Intrinsic safety
Electrical safety protection technique / From Wikipedia, the free encyclopedia
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Intrinsic safety (IS) is a protection technique for safe operation of electrical equipment in hazardous areas by limiting the energy, electrical and thermal, available for ignition. In signal and control circuits that can operate with low currents and voltages, the intrinsic safety approach simplifies circuits and reduces installation cost over other protection methods. Areas with dangerous concentrations of flammable gases or dust are found in applications such as petrochemical refineries and mines. As a discipline, it is an application of inherent safety in instrumentation. High-power circuits such as electric motors or lighting cannot use intrinsic safety methods for protection.
European Union directive | |
Text with EEA relevance | |
Title | Equipment and protective systems intended for use in potentially explosive atmospheres |
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Current legislation |
60079-11:2023 | |
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EN standard | |
Reference | 60079-11:2023 |
Status | Current |
Title | Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i" |
Intrinsic safety devices, can be sub-dividend in to:
- Intrinsically safe apparatus
- Associated apparatus