Electrical Specifications

Precision Characteristics

Measurement Accuracy

• Ratio Error: ≤±1%

• Dielectric Loss: ≤0.2% @20°C

• Phase Angle Error: ≤0.02°

Thermal Performance

• Cooling: ONAN (Oil Natural Air Natural)

• Duty Cycle: 1 hour ON / 1 hour OFF

• Temp Coefficient: <30 ppm/°C

Mechanical Design

• Insulation System:

• Epoxy-oilpaper composite tube

• 3-layer capacitive grading

• Wall thickness: 28mm nominal

• Dimensions: Ø350×1900mm

• Weight: ≈320 kg (operational)

• Mobility:

• 4× industrial casters (250kg capacity each)

• Quick-release base mechanism

Installation & Operation

1. Site Requirements:

• 3.2m minimum clearance to ground

• Level surface within ±1.5°

2. Measurement Setup:

• Use supplied 25kV-rated measurement cable

• Ground shield at measurement end only

3. Thermal Management:

• Pre-condition at 30kV for 10 minutes

• Monitor oil temperature (max 65°C)

Performance Limits