絶縁トランスを用いた医用安全電源装置

概要

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A new supply equipment, which aims at protection from electrical shock against medical electronic equipments. Theoretically, equivalent insulation and equivalent potential grounding method are applied. The new supply equipment of isolating transformer (1 KVA), protection resistor (1 KΩ), additional protective earth terminal, receptacle with earth terminal, residual current operated circuit breaker, over current protection breaker, and metal case. In its circuit, the protection resistor is connected between output side of isolating transfomer and earth terminal to reduce electric potential (below 10 mV) between power to the ground, and/or the equipments against over current, when medical electronic is out of order. After actual trial of this new supply equipment, the author confirmed that the electric potential keeps less than 10 mV to satisfy the function of electrical shock proof and safety.
日本医療機器学会の論文
1987-07-01