Please enable JavaScript.
Coggle requires JavaScript to display documents.
CLASSES AND TYPES OF MEDICAL ELECTRIAL EQUIPMENT - Coggle Diagram
CLASSES AND TYPES OF MEDICAL ELECTRIAL EQUIPMENT
Classes
Class II
The method of protection against electric shock of class II equipment is either double insulation or reinforced insulation.
The medical electrical equipment should be fused at the equipment end of the supply lead in either mains conductor or in both conductors if the equipment has a functional earth.
symbol:
Class III
Class III equipment relies on the fact that no voltages higher than safety extra low voltage (SELV) are present. SELV is defined in turn in the relevant standard as a voltage not exceeding 25V ac or 60V dc
Class III equipment is either battery operated or supplied by a SELV transformer.
.symbol:
Class I
Has protective earth
The medical devices should have fuses at the equipment end of the mains supply lead in both the live and neutral conductors.
symbols:
Types
Type BF
Quite similar to type B but with isolated or floating (F-type) applied part or parts.
symbol:
Type CF
Equipment providing a higher degree of protection against electric shock than type BF, particularly with regard to allowable leakage currents, and having floating applied parts
symbol:
Type B
Equipment providing a particular degree of protection against electric shock, particularly regarding allowable leakage currents and reliability of the protective earth connection
symbol:
