Medical isolation transformers conform to EN/UL60601 medical use directive

November 26, 2012 // By Julien Happich
Reo has launched Reomed II, a range of medical isolation transformers for the galvanic and safe isolation of medical equipment from the mains supply. The entire range is designed to conform to EN/UL60601 medical use directive.

Medical isolation transformers reduce the risk of electric shock to people who may already be in a compromised state of health, by removing the connection between neutral and earth which exists in a normal un-isolated system.
The Reomed II medical isolation transformers are designed for operation at 1000 to 2200 VA. Reomed I has already been externally tested and achieved the standards IEC/EN60601-1/A2: 1995, IEC/EN60601-1-2:2001, UL60601-1 and CSA C22.2 No. 601.1-M90 and REOMED II will be accredited shortly. Reo uses polyurethane coated toroidal cores, which are more efficient and less likely to radiate an electromagnetic field than other designs.

The sturdy aluminium housings used on Reomed II ensures that the unit is protected against physical damage and against water/dust ingress. A secondary insulation layer provides additional insulation between primary and secondary windings to protect against breakdown to 4.4kV. Encapsulation allows better physical protection and less likelihood of insulation degradation with age. A thermal sensor ensures that the unit will cut-out in the event of an overload, and will restart again when cooled down. An earthed copper screen guarantees that leakage current is further reduced to well below specified limits.
Providing fused live and neutral necessary for EN60601 compliance, Reomed II also delivers lower losses than conventional transformers, especially in no-load or low-load conditions. In addition, the low magnetic stray field of the product means it is less likely to interfere with other equipment. A built-in inrush current limiter prevents fuses from blowing on start-up and requires only a minute to reset.

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