This document is a user manual for the digital clamp meter KEW 2055A, which describes the features and functions of the product, including compliance with international safety specifications, comfortable grip, data hold function, LCD backlight function, REL function, MIN/MAX function, etc.
This manual provides safety warnings, preparation steps and detailed operating instructions for the KEW 2055A clamp meter. It covers AC/DC current, voltage, resistance, continuity, diode testing, frequency measurement and special functions such as NCV, MIN/MAX, HOLD and auto‑shutdown.
Technical specifications, battery replacement procedures, maintenance tips and warranty information are also included, helping users achieve accurate measurements while complying with IEC 61010 safety standards. This manual is written in Chinese.
| AC current range | 0–600 A (600 A) / 600–1000 A (1000 A) |
|---|---|
| DC current range | 0–600 A / 600–1000 A |
| AC voltage range | 0–600 V (auto‑range, 10 MΩ input impedance) |
| AC voltage accuracy | ±1.2 % rdg + 4 digit (50/60 Hz) |
| DC voltage range | 0–600 V (auto‑range, 10 MΩ input impedance) |
| DC voltage accuracy | ±1.0 % rdg + 3 digit |
| Resistance accuracy | ±1.0 % rdg + 3 digit |
| Frequency range | 40 Hz – 400 Hz |
| Frequency accuracy | ±0.5 % rdg + 5 digit |
| Jaw diameter | 40 mm |
| Overall dimensions (L×W×H) | 243 mm × 77 mm × 36 mm |
| Weight | ≈310 g |
| Over‑voltage protection | 6880 V AC (TRMS 50/60 Hz) for 5 s |
| Insulation resistance | >10 MΩ at 1000 V |
| Battery type | AAA (RO3) or LR03/15 V |
‘OL’ indicates that the input exceeds the selected measurement range; the instrument cannot display a value beyond its range.