10kv 30~2500kVA Resin Insulated Protective Casing Dry Type Transformer

1. Epoxy resin winding
2. Integral casting
3. Fire-proof
4. Fine adaptability
5. Exemption from maintenance
6. Low noise

Specifications: 
1. Voltage level: 6~35kV
2. Capacity: 30~20000kV
3. Regulation mode and tapping range: ± 2×2.5% (or ± 5%) none excitation regulation, ± 4
X2.5% on-load regulation
4. Nominal frequency: 50Hz
5. Phase: Three-phase
6. Label of coupling group: Yyno; Dyn11; YNd11 (or according to the customer’s requirements)
7. Short-circuit impedance: Standard impedance (can also be done according to requirement)
8. Working environment: Altitude less than 1000 meters; Environment temperature lower than 40 C. (if the working surrounding exceeds these limits, special design and manufacturing process should be involved according to related standards)
9. Heat resisting level: The upper limit of temperature is 155C, and the limit of temperature rise is 100k
10. Cooling mode: Natural air cooling (AN), forced air cooling (AF)
11. Insulation level: 
A. 6kV-type transformer: Work -frequency withstand voltage is 25kV; Impulse withstand voltage is 60kV
B. 10kV-type transformer: Work -frequency withstand voltage is 35kV; Impulse withstand voltage is 75kV
C. 20kV-type transformer: Work -frequency withstand voltage is 50kV; Impulse withstand voltage is 125kV
D. 35kV-type transformer: Work -frequency withstand voltage is 70kV; Impulse withstand voltage is 170kV