Classes and type of medical electric - Coggle Diagram
Classes and type of medical electric
Equipment of class I has a protective earth. Insulation between live components and exposed conductive parts such as the metal enclosure is the fundamental means of protection. The supplementary safety takes place in the vent of a fault that would otherwise cause an exposed conductive component to become alive.
In the case of class II equipment, the type of protection against electric shock is either double insulation or reinforced isolation. In double insulated appliances, the first layer of insulation provides essential protection. If basic protection fails, a second layer of insulation that avoids contact with live parts provides additional protection.
Class III devices are classified as those in which electric shock security relies on the fact that there are no voltages higher than extra low voltage (SELV) safety. In the related norm, SELV is in turn, specified as a voltage not exceeding 25V ac or 60V dc.
Equipment which provides a specific degree of protection against electric shock, in particular with regard to permissible leakage currents and if present, the reliability of the protective earth link
As type B but with the part or parts isolated or floating (F type) applied
Equipment that offers a higher degree of electrical shock safety than Type BF, in particular with regard to acceptable leakage currents and floating parts.
All electrical equipment is divided into groups according to the electrical shock protection method that is used.
The type classification determines the degree of protection for medical electrical equipment