>350kVA Range
LQDZ 400kVA |3kV Input | 0-3.3kV Adjustable Output |Manual Contact Voltage Regulator| Industrial Voltage Stabilizer
Core Technical Specifications
Parameter | Specification | Industrial Advantage |
---|---|---|
Rated Capacity | 400kVA | Heavy industrial power handling |
Input Voltage | 3kV | Medium-voltage compatibility |
Output Voltage Range | 0~3.3kV | Wide adjustable range |
Input Current | 133.3A | Efficient power conversion |
Output Current | 121.2A | Precision current delivery |
Frequency | 50Hz | European/Asian grid compatibility |
Waveform Distortion | ≤3% | Clean power for sensitive equipment |
Starting Voltage | ≤1.5% | Smooth startup sequence |
Advanced Control & Regulation
Precision Servo Drive
DC motor adjustment with programmable speed control for exact voltage positioning
Symmetrical Compensation
Reversed polarity circuit ensures linear output (±0.2%) under load fluctuations
Integrated Monitoring System
Magnetic oil level indicator
Position indicator with terminal contacts
Protection contacts for overload safety
Robust Protection Features
Short-Circuit Resilience
Withstands 5 continuous discharge cycles without winding damage
Safety Interlock System
Synchronized operation between regulator, control panel, and secondary switches
Thermal Management
ONAN (Oil Natural Air Natural) cooling
Certified 1-hour continuous operation at full load
Automatic thermal protection
"The symmetrical compensation circuit maintains voltage stability within 0.25% during 0-3.3kV transitions - critical for high-voltage testing applications."
Performance Specifications
Performance Metric | LQDZ-400kVA Capability | Industry Standard |
---|---|---|
Voltage Adjustment Range | 0-3.3kV (100% range) | 70-80% typical |
Regulation Linearity | ±0.25% (symmetrical compensation) | ±1.0-1.5% |
Short-Circuit Tolerance | 5 full discharge cycles | 2-3 cycles |
Cooling Efficiency | ONAN with 1-hour continuous rating | 30-minute typical |
Industrial Applications
Power Generation
Substation voltage regulation
Transformer testing
Grid simulation
Industrial Manufacturing
High-voltage equipment testing
Process control systems
Quality assurance testing
Research & Development
High-voltage laboratories
Material dielectric testing
Prototype validation
Compliance & Standards
Designed to IEC 60076 power transformer standards
Meets IEEE C57.15 voltage regulator requirements
CE certified for European markets
RoHS compliant materials
Installation & Maintenance
Space Requirements
Minimum 1500mm clearance for ventilation and maintenance access
Maintenance Protocol
Annual oil testing
Biennial contact inspection
5-year comprehensive overhaul