Product Overview

The HET series 10kVA exciter transformer is a single-phase test transformer designed for high-voltage applications up to 2kV. With its movable steel housing and advanced electrostatic shielding, this unit meets IEC 60076 standards for dielectric testing equipment.

Key Specifications

Advanced Safety Systems

Electrostatic Shielding

Features a dedicated electrostatic shield layer between HV and LV windings to:

• Prevent capacitive coupling between windings

• Improve initial voltage distribution

• Reduce transient overvoltages

Overvoltage Protection

Integrated protection systems include:

• Zinc oxide arresters on all HV outputs

• Ground-connected input/output terminals

• 5kV corona-free HV bushings

Structural Design

Enclosure Features

• Steel housing with wheel-mounted mobility

• Shell-type oil tank with conservator

• Fiberglass bushings for all terminals

• Corona rings on HV bushings

Winding Configuration

Cylinder-type windings with:

• Balanced top/bottom area distribution

• Compound insulation tube construction

• Inter-turn insulation layers

• Electrostatic compensation shields

Dielectric Performance

Engineered to prevent insulation failure through:

• 5kV corona-free design (IEC 60270 compliant)

• Isovolumetric capacitance core in HV bushings

• Flashover protection between main/minor insulation

• Oil-immersed capacitance core stabilization

Operational Considerations

Installation Requirements

• Level surface with 500mm clearance

• Ambient temperature range: -25°C to +40°C

• Relative humidity <85% (non-condensing)

Maintenance Protocol

• Annual oil dielectric strength test (≥30kV/2.5mm)

• Bushing insulation resistance measurement

• Visual inspection of corona rings

• 5-year winding resistance test

Typical Applications

• Circuit breaker contact resistance testing

• Cable fault location systems

• Rotating machine excitation

• Partial discharge measurement setups