Overview:
Three-Phase Microcomputer Relay Protection Calibration Instrument is a new type of miniaturized microcomputer relay protection tester, realized by summarizing the advantages and disadvantages of similar products at home and abroad, extensively listening to user opinions, and fully utilizing modern microelectronics and power electronics technology. It adopts internationally popular DSP and switching amplifier technology, and its standalone operation capability is already very powerful. Combined with PC software, it can be connected to a computer for operation, adding further functionality. Its volume and weight are only half of traditional testers, and its advanced design concept has brought this tester to an international advanced level.
Technical Parameters
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
Voltage Source:
AC Amplitude: 0～125V/phase, line voltage 0---250V
DC Amplitude: 0—110V/phase
Auxiliary Power VZ: 3V0 0～150VAC or 0—220VDC
Maximum Power: 50VA/phase, Accuracy: 0.2%, Response time <120μs
Resolution: AC 2.5mV, DC 3.5mV
Frequency: Range 0—1000Hz, Resolution 0.001Hz (power frequency), 0.1Hz (1KHz)
Phase: Range 0—360 degrees, Resolution: 0.1 degree, Accuracy: 0.1 degree
Switch Inputs: 7 pairs of dry contacts or potential flip (5—250VDC)
Switch Outputs: 3 pairs, 0.5A/250VAC
Supply Voltage: 120V～250VAC 50/60Hz
Chassis Dimensions: 450mm×150mm×370mm
Weight: 11.6kg
Main Features:
Three-Phase Microcomputer Relay Protection Calibration Instrument features an intelligent main unit, controlled by a DSP chip with 16-bit DAC output, capable of generating high-density sine waves with 2000 points per cycle for the fundamental wave, representing the highest level among domestic testers. This greatly improves waveform quality and enhances the accuracy of the tester.
Standalone operation: The device is operated via a rotary mouse through a large LCD screen, with full Chinese display. It can calibrate various relays, protections, and automatic safety devices on site, and can simulate various large and complex transient, permanent, and converting faults for full-set testing.
Computer connection: Through a full Chinese operating software on Windows98 platform, it can perform various large-scale, complex, and highly automated calibration tasks, conveniently test and scan various protection settings, store test data in real-time, display vector diagrams, plot fault waveforms, and print reports online.
The LCD display uses a 320×240 dot matrix graphic module, with all operation interfaces in Chinese, providing intuitive and clear display.
"Foolproof" operation: Adopting advanced "rotary mouse" controller, eliminating complex keyboard operations, no computer knowledge required, easy to learn and operate.
The whole unit uses switching power supply and switching amplifier technology, small size, light weight, only 11.6 kg.
Modular design: All plug-ins are completely independent; hardware maintenance and upgrades can be achieved by simply replacing plug-ins.
Flexible configuration: Can be configured as 6-phase current, 5-phase voltage + 2-phase current, etc.
Users can calibrate the accuracy of the tester via software.
Can replay fault recording data in Comtrade format.
Designed with power factor correction circuit according to international standards, making the device efficiency as high as 95% or more.
