Relay protection comprehensive tester

SX-1066Relay protection comprehensive testerIt is a newly developed intelligent testing instrument. Previously, relay protection testing tools were mainly composed of voltage regulators and phase shifters, which were bulky and had low accuracy, and could no longer meet the verification work of modern microcomputer relay protection. With the continuous development of science and technology, microcomputer relay protection has been widely used in various fields such as line protection, main transformer differential protection, excitation control, etc. The comprehensive automation of substations has become mainstream. Therefore, the relay protection tester will inevitably become a testing tool for modern relay protection workers.

SX-1066Relay protection comprehensive testerTechnical parameters:

1. Current source:

Communication amplitude: 0~40A/phase 0~120A/three-phase parallel connection

DC amplitude: 0-30A/phase 0-90A/three-phase parallel connection

Power: 400VA/phase

Accuracy: 0.2%, response time<160 μ s,

Resolution: AC 1mA, DC 2mA

2. Voltage source:

AC amplitude: 0~125V/phase line voltage 0~250V

DC amplitude: 0-110V/phase

Auxiliary power supply VZ: 3V0~150VAC or 0-220VDC

High power: 50VA/phase accuracy: 0.2% response time<120 μ s

Resolution: AC 2.5mV DC: 3.5mV

3. Frequency: Range 0-1000Hz Resolution 0.001Hz (power frequency) 0.1Hz (1KHz)

4. Phase: Range 0-360 degrees Resolution: 0.1 degrees Accuracy: 0.1 degrees

5. Switching input: 7 pairs of empty contacts or potential flip (5-250VDC)

6. Switching output: 3 pairs of 0.5A/250VAC

7. Power supply voltage: 120V~250VAC 50/60Hz

8. Chassis size: 450mm × 150mm × 370mm

9. Weight: 11.6kg

Instrument shooting

Instrument shooting

Test method:

Turn on the power switch, the display screen shows "Welcome to use...", "Self checking in progress...", the microcomputer self checks, and after the self check is normal, it displays "Self check completed.

When measuring, the type of test power supply should be selected using the "flip up" and "flip down" keys according to the type of relay being tested, so that the status display corresponds to the type of relay being tested. And connect the relay coil to the corresponding power output terminal, and connect the relay contact to the input terminal.

1. Measurement: Press the "Measurement" button to measure the suction and disconnection voltage (current) values three times, and then press the "Print" button to print the data.

2. Time measurement: First find the rated value of the tested relay, then press the "Time Measurement" button. The machine will automatically open and close three times to measure the suction and disconnection time. After completion, press the "Print" button to print the data.

3. The use of the "Convert" button: First adjust the DC current value, then press the "Convert" button, and the DC current will output normally, and the displayed value will be shown on the second line of the screen. At this time, it can output simultaneously with other power sources, providing relay verification for multiple power sources, such as reclosing relays.

4. Time setting: Users can adjust the internal clock of the instrument.

5. Instrument calibration: After using the instrument for a period of time, if there is a deviation in the test, the user can calibrate it with a high-level meter and adjust the internal coefficient with the "up" and "down" keys without opening the chassis or adjusting any knobs.