Additional (Optional) Fibre Optic Connections; Figure 6.3-1 Data Comms To Multiple Devices Using 7Sg24 And F.o. Star Network; Figure 6.3-2 Data Comms To Multiple Devices Using 7Sg24 And F.o. Ring Network - Siemens Argus 7SR21 Installation Manual
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7SR21 & 7SR22 Argus Installation Guide
6.3
Additional (Optional) Fibre Optic Connections
Rear Com ports 3 and 4 comprise Fibre–Optic ST™ (BFOC/2.5) bayonet connectors-4 per product. 62.5 / 125μm
glass fibre is recommended for all distances.
When installing fibre, ensure that the fibres' bend radii comply with the recommended minimum for the fibre used-
typically 50mm is acceptable.
Figure 6.3-1 Data Comms to Multiple Devices Using 7SG24 and F.O. Star Network
Figure 6.3-2 Data Comms to Multiple Devices Using 7SG24 and F.O. Ring Network
The F.O. data communications link with a particular relay will be broken if the relay element is withdrawn from the
case, all other relays will still communicate.
©2010 Siemens Protection Devices Limited
Chapter 5 Page 15 of 22
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