Partial Discharge Variable Frequency AC Resonant Test System

HMCXZW-1750kVA/500kV Partial Discharge-Free AC Variable-Frequency Series Resonance Test System, manufactured by Wuhan Goldhome Hipot, can simultaneously perform AC withstand voltage tests and partial discharge tests. It is suitable for acceptance and preventive testing of high-voltage electrical equipment.

Typical Test Objects and Configurations:

115 kV GIS: Test voltage 235 kV

230 kV GIS: Test voltage 425 kV

115 kV cross-linked cable (cross-sectional area 800 mm², length 1 km, capacitance 0.226 μF): Test voltage 128 kV

• Input Voltage 380V ±10% (three-phase) / 50Hz
• Rated Output Power 75kW
• Rated Capacity 1750kVA
• Output Voltage Up to 500kV
• Output Current 3.5A
• Frequency Range 20Hz to 300Hz
• Frequency Resolution 0.1Hz
• Waveform Distortion ≤1%
• Partial Discharge Level ≤10 pC (at 500 kV)
• Rated Operating Time 180 minutes
• Noise Level ≤85 dB
• Temperature Rise ≤65 K (after 180 minutes at rated load)
• Quality Factor Q ≥30 (f=45 Hz)
• Measurement Accuracy RMS Class 1.0
• Compliance Standard IEC 60060