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Products Description
HMCXZW-300kVA 300kV Partial Discharge-Free Variable-Frequency Series Resonance Unit-High-Voltage AC Withstand Test + High-Precision Partial Discharge Two-in-One Test Power Supply, specifically designed for factory quality inspection of high-voltage equipment such as transformers, GIS, long cables, and current transformers. This 300kVA medium-to-large-capacity partial discharge-free system can accommodate long-distance 220kV cables, high-capacity GIS, and large main transformers for simultaneous withstand voltage and partial discharge testing; the frequency is adjustable from 30 to 300 Hz, compatible with power-frequency withstand voltage and transformer induction withstand voltage (100/150 Hz).
Technical parameter
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1 Rated Input Voltage: Three-phase AC 400 V ±10%, 50 Hz
2 Rated Output Power: Single-phase 300 kW
3 Output Frequency Range: 20 Hz to 300 Hz, continuously adjustable
4 Rated Output Voltage: 0 to 350 V, continuously adjustable
5 Rated Output Current: 0 to 857 A, continuously adjustable
6 Frequency Instability: ≤0.05%
7.Partial Discharge: ≤10 pC (measured on the high-voltage side of the step-up transformer)
8. Dimensions: 1,800 × 800 × 1,800
9. Weight: 1,500 kg
10.Noise Level: < 85 dB
working Principle Schematic Diagram
Schematic Diagram of the Bridge Amplifier Circuit for the HMCXZW Variable-Frequency Power Supply Unit
fAQ
Q: What to do If a Communication Failure Occurs in a Variable-Frequency Power Supply
A:Reconnect the fiber optic cable or replace it.
Q:How to Troubleshoot Power Curve Issues
A: Reducing the turns ratio of the excitation transformer lowers the output current of the variable-frequency power supply while maintaining a high output voltage.
Q: Why Is the Variable Frequency Drive Cabinet Beeping?
A: A single-phase fault in the fiber optic cable, or a loose connector.
Company overview
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