1. Overview

At present, in the high-voltage switching test, the output voltage will drop significantly after the load is brought by the rectifier power supply, and its influence on the switching operation characteristics cannot be ignored.

WJYD-20B portable programmable AC and DC power supply operation box adopts advanced compensation technology and the latest electronic components, with a variety of protection functions and superior performance. It overcomes the voltage drop after the load, and has a shut-off at any time, which can ensure that the switch action circle is cut off at any time after power-on, avoid the coil from burning, and work stably and reliably. It is suitable for the power department to do all kinds of switch low-voltage action test and opening and closing test.

2. Technical indicators:

Power socket: input AC220V±10%/50HZ;

Voltmeter: displays the current DC voltage value, which can also be regarded as AC voltage (DC inverter AC);

Closing and opening buttons: closing voltage or opening voltage output, please release the button once pressed, and the output will be kept as usual if the voltage is not released, which may damage the instrument and equipment;

Boost and buck buttons: AC/DC6-270V continuously adjustable, accuracy: ±1%;

Current: Instantaneous 30A≤10ms, 20A≤100ms, 10A≤60S;

DC closing (opening) output terminals: the red terminal outputs the closing positive power supply, the black terminal outputs the negative power supply, and the green wire terminal outputs the opening positive power supply.

AC closing (opening) output terminal: AC closing and opening control lines must be connected separately, do not connect to the common end, if connected to the common end, the power supply of the instrument will be damaged;

Energy storage +-: press the energy storage voltage button once to output, and then press again to turn off the power.