M-LB-(Ex-)2000-System – Surge Protection Barriers
Product Specifications
201
9-03
7
2.2
Application
The following illustrations show typical applications in connection with isolators
and zener barriers.
Figure 2.2
Example of an application with isolator
Figure 2.3
Example of an application with zener barrier
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.
Additional surrounding enclosure
Protected
electrical equipment
Protected
field device
Field side
Control side
Surge protection barrier
Surge protection barrier
Isolator
24 V
2-
1+
7-
8+
9+
250 Ω
11+
12-
Power Rail
24 V DC
2
1
3
5
4
2
1
3
5
4
2
1
7
8
x3
Additional surrounding enclosure
Protected
electrical equipment
Protected
field device
Field side
Control side
Surge protection barrier
Surge protection barrier
Zener barrier
24 V
2
1
3
5
4
2
1
3
5
4
Note!
For more information on mounting, installation and operation, refer to the following chapters.
