HW702 Microcomputer Relay Protection TesterDetailed product description：

Main features of HW702 microcomputer relay protection tester

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 to four types of 3U0 or detect synchronous voltage, or output any voltage value.  
Single machine operation is convenient. The single machine is operated through a large LCD screen with a convenient and flexible rotating mouse, and all are 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, permanent, and conversion faults for whole group testing. Ready to use upon startup, easy and fast to operate.  
Dual operation mode, connected to a computer and running through the full set of 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.  
The software has powerful functions and can complete various large-scale complex verification tasks with high automation levels, 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.  
The switch contacts are rich, with 702 having 7 input contacts and 2 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.  
The large screen LCD display adopts a 320 × 240 dot matrix large screen high-resolution graphic LCD display. All operation processes are set on the display screen, and the operation interface and test results are displayed in Chinese, with intuitive and clear display.  
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.  
There is an independent dedicated DC power output device with one 110V and 220V dedicated adjustable DC power output.  

The HW702 microcomputer relay protection tester has high cost-effectiveness and is a cross disciplinary joint design product that integrates advanced technological achievements from multiple disciplines. Combining the performance of a large testing instrument with the price of a small testing instrument, it has a high cost performance ratio.

Rated parameters of HW702 microcomputer relay protection tester

AC current output
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 of 900VA at maximum output of triple current
Allowable working time of 10 seconds when the maximum output of the triple current is achieved
Frequency range (fundamental) 20-1000Hz
Harmonic order 1-20 times
DC current output
Output accuracy level 0.5
Current output: 0~± 10A per phase, 0~± 30A per triple junction
Maximum output load voltage 20V
AC voltage output
Output accuracy level 0.5
Phase voltage output (effective value) 0-120V
Line voltage output (effective value) 0-240V
Phase voltage/line voltage output power 80VA/100VA
Frequency range (fundamental) 20-1000Hz
Harmonic order 1-20 times
DC voltage output
Output accuracy level 0.5
Phase voltage output amplitude 0~± 160V
Line voltage output amplitude 0~± 320V
Phase voltage/line voltage output power 70VA/140VA
Measurement of switch quantity and time

Switch input with 7 empty contacts: 1-20mA, 24V
Potential contact connection: "0": 0~+6V; “1”：+11 V～ +250V
Switching output 2 pairs DC: 220V/0.2A; AC：220V／0.5A
Time measurement range: 0.1ms to 9999s, measurement accuracy: 0.1ms

volumetric weight
Dimensions 400 × 300 × 180mm ³
Single unit weight 22kg
Power supply AC 220V ± 10%, 50/60Hz
Environmental temperature -10 ℃~+50 ℃