It adopts a new structure that can run independently or be connected to a laptop. The host is equipped with a new generation high-speed digital signal processor microcomputer, a true 16 bit DAC module, a new modular high fidelity high-power amplifier, a large screen LCD display, and a flexible and convenient rotating mouse controller. Single machine operation already has strong functionality and can perform most experiments

1. The standard 4-phase voltage and 3-phase current output has a 4-phase voltage and 3-phase current output, which can be easily combined for various types of protection tests. Each phase voltage can output 120V, and the current can output 120A in three parallel. The fourth phase voltage Ux is a multifunctional voltage item, which can be set as four types of 3U0 or detected for synchronous voltage, or output for a certain voltage value.
2. Single machine operation is convenient. The single machine is operated through a large LCD screen with a convenient and flexible rotating mouse, and displayed in Chinese. It can complete most of the on-site testing and verification work, verify various relays and microcomputer protections, and simulate complex instantaneous, long-term, and conversion faults for whole group testing. Ready to use upon startup, easy and fast to operate.
3. Dual operation mode, connected to a computer and running through Chinese operating software on the Windows platform, can perform various large-scale, complex, and highly automated verification tasks. It can easily test and scan various protection settings, store test data in real time, display vector graphics, draw fault waveforms, and print reports online.
4. The software has strong functionality and can complete various large-scale complex verification tasks with high automation, such as three-phase differential testing, plant power fast switching, backup automatic switching testing, line protection check synchronous reclosing, etc. It can easily test and scan various protection settings, perform fault playback, store test data in real time, display vector graphics, and print reports online.
5. Rich switch contacts with 7 input contacts and 3 pairs of output contacts. The input contacts are compatible with empty contacts and 0-250V potential contacts, and can be intelligently and automatically recognized. The input and output contacts can be expanded according to user needs.
6. The large screen LCD display adopts a 320 × 240 dot matrix large screen high-resolution graphic LCD display. The operation process is set on the display screen, and the operation interface and test results are displayed in Chinese, with intuitive and clear display.
7. Self protection adopts a reasonably designed heat dissipation structure, with reliable and complete multiple protection measures, power soft start, and certain fault self diagnosis and locking functions.

Output accuracy: Level 0.5
Phase current output (effective value): 0-40A
Triple current output (effective value): 0-120A
Long term allowable operating value (effective value) of phase current: 10A
Maximum output power of phase current: 420VA
Maximum output power at maximum output of triple current: 900VA
Allowable working time for maximum output of triple current: 10s
Frequency range (fundamental): 20-1000Hz