Siemens PLT130
.
1994

4/17

Overvoltage protection
Configuring notes and ordering data
AF Connector board ”Remote bus” GS Coarse over voltage protection Cable lengths: a < 25 m
ES Grounding rail IK Inhousecable b 25 to 50 m
FE Foundation ear th PA Equipotential bonding c < 50 m
FK Standard remote bus cable T Participant
FS Fine over voltage protection
Fig.4/25 App licationof coars e and fine overvoltage protection components with different lengths of cable
Configuring notes
The coarse overvoltage protection m ust be provided for all re-
mote bus cables prior to their exit points from the buil ding and
also in the immediate vicini ty of the foundation earth connection.
The connection between the coarse protection and the founda -
tion earth must be kept as short as possible.
The coarse protection is also recommended i f the remote bus
connects cabinet groups which are positioned m ore than 50 m
from one another within a building. In t his case the coarse
protection must be installed di rectly next to the last par ticipant
before the longer inhouse cable, and connected to t he potential
earth of the cabinet.
The fine protection must be provided for each bus participant
which is directly connected to a coars e protection component.
Fine protection is required for both par ticipants if the distance
between the bus participants i s > 25 m.
The cable clamps for the various t ypes of remote bus cable are
included in the delivery of the overvoltage protection.
Ordering data
OrderNo.
Coarse overvoltage protection
forthe CS 275 bus system
6DS9 208-8AA
Fine overvoltage protection
forthe CS 275 bus system
6DS9 210-8AA
For further information refer to: Order No.
”TELEPERMM, instructions and
guidelines for planning, installation and operation”
German C79000-G8000-C417
English C79000-G8076-C417
Created with "Chameleon CMYK PDF Creator" for Wolfgang Strozyk at Siemens AG
This catalog is out of date, see note on page 2