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The relay protection test power cabinet is my company according to the Department of energy "power plant, substation and relay protection testing instrument configuration quota", "test of relay protection regulations" and "issued by the Ministry of power industry against accidents of power system protection and security automatic equipment measures" of the relevant provisions of the design and manufacture of products. It provides reliable, stable and convenient AC and DC test power for field relay protection test, which provides reliable guarantee for improving the quality of relay protection experiment, ensuring life and equipment safety.

This equipment is suitable for power plants, substations and large and medium-sized industrial enterprises, and can be used as the standard relay protection test power cabinet.

Product characteristics

The power cabinet of relay protection test adopts full closed cabinet structure, front and rear door locks, and the panel is made of plate.

The main components are isolation transformer, three-phase autotransformer, reactor, rectifier, capacitor, automatic air switch, leakage protection switch, ammeter, voltmeter and other components.

The screen has an analog circuit, which makes the operator easy to identify and avoid misoperation.

The instrument, the indicator lamp, the control switch are mounted on the front panel, and the input and output wires can be connected by the terminal and terminal.

Product parameters

AC part

1. rated input voltage: three phase 220V/380V, frequency 50Hz;

2. rated output voltage: 220V/380, three-phase four lines, a total of three road output; 58V/100V, three-phase four lines, a total of three road output.

3. when the three-phase input is balanced, the output imbalance is less than 1%.

4. the three harmonic components are less than 3%.

The 5. input transformer capacity is 15KVA, and the maximum output current is 25A under the condition of 8 hour working system.

DC part

1. power supply is input for AC three phase 380V.

The 2. output DC voltage 0-250V can be adjusted continuously, and the output is divided into three channels.

The 3. rectifier transformer capacity is 5KVA, and the maximum output current is 20A under the condition of 8 hour working system.

4. output DC ripple coefficient K<1.5%.