HET 600kVA Variable Frequency Exciter Transformer Technical Specifications

1. Electrical Parameters

1.1 High Voltage Winding Specifications

1.2 Low Voltage Winding

• Voltage Options: 2×450V / 2×500V / 2×550V

• Current Rating: 2×600A

2. Thermal Management System

• Cooling Method: ONAN (Oil Natural Air Natural)

• Insulation Oil: Grade A, 25# transformer oil

• Continuous Operation: 60 minutes at rated capacity

• Temperature Limits:

• Winding: ≤65K rise

• Oil surface: ≤55K rise

• Acoustic Level: ≤60dB

3. Core Structural Design

3.1 Magnetic Core

• Shell-type oil-immersed construction

• Core Material: D0130-30 high-grade silicon steel

• Low Bm value for reduced hysteresis losses

3.2 Winding Configuration

• Dual-coil design with copper conductors

• Electrostatic shielding between LV and HV windings

• Integrated measuring coil for HV voltage monitoring

• Safety distance prevents partial discharge/corona

4. Ancillary Systems

• Oil Management:

• Expansion tank with moisture absorber

• Oil temperature thermograph

• Visual oil level indicator

• Transport-Optimized Design:

• Bushings and valves positioned for safe shipping

• Compact conservator layout

5. Performance Guarantees

• Impedance level: ≤5%

• No measurable partial discharge at rated voltage

• Corona-free operation within specified ranges