Technical Specifications

• **Rated Capacity:** 80kVA  
• **Input:** 380V AC ±10% | 210.5A | 50Hz  
• **Output:** 0-650V AC | 123A  
• **Waveform Distortion:** ≤3% THD  
• **Starting Voltage Deviation:** ≤1.5%  
• **Impedance Voltage:** ≤7.5% (linear 50-100% range)  
• **Cooling:** ONAN (Oil Natural Air Natural)  
• **Duty Cycle:** 60 minutes continuous  
• **Control System:** DC Servo-Motor Drive

Engineering Excellence

1. Robust Electrical Performance

• Short-Circuit Withstand: 8 cycles at rated current (160ms @ 50Hz)

• Overload Capability:

• 1.2×In → 30 min
  1.4×In → 15 min
  1.6×In → 5 min

• Symmetrical Compensation Circuit: Ensures <±1% voltage linearity

• Reversed Polarity Regulation: Eliminates waveform distortion

2. Precision Control System

• Servo-Motor Adjustment: 0.1V resolution tuning

• Position Feedback: Optical encoder with limit contacts

• Interlock System: Triple safety integration with control panel and secondary switches

3. Critical Components

• Magnetic oil level indicator (ASTM D3612 compliant)

• Class H insulation (180°C thermal class)

• Grain-oriented silicon steel core

• Silver-plated terminals (150A rating)

Performance Validation

Mechanical Configuration

• **Core Construction:** Step-lap mitered joints  
• **Windings:** Helical copper with reinforced axial bracing  
• **Cooling System:** Corrugated tank with radiators  
• **Enclosure:** IP23 (indoor/outdoor installation)  
• **Noise Level:** ≤55dB @ 1m (IEC 60076-10)

Industrial Applications

• Power Grid Testing: Transformer and switchgear commissioning

• Heavy Industry: Induction heating system power conditioning

• Research Facilities: High-voltage material testing

• Manufacturing: Industrial oven temperature control