An isolation transformer is a transformer used to transfer electrical power from a source of alternating current (AC) power to some equipment or device while isolating the powered device from the power source, usually for safety reasons. Isolation transformers provide galvanic isolation and are used to protect against electric shock, to suppress electrical noise in sensitive devices, or to transfer power between two circuits which must not be connected.
A transformer sold for isolation is often built with special insulation between primary and secondary, and is specified to withstand a high voltage between windings.
- Voltage stepdown from medium-voltage
- Within equipment, to act as an integral part of the power conversion circuits
- To create a local ground bounded neutral
- Reduce harmonic currents
- Provide taps to accommodate abnormally high or low mains voltage
- Eliminate ground loops with multiple generators or mains source
- Lab Equipment
- Medical Equipment
- CNC Machines
- Industrial Machines
- Nuclear Power Plants
- Process Control Equipment