This document introduces the features and functions of the digital clamp meters KEW-2040 and KEW-2055, including compliance with international safety standards, comfortable grip, data hold function, LCD backlight function, REL function, MIN/MAX function, etc.
The manual begins with safety and warning information, describing the IEC‑61010 compliance, protection class, and proper handling to avoid electric shock or equipment damage. It also lists the physical design features such as double‑layer housing, backlight (KEW‑2055 only), and battery‑saving auto‑off.
Subsequent sections detail measurement functions—including AC/DC current, voltage, resistance, continuity, diode test, frequency/DUTY, and NCV—along with range selection, zeroing, MIN/MAX, HOLD, and backlight operation. Technical specifications, battery replacement, and maintenance procedures are also covered. This manual is written in Chinese.
| AC current range (KEW‑2040) | 0 ~ 600 A |
|---|---|
| AC current accuracy (KEW‑2040/KEW‑2055) | ±1.5 % rdg + 5 digits (50/60 Hz) |
| AC voltage range (auto‑range) | 6 V / 60 V / 600 V |
| AC voltage input impedance | 10 MΩ |
| Battery type | AAA or LBRO3/15 V |
Press and hold the HOLD key for more than 2 seconds to turn the backlight on; press and hold it again for 2 seconds to turn it off.
Read all warnings, avoid measuring over 600 V DC, do not use in flammable atmospheres, keep the instrument dry, and never measure with exposed conductors that could cause short circuits.