Siemens NXAIR M - LRM System Overview

Verifying safe isolation from supply
126 NXAIR M 139-2021.9 / 07
16.3 LRM system overview
Fig. 211: LRM system at the panel
Indication on LRM-ST
LRM-ST indication
Meaning
Indication flashes
Phase not isolated from supply
Indication lights up
Phase not isolated from supply
Indication does not light
up or flash
Phase isolated from supply
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. 212: LRM-ST voltage indicator
(1)
Documentation to
repeat test of interface
condition
(2)
Cover of test socket for L1,
removed
(3)
LRM-ST, plugged in for L1
(4)
Covers of tests sockets for L2
and L3, fitted