In power work, the relay protection tester is a very intelligent test instrument. So how to use the relay protection tester for AC test in power work?

There is an "AC test" module in the relay protection tester, which is a universal and comprehensive test module. The comprehensiveness is embodied in the independent 4-phase voltage and 3-phase current test units, and independent 6-phase voltage and current test units, and there are 12 simultaneous output units and sequential component output test units. These units are switched with each other through the buttons in the instrument interface. Different units are independent and can call each other. This feature can fully meet the AC test test of the power system under various conditions.

The most commonly used unit in power work is the "4-phase voltage and 3-phase current" unit. Since other units are basically the same as this unit in usage, we can focus on the functional characteristics of "4-phase voltage and three-phase current" : Feature 1. This unit can flexibly control the output of 4-phase voltage, 3-phase current, 6-phase voltage, 6-phase current, and 12 output multiple combinations at the same time; Feature 2, with sequential component output function, which can directly set the sequence component value And automatically combine the voltage and current output of each phase, and change the output according to the sequence component at the same time; feature three, the amplitude and phase of each phase voltage and current output can be set arbitrarily, and the amplitude can be set to the upper limit; feature four, each quantity Amplitude, phase and frequency can be set for decorating, and the change step length can also be set arbitrarily; feature four, can set a variety of output mode combinations, and can set any number at the same time; feature five, can switch automatically when outputting , White automatic, manual; feature six, can directly modify the amplitude, phase, step length and the number of variables in the output state; feature seven, the power value used to verify the power meter can be directly displayed; feature eight, action value , Return value, action time, and return time can all be measured.