HET 66kVA Triple-Tap Exciter Transformer (2.2kV-6.6kV)

Engineered for versatile testing applications, the HET 66kVA exciter transformer offers three configurable output taps (2.2kV/3.85kV/6.6kV) with <5% impedance voltage. Features ONAN cooling and comprehensive safety systems for laboratory and industrial use.

Technical Specifications

Core Design Features

Advanced Insulation System

• Electrostatic Shielding: Dedicated HV-LV winding isolation layer

• Cylinder-Type Windings: Balanced top/bottom area distribution

• Compound Insulation Tube: Reduces partial discharge (PD) and shields iron core

• Voltage Stabilization: Electrostatic compensation technology

Mechanical Construction

• ONAN Cooling: Oil Natural Air Natural system

• Steel Housing: Shell-type oil tank with conservator

• Mobile Design: Wheel-mounted with movable base

• Corona-Free Bushings: Fiberglass HV bushings (6.6kV rated)

Protection Systems

Electrical Protection

• Zinc oxide arresters on all HV outputs

• Piezoresistors per HV terminal

• Isovolumetric capacitance core for bushings

Structural Safety

• Porcelain LV bushings

• Multi-layer turn-to-turn insulation

• Flashover protection for all insulation layers

Performance Advantages

1. Three-Tap Flexibility: Single-unit solution for multiple test voltages

2. High Current Capacity: Up to 30A output at 2.2kV

3. Low Impedance: <5% voltage drop ensures accuracy

4. Field-Ready: Wheeled base for lab/field deployment

Typical Applications

• Industrial motor testing

• Medium-voltage cable evaluation

• Power electronics component testing

• Research facility voltage generation

Manufactured in compliance with IEC 60076-3 insulation standards and IEEE C57.12.00 safety requirements. Recommended maintenance interval: 2 years or 2000 operational hours.