Product Parameters
Rated Capacity: 100MVA～1000MVA
Voltage Level: 500kV, 750kV, 1000kV
Phase: Three-Phase
Frequency: 50Hz / 60Hz
Voltage Regulation: (OLTC)On-Load Tap Changer
Cooling: ONAN / ONAF / OFAF / ODWF
Connection Group: YNd11, YNyn0
Insulation Level:
High pressure: LI2400kV / AC950kV(750kV Level)
Neutral point: LI1550kV / AC630kV
Impedance Voltage: 12%～18%(OEM)
Insulation Medium: Mineral Oil / Natural Ester Oil
Product Features
Ultra-low loss, high efficiency (≥99.6%), greatly reduces long-distance transmission energy consumption
Strong short-circuit resistance, low partial discharge (≤5pC), long insulation life
Adopts high-permeability grain-oriented silicon steel, vacuum oil filling, reinforced tank structure
Adapts to harsh UHV grid conditions, excellent lightning and switching overvoltage resistance
Intelligent design: online monitoring of oil temp., winding temp., PD, DGA
Application Scope
National UHV backbone grids, long-distance transmission corridors
Step-up for large power plants (hydro/thermal/nuclear)
Cross-provincial & cross-regional grid interconnection, UHV substation main transformers
Large energy base power transmission projects
Standards
IEC 60076 (Power Transformers)
GB 1094, GB/T 6451
IEEE C57.12
Q/GDW 11357
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