HMCXZW 300KV PD Free AC Resonant Test System Goldhome

HMCXZW-300kVA 300kV Partial Discharge-Free AC Resonant Test System, in which the partial discharge-free frequency conversion power supply is the main component of the complete test system. This test system is suitable for:

1.1 Inductive withstand voltage and partial discharge tests on power transformers.

1.2 AC withstand voltage and partial discharge tests on current transformers and other devices.

1.3 AC withstand voltage tests on power cables.

1.4 AC withstand voltage testing of GIS (Gas-Insulated Switchgear).

1.5 AC withstand voltage testing of capacitive equipment such as circuit breakers, isolating switches, insulators, and bushings.

1.6 Power frequency withstand voltage testing of large-scale generator sets.

1.7 Power supply for testing large-scale grounding grids.

• 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 Voltage Instability: ≤1.0%

  8 Nonlinear Distortion: ≤1%

  9 Partial Discharge: ≤10 pC (measured on the high-voltage side of the step-up transformer)

  10 Operating Conditions: Temperature: –10°C to +45°C; Humidity: 10–90% RH; Altitude: ≤1,000 meters

  11 Cooling Method: Forced air cooling

  12 Dimensions: 1,800 × 800 × 1,800

  13 Weight: 1,500 kg

  14 Noise Level: < 85 dB

1. Excellent equivalence. The device outputs a sine wave with minimal waveform distortion. The waveform distortion rate is <3%.

2. Fiber-optic control is used to completely isolate the high-voltage and low-voltage control circuits.

3. Safe and reliable, this device incorporates multiple protection features, including: discharge breakdown protection, overvoltage setpoint protection, output short-circuit protection, power-on zero-point protection, bridge arm amplification circuit protection, and power curve protection.

4. The signal source is generated by a dedicated chip and controlled by a microcomputer, ensuring high output frequency stability down to 0.01 Hz.

5. The variable-frequency output voltage is controlled by a high-speed microcomputer from TI, with output voltage instability <1%.