Product Introduction:
Industrial Control Three-Phase Microcomputer Relay Protection Test Instrument features standard four-phase voltage and three-phase current output, with voltage of 125V per phase and current of 40A per phase. Three-phase parallel connection can reach 120A. It can test various traditional relays and protection devices, as well as modern microcomputer protection systems. In particular, it makes testing transformer differential protection and standby power supply automatic switching devices more convenient and perfect. The instrument uses a high-speed, high-performance digital control processor as the control microcomputer, and employs double-precision algorithms in software to generate high-precision waveforms of any phase. It also uses high-speed, high-bit D/A converters to ensure the accuracy and linearity of current and voltage across the entire range. It has been widely used in line protection, main transformer differential protection, excitation control, and other fields. Substation integrated automation has become the mainstream.
Product Features:
1.Flexible combination of voltage and current output Output up to 4-phase voltage and 3-phase current, can be arbitrarily combined to achieve conventional 4-phase voltage and 3-phase current output modes, compatible with various traditional test methods, and also convenient for three-phase transformer differential tests and auxiliary power fast switching and standby power supply automatic switching tests.
2、Operation method The device is directly connected to an external laptop or desktop computer for operation, which is convenient and stable.
3、Three-phase relay protection calibration instrument, microcomputer relay protection test instrument, three-phase protection test instrument new high-fidelity linear power amplifier The output stage consistently uses high-fidelity, high-reliability modular linear power amplifiers, rather than switching power amplifiers, with excellent performance. It will not cause high-frequency or intermediate-frequency interference at the test site, and ensures smooth waveform and excellent accuracy from large currents to subtle currents throughout the entire range.
4、High-performance host The output part uses DSP control, with fast computation speed, strong real-time digital signal processing capability, wide transmission bandwidth, and control of high-resolution D/A conversion. The output waveform has high accuracy, low distortion, and good linearity. Many advanced technologies and precision components and materials are used, and professional structural design is adopted, so the device is small in size, light in weight, full in function, and easy to carry. It can work immediately after power-on, making field tests very convenient.
5、Powerful software functions It can complete various highly automated large-scale complex calibration tasks, conveniently test and scan various protection settings, perform fault replay, store test data in real-time, display vector diagrams, and print reports online. 6-phase current can conveniently perform three-phase differential protection tests.
6、Independent dedicated DC power output It is equipped with one 110V and one 220V dedicated DC power output.
7、Complete interfaces The device is equipped with a USB communication port, which can communicate with computers and other external devices.
8、Comprehensive self-protection functions The heat dissipation structure is designed reasonably, hardware protection measures are reliable and complete, with soft-start power supply function, software self-diagnosis of faults, and output blocking functions.
Technical Parameters:
1、AC current output
Output accuracy: 0.2 class
Phase current output (RMS): 0～40A
Three-phase parallel current output (RMS): 0～120A
Phase current long-term allowable working value (RMS): 10A
Phase current maximum output power: 420VA
Maximum output power when three-phase parallel current is at maximum: 900VA
Allowable working time when three-phase parallel current is at maximum: 10s
Frequency range (fundamental): 20～1000Hz
Harmonic order: 1～20 times
2、DC current output
Output accuracy: 0.2 class
Current output: 0～±10A / per phase, 0～±30A / three-phase parallel
Maximum output load voltage: 20V
3、AC voltage output
Output accuracy: 0.2 class
Phase voltage output (RMS): 0～120V
Line voltage output (RMS): 0～240V
Phase voltage/line voltage output power: 80VA / 100VA
Frequency range (fundamental): 20～1000Hz
Harmonic order: 1～20 times
4、DC voltage output
Output accuracy: 0.2 class
Phase voltage output amplitude: 0～±160V
Line voltage output amplitude: 0～±320V
Phase voltage/line voltage output power: 70VA / 140VA
5、Switch quantity and time measurement
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