NR302B transmission line tester can accurately measure the power frequency parameters of various high-voltage transmission lines, including positive sequence capacitance, zero sequence capacitance, positive sequence impedance, zero sequence impedance, mutual inductance and coupling capacitance, phase-to-phase capacitance, etc. The instrument adopts an integrated structure with a built-in variable frequency power module, which can output power with variable frequency and voltage regulation. The use of digital filtering technology avoids the interference of power frequency electric field to the test, and fundamentally solves the problem of accurate measurement under strong electric field interference.
Overview
Models
Power supply | Three phase AC 380V±10% 50Hz | ||
Maximum output voltage | AC 200V Accuracy: 1% | ||
Maximum output current | 10A | ||
Output signal frequency | 45Hz/55Hz 47.5H/52.5Hz Interference current < 40A | ||
Measurement range | Capacitance | Impedance | Impedance angle |
0.1-50μF | 0.5-400Ω | 0°- 360° | |
Measurement resolution | 0.01μF | 0.01Ω | 0.01° |
Measurement accuracy | 0.1-1μF: ±3% ±0.05μF | 0.5-1Ω: ±3% ±0.05Ω | ±0.2° (voltage > 1.0V) |
1-50μF: ±1.5% ±0.03μF | 1-400Ω: ±3% ±0.03Ω | ±0.3° (voltage 0.2-1.0V) | |
Anti-interference parameters |
Interference voltage: the longitudinal induced voltage after connecting to the test power: <350V; Interference current: when both ends of the line are short-circuited to ground <40A; The test can be completed stably and accurately under the condition that the ratio of the instrument output signal to the interference signal is 1:10. |
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Operating environment |
Temperature: -15℃ ~ 40℃ Related humidity: < 90%. |