Lrm System Overview - Siemens NXAIR Operating Instructions Manual

Verifying safe isolation from supply

20.3 LRM system overview

Fig. 486: LRM system at the panel
Indication on LRM-ST
LRM-ST indication
266
Indication flashes
Indication lights up
Indication does not light
up or does not flash
NOTICE
Device system LRM
Before verifying safe isolation from supply with the LRM device system, do
absolutely check proper functioning of the LRM-ST voltage indicator.
Fig. 487: LRM-ST voltage indicator
NXAIR / ≤ 40 kA
Documentation to repeat test of
(1)
interface condition
Cover of test socket for L1,
(2)
removed
(3) LRM-ST, plugged on for L1
Covers of tests sockets for L2
(4)
and L3, fitted
Meaning
Phase not isolated from supply
Phase not isolated from supply
Phase isolated from supply
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