A new miniaturized microcomputer relay protection tester that fully utilizes modern microelectronics technology and devices. It adopts a new structure that operates independently and can also be connected to a laptop for operation. 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.

1. The classic Windows XP operating interface is user-friendly and easy to operate. In order to facilitate user use, a large number of keyboard shortcuts have been defined, making the operation "one click in place"
2. High performance embedded industrial control computers and 8.4-inch high-resolution color TFT LCD screens can provide rich and intuitive information, including the current working status of the equipment, next step work prompts, and various help information
3. Equipped with an ultra-thin industrial keyboard and optical mouse, various operations can be completed through the keyboard or mouse just like operating a regular PC
4. Equipped with an external USB interface for convenient data access and software maintenance
5. Most projects can be tested without the need for external devices, automatically displaying and recording test data, and completing the depiction of vector diagrams and characteristic curves
6. By using a high-performance D/A converter, the waveform generated has high accuracy, good linearity, and excellent transient response and amplitude frequency characteristics. Ensure waveform accuracy and other performance requirements within the measurement range
7. The waveform generated by the algorithm used is accurate, different from the waveform generation method of curve fitting, ensuring that the signal is a pure sine wave
8. It can directly output AC voltage, AC current, DC voltage, DC current, with variable amplitude, phase, frequency, and 2-20th harmonic
9. The power amplification part adopts a new high-power high fidelity linear power amplifier circuit, which has high output power and low ripple interference. Each phase voltage can output 120V and current can output 30A. When the output current reaches 30A, the waveform can still ensure no distortion or peak shaving
10. It has 16 input ports and 8 pairs of output ports with open contacts. The input interface can automatically adapt to passive (air contact) and active inputs, and can automatically adapt to the polarity of active inputs. It can work normally within the input voltage range of ± 250V

AC current output
Output accuracy: Level 0.5
Phase current output (effective value): 3 * 40A
Triple current output (effective value): 0-120A
Long term allowable operating value (effective value) of phase current: 3 * 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
Harmonic frequency: 1-20 times
DC current output
Output accuracy: Level 0.5
Current output: 3 * 0 to ± 10A per phase, 3 * 0 to ± 30A per triple junction
Maximum output load voltage: 20V