The dry-type transformer is without oil, so it is no danger of burning and can be installed indoor as well as be entered into load center to meet the needs of high-density load development in modern metropolises.
This product possess such advantages as low no-load loss, no oil, flame retardation and self-extinguishing, moisture resistance, crack resistance, maintenance-free etc. can be used to replace all common dry-type transformers which now are used in many places. They can used in high buildings, commerce centers, subways, airports, train stations, enterprises and power plants, they are especially suitable for installing and using in such places where strict fireproof requirements, including anti-combustible and anti-explosive, must be meet.
Power-Cast transformers are available with specification as follows :
1. Rated capacity : 30~16000kVA
2. Rated HV : 6kV to 35 kV
3. Frequency : 50Hz or 60Hz
4. Cooling methods : ONAN or ONAF
5. Tapping Range : ±5% ±2x2.5% ±4x2.5%
6. Regulator way : off-circuit-tap-changing or on-load-tap-changing
7. Phase : Single Phase or Three Phases
8. Connection Symbol : Yyn0 or Dyn11 or others
9. The altitude of installation could not be over 1000m;environment temperature should be less than 40
10. Coil temperature rise : 1000K
11. Cooling methods : AN or AF
12. Crust prevention class : IP00, IP20, IP23
13. Insulation class : F class
14. Insulation level:
10KV,power frequency withstand voltage 35KV,thunder impact voltage 75KV
20KV,power frequency withstand voltage 50KV,thunder impact voltage 125KV
35KV,power frequency withstand voltage 70KV,thunder impact voltage 170KV
15. Product Standard : GB1094 GB6450 GB/T10228 DIN42523 IEC726
16. Can run in 100% relative humidity or other harsh environment.
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