HET 190kVA/18.75kV Exciter Transformer - High Precision HV Testing Equipment

Technical Specifications

Core Features

Advanced Electrical Protection

• Zinc oxide arresters on all ground connections

• Piezoresistors for each HV output

• 20kV corona-free bushings

• Electrostatic shielding between windings

Robust Mechanical Design

• Steel housing with integrated wheels

• Shell-type oil tank with conservator

• Fiberglass bushings with corona rings

• Porcelain bushings for LV connections

Optimized Insulation System

• Compound insulation tube winding skeleton

• Balanced top/bottom winding areas

• Isovolumetric capacitance core design

• Turn-to-turn insulation layers

Performance Characteristics

• Cooling Method: ONAN (Oil Natural Air Natural)

• Current Ratings: 316.7A (LV), 10-30.4A (HV)

• Voltage Output: Triple-range selectable output

• Safety Standard: Designed to prevent flashover and partial discharge

Engineering Advantages

1. Precision voltage distribution through electrostatic compensation

2. Iron coil shielding for reduced electromagnetic interference

3. Optimized insulation aging characteristics

4. Movable design for test site flexibility

Typical Applications

• Power transformer factory testing

• High-voltage cable qualification

• Switchgear withstand voltage tests

• Research laboratory applications

The HET 190kVA exciter transformer combines precision engineering with robust safety features, delivering reliable performance for critical high-voltage testing applications up to 18.75kV.