Description
The variable-frequency automatic dielectric loss tester is a high-precision testing instrument used in power plants, substations, and laboratories to measure the dielectric loss tangent value and capacitance of various high-voltage power equipment. The instrument features an integrated design, incorporating a built-in dielectric loss test bridge, variable-frequency regulated power supply, step-up transformer, and a high-stability SF6 standard capacitor. The high-voltage test source is generated by an internal inverter and then stepped up by the transformer for testing the sample. The frequency can be varied to 50Hz, 47.5Hz/52.5Hz, 45Hz/55Hz, 60Hz, 57.5Hz/62.5Hz, and 55Hz/65Hz.
| Item | Specification |
| Operating Conditions | -15℃~40℃，RH＜80% |
| Anti-interference Principle | Frequency Conversion Method |
| Power Supply | AC220V±10% (generator allowed) |
| High Voltage Output | 0.5kV~10kV |
| Step: 0.1kV | |
| Accuracy: 2% | |
| Max Current: 200mA | |
| Capacity: 2000VA | |
| Self-excited Power Supply | AC0V~50V/15A |
| Frequency Combinations: 45Hz/55Hz, 47.5Hz/52.5Hz, 55Hz/65Hz, 57.5Hz/62.5Hz | |
| Mode: Automatic Dual Frequency Conversion | |
| Resolution | tgδ: 0.001% |
| Cx: 0.001pF | |
| Accuracy | Δtgδ: ±(reading×1.0%+0.040%) |
| ΔCx: ±(reading×1.0%+1.00pF) | |
| Measurement Range | tgδ: No limit |
| Cx: 15pF＜Cx＜300nF | |
| 10kV: Cx＜60nF | |
| 5kV: Cx＜150nF | |
| 1kV: Cx＜300nF | |
| CVT Test: Cx＜300nF | |
| LCR Measurement Range | L＞20H (2kV) |
| R＞10kΩ (2kV) | |
| LCR Measurement Accuracy | 3% |
| Angle Resolution: 0.01 | |
| CVT Ratio Range | 10~10000 |
| CVT Ratio Accuracy | 0.10% |
| Ratio Resolution: 0.01 | |
| Dimensions (Main Unit) | 350(L)×270(W)×270(H) mm |
| Dimensions (Accessory Case) | 350(L)×270(W)×160(H) mm |
| Memory Capacity | 200 groups (supports USB data storage) |
| Weight (Main Unit) | 23.5kg |
| Weight (Accessory Case) | 5.25kg |
