H-System – Isolated Barriers and Termination Boards
Mounting and Installation
2023-03
21
Vertical and Horizontal Mounting
Both mounting options are possible. Unrestricted operation is possible across the entire
temperature range of the system in each mounting direction.
3.2 Isolated Barriers Mounting
Mounting in the Non-Hazardous Area
Mounting the Isolated Barriers on the Termination Board
Mount the barrier as described in the following section. See Figure 3.5
Mounting in Areas that Require the Equipment Protection Level Gc
Vertical mounting Horizontal mounting
Figure 3.3
Danger!
Explosion hazard from insufficient type of protection
The usage of modules with termination boards with insufficient type of protection can cause
sparks or other hazards for potentially explosive atmospheres that can ignite the surrounding
atmosphere.
Only use the modules in the hazardous area if the termination boards are also approved
for the hazardous area.
Danger!
Explosion hazard from live wiring of non-intrinsically safe circuits
If you connect or disconnect energized non-intrinsically safe circuits in a potentially explosive
atmosphere, sparks can ignite the surrounding atmosphere.
Only connect or disconnect energized non-intrinsically safe circuits in the absence
of a potentially explosive atmosphere.
Danger!
Explosion hazard from wrong mounting
The device safety can be impaired by external environmental influences and by mechanical
stress. That can lead to sparking that can ignite a surrounding potentially explosive
atmosphere.
Mount the device in a surrounding enclosure that complies with IEC/EN 60079–0
and that is rated with the degree of protection IP54 according to IEC/EN 60529.
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