Our 10kV-35kV oil-immersed transformers are high-performance power distribution equipment designed for medium-voltage grids. As core units in power transmission & distribution, they step down 10kV/35kV high voltage to 0.4kV low voltage for industrial, commercial, and residential power supply, widely used in urban grids, industrial plants, renewable energy projects, and rural electrification.
Complete Specifications
| Voltage Grade | 10kV / 35kV (HV); |
| Capacity Range | 30kVA–6,300kVA (10kV); 800kVA–20,000kVA (35kV) |
| Vector Group | Dyn11 (standard), Yyn0 / YZn11 (optional) |
| Frequency | 50Hz / 60Hz |
| Cooling Method | ONAN (oil-natural air-natural, self-cooling) |
| Insulation Class | A (winding); Mineral/vegetable/silicone oil (insulation & cooling) |
Advantage
· High Energy EfficiencyAdopts cold-rolled silicon steel or amorphous alloy core with ultra-low no-load loss; S13/S20/S22 series meet China’s Class 1 energy efficiency, reducing operational costs by 15%+ vs. old models。
· Strong Short-Circuit ResistanceNew insulation structure + computer-optimized electric/magnetic field design; integrated copper windings with high mechanical strength, resisting short-circuit impact and ensuring stable operation。
· Full-Sealed & Maintenance-FreeVacuum oil injection + fully sealed corrugated tank design; no oil leakage, no moisture ingress, lifetime maintenance-free, extended service life (25+ years)。
· Safe & ReliableLow partial discharge design; over-temperature/over-voltage protection; suitable for harsh environments (-25°C to +40°C, humidity ≤90%)。
· Customization AvailableTailor-made voltage ratios, capacities, and protection levels; optional intelligent monitoring system (real-time temperature, oil level, fault alarm)。
