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Type of
Protection
Explosion-proof
enclosure d
Increased-safety
enclosure e
ET 200iS Distributed I/O Station
A5E00087831-02
Meaning
The power supply module is
installed in a stable (explosion-
proof) enclosure. If the explosive
atmosphere within the enclosure
ignites, the enclosure will withstand
the explosion and contain the
explosion within the power supply
module.
In zone 1 of the hazardous area,
the ET 200iS must be installed in
an additional enclosure. The
enclosure must have the increased
safety e type of protection.
This type of protection involves
additional measures to avoid the
occurrence of high temperatures,
sparks and arc-over.
In zone 2 of the hazardous area,
this type of protection is
unnecessary. Here, the ET 200iS
must simply be installed in an
enclosure suitable for zone 2 with
at least degree of protection IP 54.
Product Overview
Representation
2-11
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