Generator Set Power Frequency Withstand Voltage System For Transformer

Composition :
1. HM-YDJ-200kVA/22kV/35kV Power Frequency AC Withstand Voltage Test Transformer 1 unit

2. HM-TC-200/35/22 Power Frequency AC Withstand Voltage Test Console 1 unit

3. HM-TDY-200kVA/0.4kV Motor-Driven Voltage Regulator 1 unit

Model: YDJ-200kVA/22kV/35kV

Rated Capacity: 200kVA

Input Voltage: 0.4kV

Input Current: 500A

High-Voltage Winding: 22kV/9A

High-Voltage Winding: 35kV/5.71A

Overcurrent Capacity: When operated at 100% In rated current for (240) minutes, the overcurrent shall not cause thermal damage or deformation to the test transformer windings.

Overvoltage capability: Under an overvoltage of 110% UH (38.5 kV) for 30 minutes, no insulation damage shall occur to the test transformer, and the waveform distortion rate shall be ≤5%.

Insulation level: Power frequency withstand voltage level of 5 kV/1 min between low-voltage input terminals and ground

Dielectric loss: <0.3%

Noise: ≤60 dB

Model: HMTC-200/22/35

Number of Phases: Single-phase

Frequency: 50 Hz

Rated Input Capacity: 50 kVA

Operating Voltage: 0.38 kV

Input Current: 131.5 A

Rated Output Capacity: 200 kVA

High-Voltage Current: 9A/5.7A

Instrument Voltage: 0.1kV

Waveform Distortion Rate: ≤3%

Operating Time: ≤ (240 minutes)

Dimensions: 700/1000 × 1200

Weight: <100kg

• 17-inch LCD touchscreen display, human-machine interface (HMI), and PLC control.
• Intuitive display of voltage ramp-up/ramp-down curves, timed withstand voltage curves, and operational status modes.
• Equipped with a high-energy power compensator; software automatically applies compensation power.
• Voltage resolution: 0.01 kV;
• Current resolution: 1 mA;
• Stepper motor drive system with configurable voltage ramp-up rate.
• High-precision sensors and high-performance 14-bit AD conversion chip.
• Full-keyboard HMI operation with intelligent control throughout the entire process.
• Flexible and simple operation with optional automatic or manual voltage ramp-up/ramp-down testing.
• Real-time display of test transformer high-voltage, low-voltage current, high-voltage current, and withstand time.
•  Test data can be printed and exported via USB/RS-232 for communication and operation with a host computer.
•  Comprehensive overcurrent protection; target output voltage and voltage upper limits can be freely set.
•  Output voltage can be freely adjusted; automatic gain control ensures output balance.
•  Equipped with a zero-return detection function; testing can only proceed after zero return is confirmed, ensuring safety and reliability.
•  Incremental voltage-rising algorithm: automatically starts the withstand voltage timing upon reaching the set target output voltage; the regulator motor automatically returns to zero after timing ends.
•  If the set output voltage upper limit is exceeded, the regulator motor automatically returns to zero, and an audible and visual alarm is triggered.
•  Automatic power compensation / manual operation.
•  Equipped with a safety door lock function.
• Features a three-stage voltage-rising function.