Electrical Characteristics

Mechanical Configuration

Core Structure

• Insulation: Epoxy-impregnated oil-paper tube

• Temperature Coefficient: <30 ppm/°C

• Cooling: ONAN (Oil Natural Air Natural)

Interfaces

• HV Terminal: Corona-free scalable connector

• Measurement Lead: 15kV shielded twisted pair

• Base: Removable with 4× locking casters

Measurement Accuracy

• Voltage Ratio Error: ≤1% (true RMS)

• Phase Angle Error: ≤0.05°

• Frequency Response: 45-65Hz optimized

Calibration: Maintains accuracy for 500+ charge/discharge cycles

Installation Guidelines

1. Position on level surface with 1m clearance

2. Connect measuring lead to variable frequency source:

• Single-stage: Direct connection

• Two-stage: Equal cable lengths (≤0.5m difference)

3. Pre-heat to >5°C before 55kV testing

Safety & Transport

• Corona Ring: Detachable aluminum alloy (Ø350mm)

• Oil Maintenance: Check level quarterly (min 80% fill)

• Transport: Secure base with shipping brackets