MV design guide - Schneider Electric
MV design guide - Schneider Electric
MV design guide - Schneider Electric
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Design rules<br />
Protection Index<br />
Temperature<br />
derating must be<br />
considered.<br />
The IP code<br />
Introduction<br />
Protection of people against direct contact and protection of equipment<br />
against certain external influences is required by international standards<br />
for electrical installations and products (IEC 60 529).<br />
Knowing the protection index is essential for the specification, installation,<br />
operation and quality control of equipment.<br />
Definitions<br />
The protection index is the level of protection provided by an enclosure<br />
against access to hazardous parts, the penetration of solid foreign bodies<br />
and of water. The IP code is a coding system to indicate the protection<br />
index.<br />
Applicational scope<br />
It applies to enclosures for electrical equipment with a rated voltage of<br />
less than or equal to 72.5 kV. It does not concern the circuit breaker on its<br />
own but the front panel must be adapted when the latter is installed within<br />
a cubicle (e.g. finer ventilation grills).<br />
The various IP codes and their meaning<br />
A brief description of items in the IP code is given in the table on the<br />
following page.<br />
<strong>Schneider</strong> <strong>Electric</strong><br />
Merlin Gerin <strong>MV</strong> <strong>design</strong> <strong>guide</strong><br />
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