Siemens SIMATIC NET PROFIBUS manual Instructions for Installing Coarse Protection

Lightning and Surge Voltage Protection for LAN Cables Between Buildings

B.2.1 Instructions for Installing Coarse Protection

The coarse protection must be installed at the point where the LAN cable enters the building and connected to the building equipotential bonding system with low impedance.

The following are required to create the coarse protection:

SThe base section type no. 919506,

SThe protection module type B, type no. 919510 and

SThe shield contact terminals type no. 919508

To avoid EMC and environmental conditions affecting the coarse protection, it should be installed in a

Sprotective casing, type no. 906055

At the same time, the transition from the underground cable to the standard indoor cabling can be made here.

Figure B-2 Coarse Protection Installed at the Entry or Exit of the Building

PROFIBUS Networks SIMATIC NET	B-5
6GK1970-5CA20-0AA1 Release 2 05/2000