Technical Specifications

• Model: LQDZ-750kVA/0.415kV/0~6.3kV

• Phase: Single Phase

• Frequency: 50Hz

• Rated Capacity: 750kVA

• Input Voltage: 0.415kV

• Input Current: 1807.9A

• Output Voltage: 0-6.3kV Continuously Adjustable

• Output Current: 0-119A

• Cooling Method: ONAN (Oil Natural Air Natural)

Performance Highlights

Precision Voltage Control

Motor-driven regulation system enables smooth voltage adjustment from 0-6.3kV with:

• Waveform distortion ≤3% (THD)

• Starting voltage ≤1.5% of rated value

• Linear impedance characteristics (50-100% range)

Robust Protection System

• Short-Circuit Proof: Withstands 2× rated current for 8 cycles without damage

• Thermal Management: Max 55K oil temperature rise / 65K winding rise

• Position Limits: Upper/lower mechanical safety stops

Engineering Design

Structural Features

• Integrated voltage regulation and boosting units

• Industrial-grade components rated for 30min continuous operation at 100% load

• Short-circuit impedance ≤7.5%

Operator Safety Systems

• Oil level indicator with visual alerts

• Emergency oil drain valve

• Damping resistance for transient discharge protection

Industrial Applications

Standards & Certifications

Manufactured in compliance with international electrical safety standards including:

• IEC 60076 Power Transformer Standards

• IEEE C57.12.00 General Requirements

• ASTM D3487 Mineral Insulating Oil Specs

Safety Note: Requires installation by certified electricians using CAT IV PPE for operations above 1kV.