DRJB830 Microcomputer Relay Protection Tester - Yangzhou Darui
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DRJB830 Microcomputer Relay Protection Tester Features:
1 , Testing of all individual components in secondary dispatching (current, voltage, time, differential, balance, negative sequence, distance, power direction, inverse time, frequency, synchronization, reclosing relays, etc.).
2 , Complete set transmission, can simulate various simple or complex transient, permanent, and converting faults, and can superimpose transient DC components on the fundamental wave.
3 , Can arbitrarily superimpose various harmonics, with online controllable initial angle and content of superposition.
4 , Can output AC quantities of different frequencies per phase, dual-use for AC and DC.
5 , Dedicated low-frequency unit, convenient for testing microcomputer low-frequency protection and generator-related protection control circuits.
6 , Automatic and manual testing, static and dynamic testing modes can be freely selected; test settings, result data, and curves can be archived and printed.
7 , Automatic testing of differential percentage braking characteristics for microcomputer main transformer protection.
8 , Automatic testing of complete distance and zero-sequence protection.
9 , User-programmable test unit to meet special test purposes.
DRJB830 Microcomputer Relay Protection Tester Functions:
1. This microcomputer relay protection test system can simultaneously output standard six-phase current and six-phase voltage, compatible with traditional relay and protection device tests, and also convenient for transformer differential tests and standby power supply automatic switching tests.
2. This product meets the technical requirements of the power industry standard DL/T624-1997 "Technical Conditions for Microcomputer Test Devices for Relay Protection".
3. Standalone operation, built-in high-performance industrial computer, main frequency 300-600MHz, memory 512M, hard disk 4-12G, running WindowsXP operating system.
4. The main control board adopts DSP+FPGA structure, 16-bit DAC output, can generate high-density sine waves of 2000 points per cycle for the fundamental wave, greatly improving waveform quality and test accuracy.
5. The power amplifier adopts high-fidelity linear power amplifier, ensuring both small current accuracy and large current stability.
6. First in China to adopt imported brushed stainless steel panel, equipped with ultra-thin industrial computer keyboard and mouse, all operations can be completed through keyboard and mouse like using a normal PC.
7. The instrument has 3 USB communication interfaces, can be connected to a laptop for operation, and the laptop uses the same software as the industrial computer, no need to relearn operating methods.
8. Equipped with GPS synchronization test function, the device can be built-in GPS synchronization card (optional) connected to PC via RS232 port, enabling two instruments to perform remote synchronous adjustment tests.
9. Equipped with independent dedicated DC auxiliary voltage source, output voltages are 110V (1A) and 220V (0.6A) respectively, to provide DC working power for relays or protection devices that need it.
10. Perfect self-protection function, reasonable heat dissipation structure design, reliable and complete hardware protection measures, with fault self-diagnosis and output blocking functions.
11. Has software self-calibration function, no need to open the chassis to adjust potentiometers for calibration, greatly improving accuracy stability.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
