HET 125kVA Dual-Tap Exciter Transformer

Ultra-Low Partial Discharge Testing Solution

This precision-engineered 125kVA exciter transformer delivers industry-leading <2pC partial discharge performance with robust overload capabilities for demanding test applications.

Electrical Specifications

Key Features

• Industry-leading <2pC partial discharge

• 160% overload capacity for 1 hour

• Dual voltage output configuration

• 5kV corona-free operation

• Thermally optimized duty cycle

Technical Specifications

Thermal Performance

• Continuous duty: 1 hour ON / 1 hour OFF

• Max winding ΔT: 65K

• Max oil ΔT: 55K

• ONAN cooling system

Structural Design

• Heavy-duty steel enclosure

• Wheel-mounted for mobility

• Shell-type oil tank with conservator

• Fiber glass HV bushings with corona rings

Advanced Protection System

1. Electrical Protection

• Piezoresistors on all HV outputs

• Zinc oxide arresters for grounding

• Isovolumetric capacitance core

2. Insulation System

• Cylinder winding design

• Electrostatic shielding

• Compound insulation tube

• Balanced voltage distribution

Performance Characteristics

Industrial Applications

• Precision partial discharge measurement

• High-voltage cable testing

• Transformer diagnostic testing

• Insulation resistance testing

• Electrical research laboratories

Quality Assurance

• Precision voltage distribution design

• Electrostatic shield compensation

• Iron core shielding technology

• Thermally validated performance

The HET 125kVA exciter transformer sets new standards for partial discharge performance with its <2pC capability, making it ideal for sensitive high-voltage testing applications requiring exceptional measurement accuracy.