HCTT-250kV/0.5A Heavy-Duty Charging Transformer

Product Overview

The HCTT-250kV/0.5A sets new standards in high-power testing with 125kVA capacity and 0.5A output current, specifically engineered for long-duration industrial insulation tests and high-energy applications.

Technical Specifications

Performance Characteristics

Core Performance

• No-load Current: ≤8% of rated current

• Waveform Distortion: ≤8% THD at full load

• Over-voltage Withstand: 275kV (110%) for 60 seconds

• Efficiency: 92% at 80% load

Robust Design Features

Thermal Management

• Winding ΔT: ≤65K at full load

• Oil ΔT: ≤55K under maximum load

• Dual cooling systems:

• Natural convection (base cooling)

• Forced oil circulation (15m³/hour)

• Integrated oil temperature control (40-70°C range)

Insulation System

Mechanical Construction

• Reinforced steel tank (12mm walls) with corrosion coating

• Vibration-damped core assembly (2Hz natural frequency)

• Modular HV bushing design (replaceable without oil drainage)

• Integrated wheels with 5-ton capacity

Safety & Compliance

• IEC 60076-1 (Power Transformers)

• IEEE C57.12.90 (Test Code)

• EN 50588 (Industrial Applications)

• Dual Buchholz relays with alarm/trip contacts

Industrial Applications

• EHV cable system factory tests

• Power transformer impulse testing

• High-energy capacitor bank verification

• Industrial coating system power supplies

• Research facility high-power experiments

With its 125kVA capacity and 0.5A output current, the HCTT-250kV transformer enables testing of ultra-high capacitance loads (up to 6,600pF at 250kV). The heavy-duty design ensures reliable operation in continuous industrial testing environments.