■ Product Overview
According to the state grid "five" regulation "short circuit impedance test rules" and developed the measuring instrument. There are two test power supply modes: 1. Internal power supply: three-phase transformer test can be completed without external voltage regulator and one connection, which is simple and suitable for field test. 2. External power supply: apply test power supply through voltage regulator, suitable for indoor test.
■ Functional features
Display of three-phase voltage, three-phase current, three-phase power, three-phase short-circuit impedance (Zk), three phase short circuit reactance (Xk), three phase short circuit inductance (Lk), three phase short circuit impedance voltage (Zke), automatically calculate the transformer temperature conversion) percentage of impedance voltage, rated power flow, and the error percentage of the nameplate impedance. It can be used to check the defects of three-phase transformer single phase, the instrument can record three times of single phase measurement data, and can calculate the transformer impedance voltage and impedance voltage percentage error according to different transformer connections. After three single-phase tests, the calculation result of three-phase short-circuit impedance can be displayed. Automatic conversion of test results, with frequency correction, temperature conversion, current conversion, improve the comparability of test data. Vs-6309b has no-load and load test functions.
■ Technical parameters
▲ Voltage range: 15V ~ 500V; Measurement error: ±(reading x 0.2% ±0.05%(range))
▲ Current range: 0.5A ~ 50A; Measurement error: ±(reading x 0.2% ±0.05%(range))
▲ Power: 0.10 < COS φ < 1.0; Measurement error: ±(reading ×0.5% ±0.05%(range))
▲ 0.02 < COS φ < 0.1; Measurement error: ±(reading ×1.0% ±0.05%(range))
▲ Frequency (power frequency) : 45 ~ 65(Hz); Frequency error ≤±0.003Hz
▲ Short circuit impedance: 0 ~ 100%; Measurement error: ±0.5%
▲ Repeat stability: ratio difference < 0.2%, Angle difference < 0.2°
▲ Instrument display: 5 digits
▲ Expansion range: the voltage can be expanded to any value required by the voltage transformer (PT), and other parameters can be adjusted automatically according to the ratio of the transformer
