HET 600kVA/15kV Mobile Exciter Transformer Technical Specifications

1. Electrical Parameters

2. Structural Features

2.1 Mobile Design

• Steel housing with integrated wheels

• Shell-type oil tank construction

• HV bushings mounted on oil tank

2.2 Bushing Technology

• Isovolumetric capacitance core design

• Fiberglass-reinforced insulation

• Corona rings on all HV bushings

• Guaranteed 15kV corona-free operation

3. Protection Systems

3.1 Surge Protection

• Zinc oxide arresters on all ground connections

• Piezoresistors per HV output

• Double protection for operator and equipment

3.2 Electrostatic Shielding

• Dedicated shield layer between HV/LV windings

• Balanced top/bottom winding area

• Voltage distribution optimization

4. Insulation System

• Winding Design: Cylinder-type with compound insulation tube

• Barrier Protection:

• Inter-turn insulation layers

• Main/minor insulation protection

• Partial Discharge Control: <5pC at rated voltage

5. Oil Management System

• ONAN (Oil Natural Air Natural) cooling

• Expansion tank with oil conservator

• Capacitance core fully oil-immersed

• Porcelain bushings for LV connections

6. Safety Certifications

Complies with:

• IEC 60076 power transformer standards

• IEEE C57.12.00 safety requirements

• EN 50588-1 for mobile test equipment