Vacuum Pressure Impregnated (VPI) Dry Type Transformers
Vacuum Pressure Impregnated (VPI) dry type power transformers are primarily designed for stepping down high voltages from transmission and distribution systems to lower voltages which can be utilized in commercial, industrial, institutional or utility applications. They are ideally suited for both indoor and outdoor applications and require minimal maintenance to provide many years of reliable trouble free service. Unlike liquid filled transformers which are cooled with oil or a fire resistant liquid dielectric, dry type units utilize only environmentally safe, CSA and UL recognized high temperature insulation systems. Dry type designs provides a safe and reliable power source which does not require fire proof vaults, catch basins or the venting of toxic gasses. These important safety factors allow the installation of dry type transformers inside buildings close to the load, which improves overall system regulation and reduces costly secondary line losses.
Features:
- Capacity: 15 to 500 kVA Three Phase
- Voltage Class: up to 600V (30kV BIL)
- Cooling: Self Cooled (ANN) [Optional Forced Air Cooled (AFN/AF)]
- Frequency: 60Hz [50/60Hz Optional]
- Conductors: Copper (Cu) or Aluminum (Al) Windings
- Insulation System: 220°C (150°C Temperature Rise) [Optional 115°C & 80°C Rise Available]
- Impregnation: Epoxy Vaccum Pressure Impregnated (VPI) and Baked [Optional VPE]
- Efficiency: U.S. - (DOE 2016) DOE 10 CFR Part 431, Canada - (NRCan 2019) SOR/2018-201, Amd. 14 & ON Reg. 404/12
- Primary Taps: Typically +/-2 x 2.5% taps
- Sound Level: Meets IEEE C57.12.01
- Configuration: Terminal Bus Stubs Suitable For Cables [Optional Unit-Substation or Padmount Configuration]
- Enclosure Type: Type 1 Indoor [Type 2, 3R, 4, 4X & 12 Optional]
- Enclosure Finish: ANSI 61 Grey Powder Coat
