SD-2 Leakage Current Tester Calibration Instrument

I. Introduction
The SD-2 Calibration Instrument is used to verify the voltage and current indication errors of leakage current testers. It consists of an adjustable resistor, an ammeter, a voltmeter, and an adjustable power supply.
II. Test Items and Main Technical Parameters

Calibration Object: Leakage Current Tester (with or without power supply)

Calibration Items: Error of ammeter and voltmeter
Model SD-2
Current Measurement Range 0.1～20mA
Current Measurement Accuracy Class 0.5
Voltage Measurement Range 50～300V
Voltage Measurement Accuracy Class 0.5
Operating Power Supply AC220V
III. Operating Environment and Requirements
1. Ambient Temperature 5～40℃
2. Relative Humidity ≤95%
3. Avoid direct sunlight or rain exposure