100kV ~ 400kV Range
LQTT Series 150kV/20kVA High-Voltage Test Transformer
Advanced Solution for Demanding Dielectric Testing Applications
Key Advantages
High-Efficiency Design: 20kVA output at 150kV (33% capacity boost vs 15kVA models)
Enhanced PD Performance: <5pC at 100% Uₕ (IEC 60270 compliant)
Optimized Duty Cycle: Engineered for intermittent high-load testing
Precision Waveform: <5% distortion (IEC 60076-8 compliant)
Technical Specifications
| Parameter | Value | Correction |
|---|---|---|
| Rated Capacity | 20kVA | ▲33% vs 15kVA model |
| HV Output | 150kV @ 0.133A | Calculated from 20kVA/150kV |
| Partial Discharge | <5pC @ 100% Uₕ | Premium PD specification |
| Input Voltage | 0.4kV | Customizable available |
| Waveform Distortion | <5% | Precision output |
| Impedance Voltage | <10% | Optimized regulation |
| Overcurrent Capacity | 120% (0.16A) for 180s | Fixed "120%n" → 120% Iₙ |
| Overvoltage Capacity | 110% for 60s | Corrected to voltage (not current) |
| Dielectric Strength | 3kV/min (LV-ground) | Safety compliance |
Operational Profile
1. **DUTY CYCLE** (Per IEC 60076-11)
- 30 minutes ON / 60 minutes OFF
- Maximum 8 cycles per 24h
- Winding ΔT <65K, Oil ΔT <55K
2. **OVERLOAD PROTECTION**
- Short-term: 120% current (180s)
- Instantaneous: 110% voltage (60s)
Mechanical & Compliance
| Feature | Specification | Standard |
|---|---|---|
| Cooling System | ONAN (Oil Natural Air Natural) | IEC 60076-14 |
| Core Design | Cylindrical | Optimized magnetic flux |
| Frequency | 50Hz | 60Hz optional |
| No-Load Loss | ≤10% | Energy efficient |
| Insulation Class | H (180°C) | IEC 60085 |
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