The manual provides overview, specifications, operation steps, maintenance and safety instructions for the Hezhong Electric HZZY‑II DC resistance tester.
The HZZY‑II DC resistance tester is designed for measuring the contact resistance of transformer windings, low‑voltage switches, instrument transformers and motor windings. It offers high accuracy, high sensitivity and automatic zero‑adjustment, and can be used with both AC and DC power sources, making it suitable for field measurements where mains power is unavailable.
The document includes sections on the instrument overview, main technical specifications, detailed operating procedures, a list of supplied accessories, and guidelines for maintenance and repair. It also provides safety notes and troubleshooting tips for reliable use. This manual is written in Chinese.
| Measurement range | 1µΩ—200KΩ |
|---|---|
| Power supply | AC220V±10% 50Hz with built‑in DC source |
When the instrument is set to the 20 mΩ or 200 mΩ range and in the charging state, adjust the zero‑adjustment potentiometer until the display reads zero; other ranges auto‑zero.
The AC and DC switches are mutually exclusive; when the AC switch is engaged, the DC switch is released, and vice versa.
The package contains one main unit, a set of test leads, two fuses, a power cord, a certificate, and the user manual.