HWYJ-III Secondary voltage drop testerDetailed product description：

HWYJ-III Secondary Voltage Drop Tester

Excessive comprehensive error in electric energy measurement is a common key problem in electric energy measurement. The comprehensive error in electric energy measurement is composed of measurement errors caused by the combined errors of voltage transformers, current transformers, electricity meters, and secondary wire voltage drops of voltage transformers. Among these four errors, the measurement error caused by the voltage drop of the secondary wire of the voltage transformer is often the largest. The Verification Regulations for Electric Energy Metering Devices (SD109-83) and relevant technical regulations stipulate that errors caused by voltage drop in the secondary circuit of voltage transformers must be accurately, quickly, conveniently, and reliably measured.

Technical specifications of HWYJ-III secondary pressure drop tester
1. Environmental conditions
Temperature: - C ° 5 to C ° 40
Relative humidity:<95% (C ° 25)
Altitude:<2500m
External interference: no particularly strong vibrations, no particularly strong electromagnetic fields

2. Main technical indicators of the instrument during the secondary pressure drop test
1). Measurement range: Ratio difference: 0.001% to 19.99% Angle difference: 0.01 'to 599'
2). Resolution: Ratio difference: 0.001% Angle difference: 0.01 '
3). Basic instrument error
2 ± (1% × X+1% × Y ± X=D characters);
2 ± (1% × X+1% × Y ± Y=D characters).
Two words - quantification error of the instrument
4). Voltage meter accuracy: 0.5%
5). scope of work
Voltage: (50-120) V
6). Instrument indication action value
Error: The ratio difference is greater than 20% or the angle difference is greater than 600 '.
Voltage: Voltage<2.0V.