J
"One could argue that this is not "electric shock" and therefore specific requirements for MOPP do not apply."
Reading the 60601-1 annex implies that we should include other harms, including tissue necrosis, when implementing protection regimes.
The guidance I have received from test labs generally matches Peter's statements. Personally I would ensure no cascading failures can result from a single component failure that would lead to unacceptable risk. For example with an ECG if you have input diode clamps to a smaller voltage than the supply voltage of an input amplifier, a short on the input amplifier to a power rail could result in unacceptable DC current flow through the leads.
Reading the 60601-1 annex implies that we should include other harms, including tissue necrosis, when implementing protection regimes.
The guidance I have received from test labs generally matches Peter's statements. Personally I would ensure no cascading failures can result from a single component failure that would lead to unacceptable risk. For example with an ECG if you have input diode clamps to a smaller voltage than the supply voltage of an input amplifier, a short on the input amplifier to a power rail could result in unacceptable DC current flow through the leads.
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