Microcomputer Relay Protection Tester - Yangzhou DARUI

Microcomputer Relay Protection Tester - Yangzhou DARUI

Published: 2020-08-03 16:28:02

Category: Microcomputer Relay Protection Tester

Product Description

Microcomputer Relay Protection Tester

DARUI Electric recommends

I. Product Features:

1. Intelligent host, controlled by DSP chip, with 16-bit DAC output, capable of generating high-density sine waves of 2000 points per cycle for the fundamental wave. The waveform quality is stable, improving the accuracy of the tester.

2. Standalone operation, controlled by a rotary mouse through a large LCD screen, with full Chinese display. It can test various relays, protection and safety automatic devices on site, and simulate various large and complex transient and conversion faults for whole-set tests.

3. Connected to a computer, through a full Chinese operation software on Windows platform, it can perform various large and complex calibration tasks with higher automation, conveniently test and scan various protection settings, store test data in real-time, display vector diagrams, plot fault waveforms, and print reports online.

4. The LCD display uses a 320×240 dot matrix graphic module, with all operation interfaces in Chinese, providing intuitive and clear display.

5. "Foolproof" operation, using an advanced "rotary mouse" controller, eliminating complex keyboard operations, no computer knowledge required, easy to learn and operate.

6. The whole unit uses switching power supply and switching amplifier technology, small size, light weight, only 11.6 kg.

7. Modular design, all plug-ins are completely independent, hardware maintenance and upgrade can be achieved by simply replacing plug-ins.

8. Flexible configuration, such as 6-phase current, 5-phase voltage + 2-phase current, etc.

9. Users can calibrate the accuracy of the tester through software.

10. Can replay fault recording data in Comtrade format.

11. Designed with power factor correction circuit according to international standards, making the device efficiency up to 95% or more.

12. When the supply voltage drops to 120V, the device still works normally.

13. The power amplifier uses hardware protection to ensure the reliability of the device.

II. Technical Parameters:

1. Current source:

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

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

Power: 400VA/phase

Accuracy: 0.2%, response time <160μs,

Resolution: AC 1mA, DC 2mA

2. Voltage source:

AC amplitude: 0～120V/phase   line voltage 0---250V

DC amplitude: 0—110V/phase

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

Power: 50VA/phase   Accuracy: 0.2%   Response time <120μs

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 degree   Accuracy: 0.1 degree

5. Switch inputs: 7 pairs of dry contacts or potential flip (5—250VDC)

6. Switch outputs: 3 pairs    0.5A/250VAC

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

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

9. Weight: 11.6kg

III. Product Introduction:

The microcomputer relay protection tester adopts a plug-in structure with excellent shock resistance. It uses a three-phase AC source, where the amplitude, phase, and frequency of voltage and current can be adjusted arbitrarily. It can also measure the operating time of relays. It can be used to test various relays and protection devices such as current, voltage, impedance, differential, etc.

The instrument is a new type of intelligent testing instrument developed in the past decade. Previous relay protection test tools mainly consisted of voltage regulators and phase shifters, which were bulky and had low accuracy, unable to meet the calibration requirements of modern microcomputer relay protection. With the continuous development of science and technology, microcomputer relay protection has been widely used in line protection, main transformer differential protection, excitation control, and other fields. Substation comprehensive automation has become the mainstream. It has become an indispensable testing tool for modern relay protection workers.

Note: The above information and technical parameters are compiled and released by Yangzhou DARUI Electric Co., Ltd.

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Product Details

Microcomputer Relay Protection Tester - Yangzhou DARUI