I. Product Overview

ZY7821 transmission line power frequency parameter tester is my company developed, developed specifically for transmission line power frequency parameter measurement of high precision instrument, for a variety of voltage levels of transmission line power frequency parameters (including: Positive sequence impedance, positive sequence capacitance, zero sequence impedance, zero sequence capacitance, mutual inductance impedance, coupling capacitance, phase impedance, phase capacitance, line impedance, line capacitance, etc.) can be measured.

Two, technical indicators

1. Input characteristics

Voltage measuring range: 0~750V wide limit, one gear to ensure accuracy.

Current measuring range: 0~100A, all internal automatic switching range.

2. Accuracy

Voltage: plus or minus 0.2%

Current: plus or minus 0.5%

Power: ±0.5% (Cos φ > 0.1), ±1.0% (0.02 impedance, capacitive reactance, inductive reactance: 0.5%

Resistance, capacitance, inductance, conductance, susceptance: 0.5%

3, working temperature: -10℃~+40℃

4, working power supply: AC 85V~265V

5, insulation: ⑴, voltage, current input end of the insulation resistance of the housing ≥100M ω.

(2) The input end of the working power supply is subjected to power frequency 2KV (effective value) between the shell, and the experiment lasts for 1 minute.

6, volume: 32cm×24cm×13cm

7, weight: 3Kg