11kV KS9 Oil Immersed Mining Transformer

11kV KS9 Oil Immersed Mining Transformer1. Dtandards: GB1094-1996; GB12173-1990; GB/T10228-2008; EQV IEC60076 2. Capacity Range: 50-630kVA 3. Voltage Grade: 6, 11kV 4. Voltage Regukation Mode: Off circuit tap changing or on load tap changing 5. tapping Range: ±5%, ±2×2.5% or others 6. Frequency: 50Hz; 60Hz 7. Phase: Three phase 8. Connection Sign: Yy0-d11 or others 9. Short Circuit Impedance: Standard impedance Features: AS one kind of distribution transformer for mining using, it has many advantages, such as compacted body, reasonable structure, low in spoilage, good in heat-dispersion and easy to go into a well This series product adopts high-permeance cold-rolled grain-oriented silicon-steel plate of high-quality The iron core applies echelon form iterative accumulation; The core pole which is multilevel circular cross-section can ensure of low noise and low spoilage The structure of gasoline tank is very firm. Both side of tank are welded with cable junction boxes of high and low voltage which are used for wiring