HCTT-240kV/0.25A Ultra-Low Partial Discharge Transformer

Product Overview

Designed for sensitive high-voltage measurements, the HCTT-240kV/0.25A delivers exceptional 60kVA performance with industry-leading ≤5pC partial discharge levels at rated voltage, making it ideal for partial discharge testing systems.

Technical Specifications

Performance Highlights

Critical Parameters

• Partial Discharge: ≤5pC @ 240kV, ≤3pC @ 192kV

• No-load Loss: <10% of rated current

• Waveform Purity: ≤5% THD under load

• Dielectric Loss: <0.4% @ rated voltage

Enhanced Capabilities

Partial Discharge Control

• Triple-shielded winding design

• Corona-free HV bushing with silicone grading rings

• Ultra-clean mineral oil (≤0.1% moisture)

• All metallic parts rounded (R5 minimum radius)

Thermal Management

• Winding ΔT: ≤65K at full load

• Oil ΔT: ≤55K under maximum load

• Dual cooling circuits (natural convection + forced oil)

• Integrated oil purifier with 5μm filtration

Insulation System

Structural Design

• Monocoque tank construction (10mm steel)

• Vibration-damped core mounting (3Hz cutoff)

• Modular HV terminal (upgradeable to 300kV)

• Particle-free assembly environment (Class 1000)

Standards Compliance

• IEC 60270 (Partial Discharge Measurements)

• IEEE C57.129 (PD Test Procedures)

• EN 60076-14 (Design for Low PD)

• ASTM D1816 (Dielectric Breakdown)

Specialized Applications

• Partial discharge calibration systems

• HV cable qualification testing

• Power transformer PD measurement

• Ultra-high voltage research

• Medical accelerator power supplies

With its exceptional ≤5pC partial discharge performance and 0.25A output current, the HCTT-240kV transformer sets new standards for precision in high-voltage test applications. The ultra-clean design ensures reliable measurements even in sensitive partial discharge detection systems.