HET 50kVA Exciter Transformer Technical Specifications

The HET series 50kVA exciter transformer delivers precision high-voltage output (5kV/10kV/20kV) for industrial testing applications, featuring advanced insulation technology and operator safety systems.

Core Specifications

Key Technical Features

Insulation System

• Partial discharge level <10pC at rated voltage

• Electrostatic shield between HV/LV windings

• Cylinder-type winding with equalized top/bottom area distribution

• Compound insulation tube skeleton reduces PD and shields iron core

Cooling & Construction

• ONAN (Oil Natural Air Natural) cooling method

• Steel housing with movable wheel base

• Shell-type oil tank with conservator

• Fiberglass bushings with corona rings (20kV corona-free)

Safety Protection Systems

Overvoltage Protection

• Zinc oxide arresters on all HV outputs

• Ground-connected input/output terminals

• Piezoresistors installed per HV output

Dielectric Protection

• Isovolumetric capacitance core for HV bushings

• Multi-layer insulation between windings

• Porcelain bushings for LV connections

Design Advantages

1. Precision Voltage Distribution: Electrostatic shielding compensates initial voltage gradients

2. Reduced Partial Discharge: <10pC rating ensures measurement accuracy

3. Operational Safety: Integrated flashover protection prevents insulation damage

4. Mobility: Wheeled design facilitates lab/field deployment

Typical Applications

• High-voltage equipment factory testing

• Power component aging studies

• Insulation material evaluation

• Research lab voltage generation

All specifications comply with IEC 60076 standards for power transformers. Recommended maintenance interval: 2 years or 1000 operational hours.