Charging Transformer
HCTT-150kV/0.4A High Power Charging Transformer
Product Overview
Designed for high-current HV testing applications, the HCTT-150kV/0.4A delivers 60kVA capacity with exceptional overload capacity (150% current rating) and precision voltage regulation for demanding industrial test environments.
Core Specifications
Rated Parameters | |
---|---|
Rated Capacity | 60kVA |
Input Voltage | 400V ±10% (Exciting Winding) |
Output Voltage | 150kV (HV Winding) |
Current Ratings | 150A (Input) / 0.4A (Output) |
Frequency | 50Hz/60Hz (±2% stability) |
Voltage Ratio | 1000:1 (Measuring Winding) |
Performance Highlights
Electrical Characteristics
No-load Current: ≤10% of rated current
Waveform Distortion: ≤5% THD under full load
Dielectric Loss: <0.4% @ rated voltage
Robust Overload Capacity
Parameter | Capability |
---|---|
Over-current | 150% rated current (0.6A) for 5 minutes |
Over-voltage | 165kV (110% rating) for 1 minute |
Continuous Operation | 120kV/0.32A (80% rating) indefinitely |
Full Load Duration | 150kV/0.4A for 60 minutes |
Thermal Management
Winding Temp Rise: <65K at full load
Oil Surface Temp Rise: ≤55K at full load
Forced oil cooling optional for high-duty cycles
Insulation System
Component | Withstand Voltage |
---|---|
LV Winding-Ground | 3kV/1min |
HV Winding-Ground | 3kV/1min |
Inter-winding | 1.5× rated voltage |
Mechanical Design
Industrial-grade steel tank with corrosion protection
Modular bushing design for easy maintenance
Integrated wheels with locking mechanism (1000kg capacity)
Dual-level oil sight glasses with temperature markers
Safety & Compliance
IEC 60076-1 (Power Transformers)
IEEE C57.12.90 (Test Code)
EN 50588 (Industrial Applications)
Automatic Buchholz relay for fault protection
Typical Applications
HV cable factory acceptance testing
GIS (Gas Insulated Switchgear) commissioning
Power transformer impulse testing
High-current partial discharge measurements
Research labs for insulation materials
With its 60kVA capacity and 0.4A output current, the HCTT-150kV transformer enables stable testing of high-capacitance loads. The 150% over-current capability makes it particularly suitable for cascade connection systems and long-duration withstand voltage tests.