HET 100kVA Dual-Tap Exciter Transformer

Variable Frequency High Voltage Solution

This 100kVA single-phase exciter transformer features dual high-voltage outputs with extended frequency operation, designed for precision testing applications up to 20kV.

Electrical Parameters

Key Features

• Adjustable LV input voltage (0.35-0.45kV)

• Dual HV output (10kV/20kV)

• Wide frequency operation (50-120Hz)

• 20kV corona-free bushings

• Electrostatic shielding between windings

Technical Specifications

Cooling System

• ONAN (Oil Natural Air Natural)

• 25# transformer oil

• Steel housing with wheel-mounted design

Structural Components

• Shell-type oil tank with conservator

• Porcelain bushings for LV connections

• Fiber glass bushings for HV terminals

• Corona rings on all HV bushings

Protection System

1. Electrical Protection:

• Piezoresistors on all HV outputs

• Zinc oxide arresters for grounding

• Isovolumetric capacitance core design

2. Insulation System:

• Cylinder winding with turn-to-turn insulation

• Electrostatic shield between windings

• Compound insulation tube skeleton

• Balanced top/bottom capacitance distribution

Performance Data

Typical Applications

• Variable frequency resonant testing

• Power transformer excitation

• High-voltage cable testing

• Circuit breaker testing

• Electrical research laboratories

Safety Features

• Flashover protection from external surges

• Protected main and minor insulation systems

• 20kV corona-free guaranteed operation

• Thermally optimized design

The HET 100kVA dual-tap exciter transformer combines flexible voltage outputs with wide frequency operation, delivering reliable performance for demanding high-voltage testing applications.