Title:
【発明の名称】変圧器の温度試験方法
Document Type and Number:
Japanese Patent JP3087467
Kind Code:
B2
Abstract:
PURPOSE:To rapidly open the circuit of winding having an on-load tap changing device (OLTC) connected thereto after a test current is cut off in the temp. test of the transformer having a structure necessary for opening a part of the circuit of the winding at the time of the measurement of the resistance of the winding. CONSTITUTION:An opening part 19 is provided so as to open a tap selector on a side not used in a temp. test among a tap selector 12 on an odd tap number side and a tap selector 13 on an even tap number side before performing a temp. test. By changing over a changeover switch 11 by a control panel after a test current is cut off, the above mentioned circuit is opened to measure the resistance of winding.
Inventors:
Issei Ohtake
Application Number:
JP26439692A
Publication Date:
September 11, 2000
Filing Date:
October 02, 1992
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01R27/02; G01R31/00; G01R31/06; (IPC1-7): G01R27/02; G01R31/00
Domestic Patent References:
| JP5399414A | ||||
| JP57141565A | ||||
| JP1308976A | ||||
| JP508762B1 |
Attorney, Agent or Firm:
Kaneo Miyata (2 outside)