Specifications: Function: AC leakage current and current test Power supply: 6V DC (LR6X4 alkaline dry batteries, used continuously for 12 hours) Test mode: clamp CT, integration mode Jaw size: 80mmX 80mm (clamp φ 80mm conductor, or 96mm X 4mm flat steel ground wire) Measurement accuracy (23C ± 3 ° C, below 70% RH, the conductor is in the center of the jaw): 0.00mA~300A: soil 1.5% soil 3dgt 300A~1200A: ± 2% ± 3dgt 1200A~2000A: ± 3% ± 3dgt 2000A~2500A: 4% ± 3dgt Wire position: the tested wire is in the center of the jaw Data storage: 99 groups, displaying "FULL" symbol indicates that the storage is full RS232 interface: RS232 interface is provided to upload stored data to the computer for data analysis Communication line: RS232 communication line, 1.8m long Frequency: 50Hz, 60Hz automatic identification Gear shifting: fully automatic switching Sampling rate: about 2 times/second Line voltage: circuit test under AC 600V Display mode: 4-digit LCD digital display, length and width 47mmX28.5mm Instrument size: 275mm long x 145mm wide x 40mm thick Backlight: Yes, light key control Data retention: data retention function: "HOLD" symbol display Overflow display: over range overflow function: "0L" symbol display Automatic shutdown: no operation for about 5 minutes after startup, and the backlight automatically turns off; There is no operation after about 15 minutes of startup, and the instrument automatically shuts down after 10 seconds of flashing to reduce battery consumption. Press any key to cancel flashing Battery voltage: When the battery voltage drops to about 5.2 V, the low battery voltage symbol will be displayed to remind you to replace the battery Instrument weight: instrument: 830g (including battery) Working current: 50 mA for backlight; Backlight off 25mA Operating temperature and humidity: - 10 ° C~40 ° C; Below 80% rh Storage temperature and humidity: - 10C~60C; Below 70% rh Insulation strength: AC 3700V/rms (between iron core and shell) Applicable safety regulations: IEC1010-1, IEC1010-2-032, pollution level 2, CAT III (600V)