Charging Transformer
HCTT-200kV/0.2A Industrial Charging Transformer
Product Overview
Designed for industrial high-voltage testing, the HCTT-200kV/0.2A delivers stable 200kV output with exceptional 125% over-current capacity and 1-hour continuous full-load operation capability.
Technical Specifications
Electrical Parameters | |
---|---|
Rated Capacity | 40kVA (±3%) |
Input Voltage | 400V 3-phase ±10% (Exciting Winding) |
Output Voltage | 200kV DC/AC (HV Winding) |
Current Ratings | 100A (Input) / 0.2A (Output) |
Frequency | 50Hz ±0.5% (60Hz optional) |
Measurement Precision | ±0.25% via 1000:1 ratio winding |
Performance Characteristics
Core Performance
No-load Loss: <10% of rated current
Waveform Quality: ≤5% THD at full load
Dielectric Strength: 220kV (110%) for 60 seconds
Efficiency: 94% at 80% load
Robust Design Features
Parameter | Specification |
---|---|
Over-current Capacity | 125% (0.25A) for 5 minutes |
Continuous Operation | 160kV/0.16A (80%) indefinitely |
Full Load Duration | 200kV/0.2A for 60 minutes |
Insulation Resistance | >5000MΩ @ 25°C |
Thermal Performance
Winding Temperature Rise: ≤65K at full load
Oil Temperature Rise: ≤55K under maximum load
Designed for ambient temperatures up to 50°C
Integrated oil circulation pump (2.5m³/h flow rate)
Insulation System
Component | Test Voltage |
---|---|
LV Winding-Ground | 3kV/1min |
HV Winding-Ground | 3kV/1min |
Inter-winding | 2.5× rated voltage |
Mechanical Design
Modular tank design with 8mm steel walls
Triple-sealed HV bushing (200kV BIL)
Anti-vibration mounting pads (5Hz resonance frequency)
Integrated lifting lugs (3-ton safety factor)
Compliance & Safety
IEC 61378 (Converter Transformers)
IEEE C57.12.90 (Test Procedures)
EN 50588 (Industrial Applications)
Automatic pressure relief valve (2-bar activation)
Industrial Applications
Cable factory acceptance testing
Gas-insulated switchgear (GIS) commissioning
High-voltage capacitor testing
Industrial coating systems
Research facility power supplies
The HCTT-200kV/0.2A's 40kVA capacity and extended over-current capability make it particularly suitable for testing capacitive loads up to 2000pF. The precision measurement winding allows direct connection to modern digital relay test sets and SCADA systems.