Discussion on the difference of current-carrying capacity requirements and tests of protective grounding impedance in standards
Electrical equipment should be designed,manufactured,sold and used to minimize the risk of damage to life,health and property and to achieve an acceptable level.The protective grounding of medical electrical equipment,as a protect in the situation of the single fault condition of a basic insulation failure,leads the fault current to the network power supply by connecting the circuit.Combined with the latest versions of IEC 60601-1 and CAN/CSA-C22.2 No.60601-1,the differences of current-carrying capacity requirements and tests of protective grounding impedance are illustrated.It is designed to help interested parties consider the commonality and difference of equipment's protective grounding impedance in the country where products are expected to be sold during product design,and timely understand the relevant standard requirements and identify at the design input phase,and correct testing verification at the design verification stage at the same time so that the product can meet the technical requirements of different countries.
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