An isolation transformer is frequently used as a means of complying with several of the electrical requirements of IEC
60601-1. It has the following advantages:
A 1:1 isolation transformer allows the use of equipment which otherwise would not comply with IEC 60601-1, e.g. PC's.
In systems with separately powered components, e.g. PC, screen, printer, it permits a much simpler and cost effective
solution, rather than each component having an IEC 60601-1 compliant power supply.
It isolates the neutral line from earth, simplifying product design in many situations.
It can be simply set up to handle switching between 110V and 230V power systems.
The main disadvantage of an isolation transformer is its size and weight.
Check the information on components approvals for details of what paperwork you will need from the manufacturer of the
isolation transformer when you submit your product to a laboratory for testing to IEC 60601-1.