KJ880 Microcomputer Relay Protection Test System
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Main Features:
1. Meets all on-site test requirements.
The KJ880 model features standard six-phase current and six-phase voltage simultaneous output, with current up to 30A per phase and voltage up to 125V per phase. Six-phase current in parallel can reach 180A. It can test various traditional relays and protection devices, as well as modern microcomputer protection devices. Especially for transformer differential protection and standby power supply automatic switching devices, testing is more convenient and accurate.
2. All technical indicators fully meet the standard of DL/T624-1997 "Technical Conditions for Microcomputer-based Test Equipment for Relay Protection" issued by the Ministry of Electric Power.
3. Standalone operation with built-in high-performance industrial computer, main frequency 300-600MHz, memory 128M, hard disk 6-12G, running Windows XP operating system.
4. The first in the domestic industry to adopt imported brushed stainless steel panel and stainless steel keyboard, also using touch mouse, overcoming the disadvantages of trackball mouse being inflexible and easily damaged. It features an 8.4-inch TFT true color display with resolution of 800×600, making the overall operation convenient and durable.
5. The main control board adopts DSP+FPGA structure with 16-bit DAC output, capable of generating high-density sine waves with 2000 points per cycle for the fundamental wave, greatly improving waveform quality and test accuracy.
6. The power amplifier uses high-fidelity linear amplifier, ensuring both accuracy at low currents and stability at high currents.
7. Uses USB interface for direct communication with PC, no need for any conversion cables, convenient to use.
8. Can be connected to a laptop for operation. The laptop and industrial computer use the same software, no need to relearn operation methods.
9. Equipped with GPS synchronization test function. The device can have a built-in GPS synchronization card (optional) connected to the PC via RS232 port, enabling two test instruments to perform synchronous remote testing at different locations.
10. Comes with an independent dedicated DC auxiliary voltage source output, providing output voltages of 110V (1A) and 220V (0.6A) respectively, to supply relays or protection devices requiring DC working power.
11. Has software self-calibration function, avoiding the need to open the chassis and adjust potentiometers to calibrate accuracy, greatly improving accuracy stability.
Hardware Composition of the Device:
1. Built-in high-performance industrial control computer
This device uses a high-performance industrial computer as the control computer, configured with 128M memory, 6~12G hard disk, pre-installed Windows XP operating system, panel with 8.4" 800×600 resolution TFT true color LCD display, stainless steel optimized keyboard and touch mouse, can be used directly without external keyboard and mouse. The device panel is equipped with two USB interfaces for convenient data storage, data communication, and software upgrades.
2. DSP digital signal processing system
Uses 6000 series DSP controller as the core, FPGA programmable logic device outputs waveforms. Due to the DDS hardware output waveform technology, waveform frequency and phase accuracy are quite high. Meanwhile, the system communicates with the industrial computer directly via USB2.0 interface, making data communication stable and reliable.
3. D/A and A/D conversion
Uses high-precision D/A converter, and also uses active low-pass filter to make output waveform smooth with excellent amplitude-frequency characteristics. The control system also retains 12 channels of 12-bit A/D conversion circuits, which can collect the output waveforms of 12 analog quantities in real time and display the actual output waveform, amplitude, and phase on the screen through software.
4. Microcomputer relay protection test system High-precision linear voltage and current power amplifier
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
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