Voltage Tap Specifications

Technical Parameters

Electrical Performance

• Frequency: 60Hz ±0.5%

• Capacity: 2250kVA

• THD: ≤1% (IEC 61000-4-7)

Dielectric Properties

• Q Factor: ≥40

• PD Level: <2pC @100% U_H

• Insulation: 10kV/min (HV to ground)

Enhanced Reliability

Overload Capability

• Current: 120% (36A/27A) for 5min

• Voltage: 110% withstand for 1min

Thermal Management

• Winding ΔT: ≤65K (IEC 60076-2)

• Oil ΔT: ≤55K

• Duty Cycle: 1h ON/1h OFF (4×/day)

Precision Engineering

Core Components

• Adjustment System: 20:1 air gap control

• Material: 1Ni18Cr9Ti non-magnetic stainless

• Noise: ≤75dB (Double lead screw)

Enclosure

• Pressure Test: 20kPa (GB/T 7354)

• Seals: MIL-R-25988 compliant

• Coating: RAL 5015 sky blue

Certifications

• IEC 60060-1 (High-voltage testing)

• IEC 60270 (Partial discharge)

• IEEE C57.12.90 (Temperature rise)