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|Title: ||Microcomputer Testing of Underfrequency Relays.|
|Authors: ||Ghai, A. K.|
Verma, H. K.
|Issue Date: ||Mar-1979 |
|Publisher: ||Paper presented at Symposium on 'Mini-Micro Computers & Automation March 28-30, 1979, Department of Electronics and Communication Engg. University of Roorkee, Roorkee.|
|Citation: ||A. K. Ghai, H. K. Verma, Prof. P. Mukhopadhyay, "Microcomputer Testing of Underfrequency Relays". Paper presented at Symposium on 'Mini-Micro Computers & Automation March 28-30, 1979, Department of Electronics and Communication Engg. University of Roorkee, Roorkee.|
|Abstract: ||The paper describes a microcomputer based automatic testing of underfrequency relays. The microcomputer generates a gradually - decaying - frequency square wave signal which is fed to the relay through a low -pass filter and a power amplifier. The relay pickup frequency is measured and stored for printed. The operating time of the relay is measured at a fixed frequency lower than its pickup value and the same is stored and printedout.|
|Appears in Collections:||Conference Papers|
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