NETWORK TRANSFORMERS

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#NETWORK TRANSFORMERS

NETWORK TRANSFORMERS

ABB has completed the development of the dry-type transformer intended for network applications, even submersible. The unit is inside of a completely sealed tank and both tank and active assembly have been designed and tested to the IEEE C57.12.40 standard for network transformers (amended for dry-type features). The absence of oil eliminates the threat to the surrounding environment during an internal failure.

Main features of dry-type submersible network transformer are: complete absence of oil, entirely welded tank assembly, N2 gas overpressure for tank deterioration monitoring, 2-position ground switch, 70 percent overloading capability, similar footprint to liquid-filled units with cooling fins and power rating up to 1,000 kVA and 15 kV primary voltages.

 

Product scope

Up to 1 MVA

High voltage up to 15 kV

Classes E2, E3, C2, F1

Frequencies: 50 Hz, 60 Hz and 16 2/3 Hz

Cooling: AN

Insulation system temperature: F and H

Partial discharges <10 Pc

 

 

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