Dry type transformer

Dry type transformer the strengthen glass fiber thin insulation resin dry type transformer---SC( B)9, SC( B)10, can be used as the renewed oil immersed type, be applicable to the power plant, high buildings, commerce center, theater, hospital, laboratory, museum, petroleum drilling platform, ships, sea ports, bus station, airports, , subway, tunnel, underground work and other important places.

Technique specification:

    1. voltage step:6-35KV

    2. capacity:30 3150 KVA

3. voltage variation: off-circuit electric regulate or on-load tap-changing

    4. tapping stage:± 5%, ± 2 ×2.5%( or under customer requirements)

    5. frequency: 50 Hz or 60 Hz

    6. phase: 3 phase

    7. connecting symbol : YynO;Dynll( or under customer requirements)

    8. short-circuit impedance :Standard impedance ( see performance parameters table)

    9. service condition: humidity 100%, environment temperature is not higher than 40

    10. highest temperature rise:100K

    11. cooling method: self cooling(AN)

    12. protection grade:IP00, IP20( indoor), IP23( outdoor)

    13. insulation grade : F class

    14. insulation level:

      1)10 KV class product: power frequency withstand voltage 35 KV, impulse withstand voltage 75 KV

      2)20 KV class product: power frequency withstand voltage 50 KV, impulse withstand voltage 125 KV

      3)35 KV class product: power frequency withstand voltage 70 KV, impulse withstand voltage 170 KV