Types of protection of the ET 200iSP
The types of protection include design and electrical measures relating to the equipment to
achieve explosion protection in the hazardous areas.
Table 1-4
Types of protection
Type of Protection
Meaning
Representation
Intrinsic safety i
All voltages, currents, inductance and
capacitance occurring are limited by
electrical measures (intrinsically safe) -
sparks or thermal effects capable of
causing ignition cannot occur.
Explosion-proof enclo‐
sure d
The power supply module is installed in
a stable (explosion-proof) enclosure. If
the explosive atmosphere within the en‐
closure ignites, the enclosure will with‐
stand the explosion and contain the ex‐
plosion within the module.
Increased-safety enclo‐
sure e
In the Zone 1 hazardous area, the ET
200iSP must be installed in an additional
enclosure. The enclosure must have the
increased safety e type of protection.
This type of protection involves addition‐
al measures to avoid the occurrence of
high temperatures, sparks and arc-
over.
In the Zone 2 hazardous area, this type
of protection is unnecessary. Here, the
ET 200iSP must simply be installed in an
enclosure suitable for zone 2 with at
least degree of protection IP 54.
Encapsulation "m"
In electronic module 2 DO Relay UC60V/
2A, the internal relay is embedded in a
sealing compound. This means that an
explosive atmosphere surrounding the
equipment can be ignited neither by
sparks nor by unacceptable heating.
Product overview
1.3 ET 200iSP in the Hazardous Area
ET 200iSP
22
Operating Instructions, 11/2017, A5E00247483-07
Содержание SIMATIC ET 200iSP
Страница 82: ...Configuration options 3 18 Redundancy with IM 152 ET 200iSP 82 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 184: ...Commissioning and Diagnostics 6 8 Diagnostics with STEP 7 ET 200iSP 184 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 194: ...Maintenance 7 7 Reading service data ET 200iSP 194 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 220: ...Terminal modules 9 6 Terminal module TM RM RM ET 200iSP 220 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 372: ...Glossary ET 200iSP 372 Operating Instructions 11 2017 A5E00247483 07 ...
Страница 384: ...Index ET 200iSP 384 Operating Instructions 11 2017 A5E00247483 07 ...