HET 350kVA/11.7kV Exciter Transformer - Precision Dual-Range Testing

The HET 350kVA/11.7kV,5.8kV Exciter Transformer is engineered for laboratory-grade high-voltage testing, featuring dual-range outputs, industry-leading partial discharge performance (<2pC), and military-spec protection systems for critical power applications.

Technical Specifications

Innovative Design Features

Voltage & Insulation System

• Dual-Range Precision: 5.8kV and 11.7kV outputs with identical current density

• Electrostatic Shielding: Multi-layer isolation between HV/LV windings

• Cylinder Windings: Balanced top/bottom area with shield compensation

Safety & Protection

• Piezoresistor Arrays: Each HV output protected against transient surges

• Zinc Oxide Arresters: Grounded terminals meet IEEE C62.11 standards

• 12kV Corona-Free: Fiberglass bushings with triple-ring design

Structural Engineering

• Mobile Test Unit: Wheel-mounted steel enclosure with shell-type oil tank

• Advanced Bushings:

• HV: Isovolumetric capacitance core fiberglass

• LV: Porcelain bushings by IEC 60137

• Oil Management: Conservator with magnetic oil level indicator

Performance Advantages

Ultra-Low Discharge

<2pC ensures research-grade measurement accuracy

Dual-Range Efficiency

5.8kV/11.7kV switching without performance compromise

60Hz Optimization

Specialized for North American power standards

Flashover Prevention

Turn-to-turn insulation layers withstand 150% rated voltage

Industrial Applications

• Medium-voltage cable factory testing

• Power transformer routine tests

• Industrial motor insulation diagnostics

• University high-voltage labs

Certifications & Compliance

• IEEE C57.12.90 (Test Code)

• IEC 60076-3 (Insulation Levels