UT257A is a 3000A large current clamp with AC leakage current detection capability. Its large jaw (108mm× 148mm) is capable of clamping cables up to 108mm in diameter or 160mm×4mm at-steel ground wires.
Features of UT257A Large Jaws Leakage Clamp Meter
Auto range; RS-232
LCD backlight; Data hold
Over-range display
Auto power off
Low battery indication\
Specifications of UT257A Large Jaws Leakage Clamp Meter
| Specifications | Range | UT257A |
| Leakage current (A) | 0mA300A | |
| 0mA499A | ±(2%+5) | |
| 300A1200A | ||
| 500A999A | ±(3%+5) | |
| 1000A2999A | ±(4%+5) | |
| 1200A2000A | ||
| Voltage (Freq.) | ||
| Resolution | 0.1mA | |
| Test range | AC 0.0mA3200A | √ |
| AC voltage (V) | 0.00V600V | |
| Frequency: 50Hz/60Hz | ||
| Resolution | ||
| Features | ||
| Display mode | 4 digits LCD | |
| Clamp size | 108mm×148mm (can clamp φ 108mm wires, or 160mm×4mm flat- steel ground wires) | |
| Data logging | 99 | |
| Test mode | Clamp CT, integration | √ |
| General Characteristics | ||
| Power | 6V DC battery (LR6) x 4 | |
| Display | 47mm x 28.5mm | |
| Product color | Red and grey | |
| Product net weight | 1.5kg (with batteries) | |
| Product size | 350mm x 180mm x 55mm | |
| Standard accessories | Batteries, RS-232 interface cable, PC software CD | |
| Standard individual packing | Gift box, English manual, tool box | |
| Standard quantity per carton | 4pcs | |
| Standard carton measurement | 564mm x 428mm x 270mm | |
| Standard carton gross weight | 16.4kg | |
Malaysia
