Operating Conditions:
1. Altitude <1000m.
2. Relative humidity <95%.
3. Ambient temperature –40℃~+50℃.
4. Indoor pollution class ≥ Class C.
5. Seismic resistance Grade VIII.
6. No fire, explosion, strong corrosion or vibration.
Features:
1. Low‑noise design with steel structures suppressing sound transmission.
2. Low partial discharge using high‑grade epoxy resin insulation.
3. Strong lightning impulse withstand capability with ample inter‑layer and turn‑to‑turn margins.
4. Integrally cast windings, strong short‑circuit strength.
5. Moisture‑ and fire‑resistant, can operate continuously at 155℃.
Key Technical Parameters:
1.Voltage levels: HV 10/10.5kV, LV 0.4kV.
2.Tapping range: ±2×2.5%.
3.Connection symbol: Dyn11.
4.Short‑circuit impedance: 4% (30‑630kVA), 6% (800‑2500kVA).
5.Capacity range: 30~2500kVA.
6.Energy efficiency classes: SC(B)11 ~ SC(B)14.
Additional Information:
Models available: SCB11, SCB13, SCB14. (Custom‑made to drawings, Production cycle of 10‑20 days)



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