Chinese user manual for the HZYF‑II secondary voltage‑drop and load testing instrument, covering safety, operation, specifications and maintenance.
The HZYF‑II secondary voltage‑drop and load tester is designed for accurate measurement of secondary voltage‑drop, CT and PT load on power metering devices. It features a large Chinese‑character LCD, automatic range switching, and a 7.2 V 11 Ah lithium‑ion battery for up to 24 hours of continuous operation.
The manual provides safety guidelines, panel description, step‑by‑step testing procedures, calibration methods, troubleshooting tips, warranty information and a list of accessories. It also includes wiring diagrams for CT and PT load verification. This manual is written in Chinese.
| Operating temperature range | -5 °C to 40 °C |
|---|---|
| Operating humidity | <95 % (25 °C) |
| Voltage measurement range | 50 V to 120 V |
| Secondary voltage‑drop measurement range (ratio) | 0.001 % to 19.99 % |
| Secondary voltage‑drop measurement resolution (ratio) | 0.001 % |
| Voltage meter accuracy | ±0.5 % |
| Maximum continuous operation time on battery | 24 hours |
Reverse the direction of the clamp meter (钳表) to correct the sign of the load measurement.