Electrical Specifications

Precision Performance

Measurement Accuracy

• Dielectric Loss: ≤0.2% @20°C

• Voltage Ratio Error: ≤±1%

• Phase Angle Stability: <0.01°/h

Thermal Management

• Duty Cycle: 1 hour ON / 1 hour OFF

• Temp Coefficient: <25 ppm/°C

• Cooling: Natural convection (ONAN)

Mechanical Construction

• Insulation System:

• Epoxy-oilpaper composite tube

• 4-layer capacitive grading

• Wall thickness: 30mm nominal

• Dimensions: Ø300/400×1850mm

• Weight: 300 kg (including base)

• Mobility:

• 4× heavy-duty casters (200kg capacity each)

• Quick-disconnect base mechanism

Installation Protocol

1. Site Preparation:

• 3.5m minimum clearance to grounded objects

• Level surface within ±2°

2. Measurement Setup:

• Use supplied 30kV-rated double-shielded cable

• Ground shield at source end only

3. Thermal Conditioning:

• Pre-heat to ambient +5°C before testing

• Monitor oil temperature (max 60°C)

Operational Limits