This manual introduces the features of UT581/582 products, including safety tips, characteristics, technical specifications, instrument appearance and accessories, measurement methods, maintenance and repair, etc.
This manual introduces the UT581/UT582 testing instrument, covering its appearance, accessories, measurement methods, and routine maintenance. It emphasizes safety precautions, proper wiring checks, and the use of certified test leads.
Technical specifications, such as operating voltage, current range, measurement accuracy, and special functions like AUTO RAMP and shutdown alarms, are listed, along with detailed safety symbols and symbols used throughout the document. This manual is written in Chinese.
| Rated trigger current | 250 mA (fast trigger) |
|---|---|
| Maximum test time display | "0L ms" indicates over‑range |
| Wiring check indicator | Green P‑E and P‑N LEDs on, red LED off = correct wiring |
When the two green LEDs (P‑E and P‑N) are lit and the red LED is off, the wiring is correct; otherwise the wiring or grounding is faulty.
If the measured time exceeds the maximum test time, the LCD shows "0L ms" to indicate an over‑range condition.