Electrical Parameters

Precision Characteristics

Capacitance

• Primary: 4000 pF ±2.5%

• Temperature Coefficient: <50 ppm/°C

• Dielectric Loss: ≤0.2% (tanδ)

Measurement

• Ratio Error: ≤±1%

• Phase Error: ≤0.03°

• Frequency Range: 45-55Hz optimized

Mechanical Configuration

• Insulation: Epoxy oil-paper composite tube

• Dimensions: 300/500×1600 mm (Dia×H)

• Weight: <280 kg (including base)

• Base: Wheel-mounted with locking mechanism

• HV Terminal: Corona-free design (Ø400mm ring)

Installation & Operation

1. Positioning:

• 1.5m minimum clearance to grounded objects

• Level base within ±2°

2. Connections:

• Use shielded measuring lead (included)

• For two-stage series: match cable lengths within 0.3m

3. Pre-Test: Energize at 30% rated voltage for 5min before full testing

Maintenance & Safety

• Annual Checks:

• Oil level inspection (min 85% fill)

• Cleaning of corona ring surfaces

• Transport: Secure with base locking pins

• PD Monitoring: Recalibrate if background exceeds 1pC