LQDZ-100KVA/0.4KV/0~6.3KV Voltage Transformer
Precision Motor-Driven Regulation for High-Voltage Testing Applications
Advanced Voltage Transformation Technology
Engineered for critical high-voltage environments, the LQDZ-100KVA voltage transformer delivers precise 0~6.3kV output from 0.38kV input. Featuring motor-driven regulation and symmetrical compensation technology, it maintains ≤3% waveform distortion even under full 100kVA load for 60+ minutes. With ONAN cooling and ≤5pC partial discharge, this single-phase (50Hz) transformer meets rigorous industrial testing standards.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | LQDZ-100KVA/0.4KV/0~6.3KV |
| Input Voltage | 0.38kV (Rated) |
| Output Voltage | 0~6.3kV (Adjustable) |
| Rated Current | 263.2A (Input) / 158.7A (Output) |
| Waveform Distortion | ≤3% (Aberration Ratio) |
| Starting Voltage | ≤1.5% |
| Short-Circuit Impedance | ≤7.5% (Linear 50%-100% range) |
| Partial Discharge Level | <5pC |
| Short-Circuit Withstand | 2× rated current for 8 cycles |
Engineering Excellence Features
Precision Regulation System
Motor-driven voltage control with upper/lower position limits and position indicators
Electrical Drive Smooth Transition
Robust Overload Protection
Certified withstand capabilities:
• 1.2UH: 30min
• 1.4UH: 15min
• 1.6UH: 5min
Short-Circuit Proof
Advanced Monitoring
Integrated oil level indicators, drain valve, and magnetism oil surface monitor
Real-Time Diagnostics
Compact Design
Regulating and voltage-raising units integrated in single structure
Space Optimized
Short-Circuit Performance
When discharging through damping resistance during transient states:
Withstands 2× rated current for 8 cycles
Zero damage to windings or mechanical structure
No permanent deformation under fault conditions
Validated per IEC 60076-5 short-circuit testing protocols.
Industrial Applications
High-Voltage Testing Labs
Dielectric strength validation of transformers, cables, and switchgear
Power Equipment Manufacturing
Quality assurance testing with ≤5pC partial discharge
Research & Development
Precision voltage regulation for experimental setups
Energy Infrastructure
Substation equipment testing and commissioning
Operational Reliability
Continuous Operation: 60+ minutes at 100% rated capacity
Thermal Management: ONAN cooling maintains safe operating temperatures
Linear Response: Short-circuit impedance maintains linearity between 50%-100% load range
Safety Compliance: Meets IEC 60270 partial discharge standards
