User manual for the Hezhong 701/702 microcomputer relay protection tester with specifications, operation, and maintenance instructions.
The manual introduces the 701/702 microcomputer relay protection tester, describing its technical compliance with GB/T7261‑2000 and DL/T624‑1997 standards. It explains the device’s functions, including a rotary‑mouse interface, PC‑linked operation, and automatic report generation.
Detailed sections cover technical specifications, working principles, panel layout, step‑by‑step operating procedures, PC software usage, troubleshooting tips, and service information such as firmware replacement and warranty support. This manual is written in Chinese.
| AC Phase Current Output (701 model) | 0‑30 A per phase |
|---|---|
| AC Phase Current Output (702 model) | 0‑40 A per phase |
| AC Voltage Output (701 model) | 0‑100 V (line voltage 0‑200 V) |
| Frequency Range (702 model) | 0‑1000 Hz |
| Power Output | 50 VA / 100 VA |
| Operating Temperature | -10 °C to +50 °C |
| Dimensions | 400 × 300 × 180 mm |
| Weight | ≈18 kg (701) / ≈16 kg (702) |
The tester operates from AC 220 V ±10 % at 50/60 Hz.
The 702 model can output up to 120 A of three‑phase combined AC current.