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Howard Industries network transformers are designed and built according to the most exacting engineering standards to provide many years of outstanding performance and reliability in the most demanding utility network applications. Network transformers are typically used to supply power to grid-type secondary distribution systems in areas of high load density such as found in large cities and are designed for either vault-type or subway-type applications. Vault-type network transformers are designed for installation in above-ground dry vaults, where occasional submersion may occur. Subway-type network transformers are designed for installation in subsurface vaults, where frequent or continuous submerged operation is likely. Subway designs may also be used in vault-type applications. Product scope includes capacities from 300 kVA through 2,500 kVA with high-voltage ratings from 2.4 kV through 34.5 kV and low-voltage ratings through 600 Volts.
Air Test Provision (Tank & Switch Chamber)
Weld-on Magnetic Liquid Level Gauge (Tank & Switch Chamber)
Dial Type thermometer (Tank)
Bolted Hand Hole
Network Throat per IEEE/ANSI C57.12.40 with Enclosed Shipping Guard
Welded Spade Secondary Neutral
200 Amp Deadfront Bushings (Top of Switch Chamber)
3 Position Network Disconnect and Grounding Swith (Deadbreak)
Single Switch Chamber Design with Bolted and Gasketed Cover
Cu-Bearing Steel Construction
Paint - Catalyzed Epoxy Primer plus Catalyzed Urethaned Enamel Top Coat (3.0 mils Nominal Dry Thickness)
Bolted or Welded Secondary Bushings