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M-LB-(Ex-)2000-System Surge Protection Barriers
Installation
3
Installation
3.1
Mounting
Danger!
Explosion hazard from wrong mounting
Mounting the device in the wrong way can impair the intrinsic safety of the signal loops.
This can cause sparks that can ignite a potentially explosive atmosphere.
•
Only use the blue marked devices for intrinsically safe circuits.
•
Always mount the devices in the same orientation on the DIN mounting rail.
•
Observe the derating of the current depending on the ambient temperature.
•
The degree of protection IP20 can be achieved under the following conditions:
Mount the devices side by side on the DIN mounting rail. Use the insulation spacer.
Mounting in the Explosion Hazardous Area
Observe the following warnings when mounting or carrying out installations in the explosion
hazardous area.
Danger!
Explosion hazard from wrong mounting
Mounting the device in the wrong way can impair suitability for specific temperature class.
This can cause surface temperatures which can ignite a potentially explosive atmosphere.
Observe the derating of the current depending on the ambient temperature and the
temperature class.
Danger!
Explosion hazard from wrong mounting of devices with equipment protection level Gc
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 with equipment protection level Gc 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.
Danger!
Explosion hazard from live wiring of non-intrinsically safe circuits
If you connect or disconnect energized 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.
15
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