• “Intrinsically safe" protection places increased demands on
planners and installers than the other types of protection.
• This is because intrinsic safety is not only the state of a
particular single device itself, but also dependent on:
• the correct and safe electrical connection of all devices in
an intrinsically safe circuit
• correct installation regarding the protection of the
intrinsically safe circuit from external energy
• Only suitable for circuits with rather low power requirements,
typically less then 2W (in our case around 500mW)
Intrinsic Safety: Limitations
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