Relay Protection Tester
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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, using DSP chip control, 16-bit DAC output, can generate high-density sine wave of 2000 points per cycle for fundamental wave. Stable waveform quality improves the accuracy of the tester.
2. Standalone operation, the device is operated by a rotary mouse through a large LCD screen, with full Chinese display. It can calibrate various relays, protection and safety automatic devices on site, and can simulate various large and complex transient and converting faults for whole-set tests.
3. Connect to computer for operation, through the full Chinese operation software on Windows platform, can perform various large-scale complex and higher automation calibration work, can easily test and scan various protection settings, can store test data in real-time, display vector diagrams, draw fault waveforms, and print reports online.
4. LCD display uses 320×240 dot matrix graphic module, the operation interface is all in Chinese, clear and intuitive.
5. "Foolproof" operation, using advanced "rotary mouse" controller, eliminates complex keyboard operations, no computer knowledge required, easy to learn.
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 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 adopts 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 current, voltage, impedance, differential and other relays and protection devices
The instrument is a new intelligent test instrument developed in the past decade. Previous relay protection test tools were mainly composed of voltage regulators and phase shifters, which were bulky and inaccurate, and could no longer 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. Comprehensive automation of substations has become the mainstream. It has become an indispensable test tool for modern relay protection workers.
Modern ones can be divided into two forms: one uses traditional OCL power amplifier, which is large in size, weighs about 25Kg, relatively bulky, and the power amplifier tube works in the amplification region, which is easy to damage over time, with narrow dynamic range and low accuracy. The other uses switching power supply, and the power amplifier adopts digital power amplifier, which is small in size, light in weight, and high in efficiency, and is the development direction of relay protection testers. 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,
The standalone operation function is already very powerful, and 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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