HET 200kVA/33.2kV Exciter Transformer - High Voltage Testing Solution

Technical Specifications

Key Features

Precision High-Voltage Output

• Dual voltage operation (16.6kV/33.2kV)

• Ultra-low partial discharge performance

• Wide frequency range (30-300Hz)

• Isovolumetric capacitance core design

Advanced Protection System

• Zinc oxide arresters on all HV outputs

• Piezoresistor protection circuits

• 35kV corona-free bushings

• Ground-connected terminals

Robust Construction

• Steel housing with movable wheel base

• Shell-type oil tank with conservator

• Fiberglass bushings with corona rings

• Porcelain bushings for LV connections

Design Innovations

1. Balanced top/bottom winding areas for even voltage distribution

2. Electrostatic shielding between windings

3. Compound insulation tube winding skeleton

4. Optimized Bm value silicon steel core

Performance Parameters

• Cooling: ONAN with 25# transformer oil

• Temperature Limits: 65°C (windings), 55°C (oil)

• Sound Level: ≤60dB

• Impedance: ≤5%

• Continuous Operation: 60 minutes at rated capacity

Safety & Reliability

• H.V. terminal withstand: 1.1× rated voltage for 1min

• LV winding to earth: 3kV/1min

• Iron coil shielding technology

• Transport-optimized component layout

Typical Applications

• Extra-high voltage cable testing

• Power transformer factory acceptance tests

• GIS and switchgear validation

• High-voltage component R&D

Engineered for precision, the HET 200kVA/33.2kV exciter transformer sets new standards in high-voltage testing with its exceptional partial discharge performance and dual-voltage flexibility, making it ideal for critical power equipment validation.