Hardware Structure of Six-Phase Microcomputer Relay Protection Test System Device


Six-Phase Microcomputer Relay Protection Test System DeviceBuilt-in High-Performance Industrial Control Computer



This device uses a high-performance industrial control computer as the control computer, configured with 128M memory, 6~12G hard disk, pre-installed with Windows XP operating system. The panel is equipped with an 8.4″800×600 resolution TFT true color LCD display, stainless steel optimized keyboard and touch mouse, which 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.



Six-Phase Microcomputer Relay Protection Test System Device DSP Digital Signal Processing System



Using a 6000 series DSP controller as the core, and FPGA programmable logic device to output waveforms. Due to the adoption of DDS hardware output waveform technology, the waveform frequency and phase accuracy are quite high. At the same time, the system communicates with the industrial control computer directly via USB2.0 interface, making data communication stable and reliable.



Six-Phase Microcomputer Relay Protection Test System Device D/A and A/D Conversion



Using high-precision D/A converters, and also using active low-pass filters to make the output waveform smooth with excellent amplitude-frequency characteristics. At the same time, 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.



Six-Phase Microcomputer Relay Protection Test System Device High-Precision Linear Voltage and Current Power Amplifier



The current and voltage use high-performance linear amplifiers with direct coupling output, so that the current and voltage sources can directly output AC and DC waveforms, and can output various combined waveforms such as square waves, superimposed harmonics, and fault transient waveforms through software calculation, which can better simulate the current and voltage characteristics during various short-circuit faults. The power amplifier circuit uses imported high-power high-fidelity modular power devices as the power output stage, combined with carefully designed heat dissipation structure, with sufficient power redundancy and thermal capacity. The power amplifier circuit has complete overheat, overcurrent, overvoltage, and short-circuit protection. The current loop allows open circuit without damaging the device. The panel has a current open circuit indicator light to facilitate users to check whether the wiring is correct. At the same time, the panel also has a voltage overload or short-circuit indicator light. When a short circuit occurs in the voltage loop (when there is output), the indicator light will light up and activate the buzzer alarm. The large current time limit adopts a unique hardware time limit circuit, overcoming the shortcomings of traditional software time limit, making the use of large current safer and more reliable.