Technical Specifications

High-Voltage Control Technology

Precision Voltage Adjustment

Servo motor-driven control enables smooth voltage regulation from 0-3.15kV with ±0.25% linearity. Digital position indicators provide real-time voltage feedback.

Short-Circuit Protection

Withstands 5× output current surges (396A) for 5 cycles without winding damage or mechanical distortion. Protection contacts trigger within 3ms during faults.

Monitoring Systems

• Magnetic oil level indicator

• Terminal position contacts

• Temperature-rise alarms

Thermal Management & Operation

Thermal Protection

• Winding temperature rise: ≤65K

• Oil surface temperature rise: ≤55K

• ONAN cooling system (Oil Natural Air Natural)

Operational Limits

• 100% capacity: 60 minutes continuous

• Derated operation: Unlimited at 85% load

• Instant start capability: ≤1.5% starting voltage

High-Voltage Applications

Safety & Compliance Features

Mechanical Safeguards

• Anti-distortion winding design

• Reinforced core construction

• Vibration-dampened mounting

Electrical Protections

• Overcurrent interlocks

• Thermal overload cutoffs

• Polarity reversal prevention

Compliance Standards

• IEC 60076 (Power Transformers)

• IEC 61010 (Safety Requirements)

• IEEE C57.12.00 (General Requirements)

Technical Advantages

1. Ultra-wide range: 0-3.15kV output covers MV/HV testing requirements

2. Precision control: Servo motor enables 0.1kV incremental adjustments

3. Robust construction: Withstands 5× overloads without damage

4. Thermal stability: ONAN cooling maintains ≤65K winding temperature rise

"The LQDZ series' 3.15kV range bridges the gap between standard voltage regulators and specialized test equipment, providing exceptional versatility for industrial applications."– High Voltage Engineering Journal