Transformers ensure medical systems meet European performance standards

20-02-2015 | REO (UK) Limited | Connectors, Switches & EMECH

REO UK has launched a new compact transformer for use in medical
applications. The REO Unimed transformer is designed to overcome the growing
challenge faced by the medical profession in ensuring medical setups meet
European safety and performance standards to protect patients, especially
those on life-critical machines. In response, the Unimed was developed to
be built into an OEM device to provide full electrical isolation and
compliance with international standards.

The continued dependence on high-powered equipment in the medical industry,
including body scanners, heart monitors, electrocardiograms (ECGs) and
dental treatment devices has raised concerns about the effects of
non-isolated equipment. Power surges, electromagnetic interference (EMI),
overload and core inefficiency, can raise energy costs, reduce reliability
and, at worst, result in system failure.

Conforming to international standards DIN EN IEC 60601-1 3rd edition, the
Unimed transformer can be configured to use a variety of input voltage
combinations from 0-115V or 0-100-115V, providing an output voltage of 230V.
Rated from 100-300 VA and weighing between 1.9 and 3.2kg for larger
applications, the unit offers high efficiency and high capacity with no hum
and low power losses as well as a reduced magnetic stray field, says the

Commenting, Steve Hughes, managing director, REO UK, said: "The open
construction of the Unimed series was designed to allow easy installation in
compact housing and onto mounting plates. For use in even the most
demanding applications, the Unimed transformer is fully encapsulated and
achieves an ingress protection rating of IP54, this prevents dust and water
from getting into the device. In hospital environments it is especially
important that electrical and medical computer data networks are isolated
from the mains AC supply and telephone lines because, during invasive
surgery, even the slightest current leakage, as low as 50mA, can cause heart
failure or paralysis. To achieve this, standard terminals on the Unimed
allow for easy connection and the special winding design ensures the safe
separation of primary and secondary circuits. The unit also complies with
the required air and creepage distances."

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