S11/S9 10kv grade oil immersed distribution transformers are widely used for power supply & distribution in industrial and civil occasions, to step down grid voltage (11, 10.5, 10, 6.3, 6KV) to line voltage 400V, which can serve both indoors and outdoors at an ambient temperature range -25℃ to 40℃. With reasonable structure design, the transformers are qualified to withstand short-circuit and overload, and are free of maintenance and easy to repair. 

The transformers have S9, advanced S11 and the newest S13 series, the S11 is more recommended for the balance in less loss and reasonable price.

Product standard:  IEC60076 & GB1094 and GB/T6451

Main specification:

Rated Capacity (KVA): 10~2500 KVA 

Vector Group: Yyn0 or Dyn11

Impedance Voltage (%): 4%, 4.5% 

Rated voltage: H. V: 11, 10.5, 10, 6.3, 6KV (or customized) 

L. V.: 0.4, 0.69KV (or customized) 

Tapping range: +/- 5% or +/- 2 * 2.5%  (or customized) 

Frequency: 50/60Hz 

Number of phases: 3 

Cooling method: ONAN 

Temperature rise limits: Winding ≤ 65K, Top oil ≤ 60K 

Standards: IEC60076 Power transformer, GB1094 Power transformer, GB/T6451 Technical data & requirement of three-phase oil immersed power transformer 

Ambient conditions: 

Altitude: ≤1, 000m 

Highest ambient temperature: +40℃ 

Highest annual average temperature: +20℃ 

Highest monthly average temperature: +30℃ 

Lowest temperature: -25℃

Indoor and outdoor

S11 specification:

Zhejiang Accel Technology Co., Ltd.

Year Established:2015

Business Type:Manufacturer, Trading Company

Management Certifiation:

Operational Address: No. 204-206, Bldg. 9, Kaitai Auto Center, 18 Tongqu Rd., Kecheng Area, Quzhou, Zhejiang, China (Mainland)