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M-LB-(Ex-)2000-System – Surge Protection Barriers
Product Specifications
2.2
Application
The following illustrations show typical applications in connection with isolators
and zener barriers.
Field side
Additional surrounding enclosure
4
5
Protected
Surge protection barrier
field device
Figure 2.2
Field side
Additional surrounding enclosure
4
5
Protected
Surge protection barrier
field device
Figure 2.3
The surge protection system can also be used to protect field devices in the hazardous area
of zones 0, 1 and 2 resp. 20, 21 and 22. The system components suitable for this application
are marked in blue.
Note!
For more information on mounting, installation and operation, refer to the following chapters.
3
3
2
2
1
1
Surge protection barrier
Example of an application with isolator
3
3
2
2
1
1
Surge protection barrier
Example of an application with zener barrier
Control side
1+
7-
4
8+
2-
5
9+
250 Ω
11+
12-
24 V DC
Power Rail
Isolator
Control side
1
8
4
x3
2
7
5
Zener barrier
24 V
Protected
electrical equipment
24 V
Protected
electrical equipment
7
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