, and the voltage of a secondary winding 1SU is simultaneously measured in proportion to its number turns by a secondary-winding voltmeter 31. A personal computer 33 takes therein these measured voltages V1 to V6 by the voltmeters 26 to 31 and compares them with equipment-type data inputted in advance to determine whether they have a normal value or transformation ratio or not.
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| JPS5934166 | MEASURING DEVICE OF TRANSFORMER LOSS |
Inventors:
Masahiro Endo
The third son of Minami
The third son of Minami
Application Number:
JP30559997A
Publication Date:
May 06, 2003
Filing Date:
November 07, 1997
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G01R29/20; G01R31/00; H01F29/02; G01R31/06; (IPC1-7): G01R29/20; G01R31/00; G01R31/06; H01F29/02
Domestic Patent References:
| JP5938667A | ||||
| JP9269344A | ||||
| JP447666U |
Attorney, Agent or Firm:
Tsuyoshi Sato