Electrical • Power Distribution • Transformers • Oil Filled Transformers

  • ABB

    ABB manufactures a range of liquid-filled power and distribution transformers for utility, industrial and commercial applications. Types of liquid-filled transformers include: groundmount IEC, substation ANSI, padmount IEC, polemount ANSI, GSU, HVDC, furnace, variable speed drive, railway, marine distribution, substation non-auto, substation secondary unit ANSI, padmount ANSI, network, substation auto, shell form, rectifier, booster, windmill, marine propulsion, and phase shifter.

  • Cooper Power Systems

    Cooper Power Systems manufactures liquid-filled transformer types including: over head transformers, pad-mounted transformers, and substation transformers, SST transformers. All the company's transformers are available with standard electrical grade mineral oil. Aside from transformers, Cooper manufactures and supplies fire-resistant dielectric fluid found used within transformers.

  • GE

    GE Industrial manufactures a line of liquid-filled distribution transformers with high voltages up to 34.5 kV and rating up to 12 MVA. The primary and secondary liquid-filled substation transformers are used in utility, commercial and industrial applications, and meet applicable ANSI/IEEE and IEC standards.

  • Howard Lighting Products

    Howard Transformers manufactures liquid-filled substation transformers for manufacturing facilities, chemical plants, refineries, office buildings, schools, hospitals, restaurants, banks, internet service facilities, and shopping centers. The company offers four liquid-filled substation configurations: primary open, secondary open, primary unit, and secondary unit. All the liquid-filled transformers feature low-voltage ratings above or below 1 kV.

  • Pacific Crest Transformers

    Pacific Crest Transformers designs and manufactures liquid-filled distribution transformer types including: padmount, station, substation, and grounding.

  • Square D

    Schneider Electric manufactures substation liquid-filled transformers and padmount liquid-filled transformers for commercial, industrial and underground power distribution system applications. The substation liquid-filled transformers feature primary voltage from 2.4 kV to 69 kV in 225 through 20,000 KVA sizes. The padmount liquid-filled transformers feature primary voltages from 2.4 kV to 46 kV in 45 through 20,000 KVA sizes.


    ELSCO produces oil-filled transformers that feature 500 KVA to 5000 KVA, high voltage ratings from 2400 delta through 14400 delta, and low voltage ratings from 208Y/120 up to 4160Y/2400. The oil-filled transformers can be pad mount or station types.


    ERMCO manufactures oil-filled distribution transformer types including single phase pole and pad mounted, and three phase pad and pole mounted.

  • MGM Transformer Co

    MGM Transformer Co. manufactures three phase, liquid-filled substation transformers that feature 75 KVA to 10,000 KVA. The transformers are designed to meet ANSI/IEEE and NEMA standards.

  • Midwest Electrical Testing & Maintenance Co., Inc.

    MIDWEST Electrical Testing & Maintenance Co. distributes oil-filled transformers manufactured by RTE, Allis Chalmers, Line Material, Pennsylvania, General Electric, McGraw Edison, Square D, Vantran, Westinghouse, GEC Alsthom, ITE, Standard, Cooper Power Systems, Wagner, Federal Pacific and Magnetek.

  • Niagara Transformer Corp

    Niagara Transformer Corp. designs and manufactures liquid-filled transformers with mineral oil-filled fluids. The liquid-filled transformers feature tap-changing capabilities, with up to 30 MVA and voltages up to 69 kV. The liquid-filled transformers can be built with radiators, forced air, forced oil air, forced oil water, or oil with natural water-cooled heat exchangers.

  • Baumer Ltd.

    Relectric Supply Co. distributes oil-filled padmount transformers and oil-filled substation transformers manufactured by Rex Power Magnetics and Hammond.

  • SD Myers Inc

    SD Myers Inc. builds oil-filled transformers that are part of fully automated mobile, skid mounted or plant stationary systems. The company also provides oil and fluid testing for various transformers.

  • Sunbelt Transformer Ltd

    Sunbelt Transformer manufactures liquid-filled padmount transformers and liquid-filled substation transformers for commercial, industrial and utility applications. The liquid-filled padmount transformers feature 75 kVA through 7500 kVA, while the liquid-filled substation transformers feature 75 kva through 50 MVA.

  • Virginia Transformer Corp

    Virginia Transformer Corp. engineers and manufactures liquid-filled transformers up to 300 MVA and 230 kV. The transformers are used in subway and rapid transit, utilities and power plants, chemical plants, mining operations, paper and steel mills, oil and gas, office and shopping complexes, water treatment plants, and research facility applications.

  • Delcor Power Products

    Delcor Power Products manufactures and rebuilds liquid-filled pad mount transformers in sizes up to 7500 kVA and voltages up to 38 kV. The company also provides rebuilt and reconditioned substation transformers.