Design of Calibration Equipment for Relay Protection Test Apparatus.

In order to simple the way of appraising and calibrating relay protection test apparatus by using more than one universal instruments which caused the process inefficient and inconvenient to carry, using MCU and IC circuit, the advance technology, a calibration equipment of the apparatus is designed to measure the AC and DC power and the action time of power on (off). The test results prove that the measuring accuracy of AC, DC volume is respectively 0.5% and 0.2%, reaching the requirement of trade standards of the power, the action time is 0.002%, lower than 0.1%. Multi-kinds of relay protection test apparatus are fully able to be calibrated and made an objective assessment in the field by the equipment which is simple to operate with stable performance and antiinterference ability, meeting the standard of measure. [ABSTRACT FROM AUTHOR]