HET 100kVA Three-Tap Exciter Transformer

Motorized Tap-Changing High Voltage Solution

This 100kVA exciter transformer features motorized tap switching between three voltage outputs, designed for flexible high-voltage testing applications.

Electrical Parameters

Key Features

• Motorized tap switch for remote operation

• Three preset output voltage options

• 5kV corona-free bushings

• ONAN cooling system

• 110kV grade insulation system

Technical Specifications

Cooling System

• ONAN (Oil Natural Air Natural)

• 25# transformer oil

• 110kV insulation grade

Structural Design

• Steel housing with wheel-mounted mobility

• Shell-type oil tank with conservator

• Porcelain bushings for LV connections

Protection System

1. Electrical Protection:

• Piezoresistors on all HV outputs

• Zinc oxide arresters for grounding

• Fiber glass bushings with corona rings

2. Insulation System:

• Electrostatic shield between windings

• Cylinder winding with turn-to-turn insulation

• Compound insulation tube skeleton

Performance Data

Typical Applications

• Circuit breaker testing

• Transformer excitation systems

• High-voltage equipment diagnostics

• Insulation resistance testing

• Electrical research laboratories

Safety Features

• Flashover protection from external surges

• Protected main and minor insulation systems

• Isovolumetric capacitance core design

• Thermally optimized duty cycle

The HET 100kVA exciter transformer with motorized tap switching provides flexible high-voltage outputs with robust safety features, ideal for various electrical testing applications.