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M-LB-(Ex-)2000-System Surge Protection Barriers
Installation
3.3
Signal Loops Disconnection for Checking
During commissioning, you can disconnect the signal loops for the following checks.
•
Insulation check of the cable on the unprotected side
•
Check of the signal loops
Danger!
Explosion hazard from sparking when using operating elements on devices with equipment
protection level Gc
Using operating elements in a potentially explosive atmosphere can cause sparks
that can ignite the surrounding atmosphere.
Only use operating elements (e. g., switch, slider, button, etc.) in the absence of a potentially
explosive atmosphere.
Disconnecting the Signal Loops
Use a suitable screwdriver for disconnecting.
1.
Insert the screwdriver (4) into the groove (5) of the disconnect levers.
2.
To disconnect the unprotected side on terminal 3, lift disconnect lever 1 (3) until the lever
reaches its end position.
3.
To disconnect the protected side on terminal 2, lift disconnect lever 2 (2) until the lever reaches
its end position.
Figure 3.11
1
Device
2
Disconnect lever 2 for terminal 2
3
Disconnect lever 1 for terminal 3
4
Screwdriver
Groove
5
24
1
2
3
4
5
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