1) Standard: GB/T10228; GB6450; IEC726

2) Capacity range: 30 - 2,500KVA

3) Frequency: 50Hz

4) Phase: 3-phase

5) Tap changing method: off circuit or on load

6) Tapping range: ±4 x 2.5% (9 positions)

7) Connection symbol: Yyn0 or Dyn11

8) Impedance voltage: 4% or 6%

9) Insulation level: LI75AC35 / AC5

10) Protective enclosure: with or without

Open Ventilated Dry-type Transformer