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66kV Three-Phase On-Load Tap-Changing Transformer

SZ-25000/63

Product Overview

High-Performance power transformer designed and manufactured to international standards, suitable for power transmission and distribution systems worldwide.

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Technical Specifications

ModelSZ-25000/63
Rated Capacity25000/25000 kVA
Rated Voltage Ratio(63±8x1.25%)/10.5 kV
Short-Circuit Impedance9%(±3%)
Rated Frequency50 Hz
Connection SymbolYnd11
Insulation LevelLI325AC140-LI325AC140/ LI75AC35 kV
Cooling MethodONAN
No-Load Loss22.7 kW
Load Loss100 kW
Temperature Rise LimitTop Oil: 54.5
Winding Hot-Spot: 77.2 K
Noise (Sound Pressure Level)60 dB(A)