Transformers – LV & MV Dry type
Jefferson Electric has manufactured dry-type transformer products since 1915. We provide quality products to the commercial, industrial and OEM marketplace. Our experienced design engineers are ready to create the custom products you require.
Medium Voltage Power
Jefferson Electric’s medium voltage power transformers offer an economical alternative for industrial facilities and process lines, drilling and mining installations and commercial power applications.
Class I Div 2
Class I Division 2 units are key in hazardous locations in maintaining a safe environment.
Single-Phase Encapsulated
General purpose encapsulated transformers rated 0.050 KVA to 25 KVA for lighting, industrial and commercial applications. Can be used indoors or outdoors.
Single-Phase Ventilated
General purpose ventilated transformers rated 25 KVA to 100 KVA for lighting, industrial and commercial applications. Can be used indoors or outdoors (with optional weathershields).
Three-Phase Encapsulated
General purpose encapsulated transformers rated 3 KVA to 15 KVA for lighting, industrial and commercial applications. Can be used indoors or outdoors.
Three-Phase Ventilated
General purpose ventilated transformers rated 15 KVA to 500 KVA for lighting, industrial and commercial applications. Can be used indoors or outdoors (with optional weathershields).
Three-Phase Encapsulated
General purpose encapsulated transformers rated 30 KVA to 75 KVA for rugged environments including refineries, chemical plants, and marine applications.
Drive Isolation
Three-phase transformers; Encapsulated rated 3 KVA to 11 KVA and Ventilated rated 14 KVA to 550 KVA. Designed for industrial and commercial applications using SCR-controlled adjustable frequency or DC drives.
Non-Linear
The Jefferson® Plus™ line of non-linear transformers are designed to meet the load demands caused by computers and other electronic equipment. Available in ratings from 15 KVA to 300 KVA. Specified using the Underwriters Laboratories K-factor rating standard.
Buck Boost
Jefferson Electric Powerformer™ single-phase encapsulated Buck-Boost transformers are the most economical means available for stepping voltages up or down in many common applications. Available in ratings from 0.050 KVA to 10 KVA.
Industrial Control Transformers
Jefferson® Industrial Control encapsulated transformers are available from 50 VA to 5000 VA for use in industrial and commercial control applications.
Pool and Spa
Jefferson® Pool and Spa single-phase encapsulated transformers are available use with submersible lighting fixtures of 100 to 1000 lamp watts.
Outdoor Lighting
Jefferson® Outdoor Lighting transformers, 300 Watt to 1200 Watt, up to 22V taps available.
Custom Solutions
Jefferson’s experienced staff will design and produce the transformer that precisely matches your exact specifications and regulatory requirements to support your installation.
Seismic Qualified
Jefferson Electric offers Seismic Qualified Transformers. Many construction projects and their components are now required to be seismic qualified. A seismic qualification ensures the component will withstand and operate after an earthquake.
Totally-Enclosed, Non-Ventilated
Jefferson Electric’s line of totally enclosed, non-ventilated transformers (TENV) are designed for use in dirty environments such as production areas where the transformer may need to be washed down. The air in dirty environments may contain conductive, combustible material, moisture or dust.