150kVA ~ 350kVA Range
LQDZ 350kVA |400V Input | 0-420V Adjustable Output |Manual Contact Voltage Regulator| Industrial Voltage Stabilizer
Core Specifications
Parameter | Value |
---|---|
Rated Capacity | 350kVA |
Input Voltage | 0.4kV |
Output Voltage Range | 0~0.42kV |
Frequency | 50Hz |
Input Current | 875A |
Output Current | 833.3A |
Waveform Aberration | ≤3% |
Starting Voltage | ≤1.5% |
Advanced Operational Features
Electrical Drive Adjustment - DC servo motor enables precise voltage tuning with position feedback.
Short-Circuit Resilience - Withstands continuous discharge for 5 cycles without winding damage.
Symmetrical Compensation Circuit - Ensures linear output voltage stability under load fluctuations.
ONAN Cooling - Oil-Natural Air-Natural cooling for 1-hour continuous operation cycles.

Control & Safety Systems
Integrated Monitoring
Magnetism oil surface indicator
Position indicator with terminal contacts
Protection contacts for overload safety
Interlock Mechanism
Synchronized control between voltage regulator, control panel, and secondary switches prevents operational conflicts.
"Reversed polarity voltage regulation enables ±0.1% output stability even at 833A loads."
Industrial Applications
Critical Use Cases
Manufacturing Plants - Stabilize voltage for CNC machinery and assembly lines
Data Centers - Protect sensitive servers from voltage sags
Renewable Energy Stations - Regulate inconsistent solar/wind inputs
Laboratory Testing - Precision voltage supply for R&D equipment
Technical Advantages Over Competing Models
Feature | LQDZ-350kVA | Standard Regulators |
---|---|---|
Voltage Linearity | ±0.2% (Symmetrical Compensation) | ±1.5% |
Short-Circuit Tolerance | 5 discharge cycles | 1-2 cycles |
Adjustment Mechanism | Servo Motor with Position Feedback | Manual Knobs |