7SR224 Argus Installation
1.7 Fibre Optic Communication
!
Where fibre optic communication devices are fitted, these should not be viewed directly. Optical power meters
should be used to determine the operation or signal level of the device.
1.8 Front Cover
!
The front cover provides additional securing of the relay element within the case. The relay cover should be in
place during normal operating conditions.
©2010 Siemens Protection Devices Limited Chapter 5 Page 4 of 16
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