100kV ~ 400kV Range
LQTT Series 200kV/20kVA High Voltage Test Transformer
Engineered for demanding high-voltage testing environments, this cylinder-type transformer combines precision partial discharge performance with exceptional overload resilience. Certified for critical applications where voltage stability and system protection are paramount.
Core Technical Specifications
Parameter | Specification | |
---|---|---|
Rated Capacity | 20 kVA | |
Input Voltage | 0.4 kV AC | |
Output Voltage | 200 kV AC | |
Output Current | 0.1 A | |
Frequency | 50 Hz | |
Cooling Method | ONAN (Oil-Natural Air-Natural) | |
Partial Discharge (PD) | <2 pC at 100% UH | (Full test system) |
Waveform Distortion | ≤ 5% | |
Impedance Voltage | ≤ 10% | |
No-Load Current | ≤ 10% | |
Insulation Strength | 3 kV/min (LV input to ground) |
Robust Performance Capabilities
Key Differentiators
1. Advanced Protection Engineering
150% Current Overload: Sustain 0.15A (30kVA) for 5 minutes without insulation damage
110% Voltage Surge: Withstand 220kV for 60 seconds for transient protection
Ground Insulation: 3kV/min withstand on LV inputs (exceeds IEC 60076 standards)
2. Precision PD Performance
<2pC Partial Discharge at full 200kV output - ideal for:
Bushing/cable acceptance testing (IEC 60270)
Calibration of PD measurement systems
Research-grade dielectric studies
3. Optimized Thermal Design
ONAN Cooling System: Zero-maintenance operation
Strict Temperature Control:
Winding rise ≤65K at full load
Oil surface rise ≤55K at continuous 80% load
Technical Specifications Table
Feature | Specification | Test Standard |
---|---|---|
Rated Voltage | 200 kV AC | IEC 60060-1 |
PD Level | <2 pC @ 200kV | IEC 60270 |
Over-Current | 0.15A (150%) for 300s | IEEE C57.12.91 |
Over-Voltage | 220kV (110%) for 60s | IEC 60076-11 |
Insulation Test | 3kV/min (LV-Ground) | IEC 61144 |
Dimensions | Ø1300 × H1300 mm | - |
Weight | <1500 kg | - |
Critical Applications
Dielectric Withstand Testing: Transformers, cables, GIS switchgear
Partial Discharge Calibration: Reference source for PD detectors
High-Voltage Research: Material breakdown studies, insulator validation
Quality Assurance: Factory acceptance testing (FAT) for power equipment
Compliance & Standards
Certified for use in systems requiring:
IEC 60076 (Power transformers)
IEEE 4 (HV testing techniques)
IEC 60270 (Partial discharge measurements)
IEC 60060-1 (HV test procedures)
Comparison: LQTT Series Transformers
Model | PD Level | Overload Capability | Core Application |
---|---|---|---|
200kV/20kVA | <2 pC | 150% current/300s | PD-sensitive validation |
200kV/10kVA | <1 pC | N/A | Precision calibration |
150kV/350kVA | N/A | N/A | High-current testing |
Call to Action
For high-stakes testing scenarios:
⚡ [Download 200kV/20kVA Test Protocols]
🔍 [Request PD Performance Validation Report]
📞 [Consult HV Engineers for Application Fit]