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Utility Transformer Brokers (UTB) is a supplier of Used, New, Reconditioned, and Rewound oil filled Mobile Substation transformers. UTB keeps a large supply of Mobile subs in our database that are in stock and ready to ship at a moment’s notice.
Mobile Subs provide the capability to quickly restore electrical service following an outage or are used to provide temporary service while permanent equipment is procured. Mobile subs are mounted on a trailer along with protective devices such as breakers & switchgear, and are usually a low profile design so they can be transported quickly.
Manufacturers of Mobile Subs include: ABB, Kuhlman, Central Maloney, Siemens, Ferranti Packard, Westinghouse, Allis Chalmers, RTE/ASEA, Uptegraff, McGraw-Edison, Howard, Cooper, GE, Prolec, Waukesha, Virginia, Pennsylvania, WEG, Hyundai, and Delta Star.
Typical base ratings for Mobile Subs are: 2.5 MVA, 3.75 MVA, 5 MVA, 7.5 MVA, 10 MVA, 12 MVA, 15 MVA, 18 MVA, 24 MVA, 30 MVA, 45 MVA, 50 MVA
Typical high voltage ratings for Mobile Subs are: 230000 Delta, 161000 Delta, 138000 Delta, 115000 Delta, 69000 Delta, 46000 Delta, 34500 Delta, 24940 Delta
Typical low voltage ratings for Mobile Subs are: 34500Y/19920, 24940Y/14400, 13800Y/7970, 13200Y/7620, 13090Y/7560, 12470Y/7200, 4160Y/2400