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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 degrees Accuracy: 0.1 degrees
5. Switching Inputs: 7 pairs of dry contacts or potential flip (5—250VDC)
6. Switching Outputs: 3 pairs 0.5A/250VAC
7. Supply Voltage: 120V～250VAC 50/60Hz
8. Chassis Dimensions: 450mm×150mm×370mm
9. Weight: 11.6kg
Product Features:
1. Intelligent host, controlled by DSP chip, 16-bit DAC output, can generate high-density sine wave with 2000 points per cycle for fundamental wave. The waveform quality is stable, improving the accuracy of the tester.
2. Standalone operation, the device is operated via a rotary mouse through a large LCD screen, with full Chinese display. It can test various relays, protections, and automatic safety devices on site, and can simulate various large and complex transient and conversion faults for whole-set tests.
3. Connect to a computer for operation, through a full Chinese operation software on Windows platform, it can perform various large, complex, and more automated calibration tasks, conveniently test and scan various protection settings, store test data in real-time, display vector diagrams, draw fault waveforms, and print reports online.
4. The LCD uses a 320×240 dot matrix graphic module, with all operation interfaces in Chinese, providing clear and intuitive display.
5. "Foolproof" operation, using advanced "rotary mouse" controller, eliminates complex keyboard operations, no computer knowledge required, easy to learn and operate.
6. The whole machine 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 configuring 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.
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, and could no longer meet the calibration needs 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. Comprehensive automation of substations has become mainstream. It has become an indispensable testing tool for modern relay protection workers.
Modern ones can be divided into two types: one uses traditional OCL power amplifiers, which are large and weigh about 25Kg, relatively bulky, and the power amplifier tubes operate in the amplification region, prone to damage over time, with narrow dynamic range and low accuracy. The other uses switching power supply,
and the power amplifier uses digital amplifier, which is small, light, and efficient, representing the development direction of relay protection testers. The GH-6403 three-phase relay protection tester is a new type of miniaturized instrument realized by summarizing the advantages and disadvantages of similar products at home and abroad, extensively listening to user opinions,
and fully applying modern microelectronics and power electronics technology. It adopts international DSP and switching amplifier technology,
and its standalone operation capability is already very powerful. When paired with PC software, it can be connected to a computer for operation, while its size and weight are only half of traditional testers.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
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