10KV S20 Oil Immersed Transformer 50-5000KVA

S20 series 10kV oil immersed transformer is Grade 2 high-efficiency energy-saving distribution equipment,upgraded based on S13 model,fully compliant with IEC60076,GB20052-2020&GB/T6451 standards.Rated capacity covers 50kVA~5000kVA,widely applied in urban&rural power grid renovation,industrial parks,new energy stations,mining,commercial plaza and municipal power distribution projects as core voltage conversion unit for 10kV/0.4kV power system.

Core Technical Advantages(vs S13/S11)

Remarkable Energy Saving

Adopts ultra-thin high-permeability CRGO silicon steel core with 45°full miter cutting craft:

No-load loss down 10%~20%vs S13,over 35%vs S11

Load loss reduced by roughly 20%against S13,cutting long-term idle power consumption greatly;strictly meets national Class 2 energy efficiency requirement.

Premium Oxygen-Free Copper Winding

High-purity electrolytic copper wire with multi-layer high-temperature insulation+full vacuum drying impregnation,compact concentric coil layout,strong short-circuit withstand capacity(resist 150%short-circuit impact),stable temperature rise under full load,extend service lifespan over 25 years.

Available vector group:Dyn11/Yyn0 as customized request.

Fully Sealed Corrugated Tank,Low Maintenance

All-welded sealed corrugated radiator tank without conservator;corrugated sheet auto expands/contract with oil temperature variation,completely isolate inner oil from air&moisture,slow oil aging,realize near maintenance-free running.Filled with high-grade mineral insulating oil for ONAN natural cooling.

Ultra-Low Running Noise

Optimized core lamination&damping structure,running noise≤45dB(A),far below national JB/T10088 standard,fit residential districts,schools and noise-sensitive downtown projects.

Standard Electrical Parameters

Primary voltage:10kV(optional 10.5kV/11kV);Secondary standard:0.4kV,special low voltage customizable

Tap range:HV side±2×2.5%off-circuit tap changer for grid voltage regulation

Frequency:50Hz;Cooling mode:ONAN(Oil Natural Air Natural)

Complete capacity list:

50/100/160/200/250/315/400/500/630/800/1000/1250/1600/2000/2500/3150/4000/5000kVA

Working ambient:-25℃~+40℃,adapt plain,coastal damp and plateau areas.

Optional Extra Accessories

Oil level indicator,pressure relief valve,winding temperature sensor,protective enclosure,base mounting skid,anti-explosion device.

Application Scenarios

National grid upgrading,photovoltaic/wind power auxiliary transformation,factory dedicated substation,residential community power supply,highway&municipal engineering power distribution.