Installation and connection
23
RCMB300-series_D00372_01_M_XXEN/06.2019
4.7 Installation instructions for measuring current transformers
4.7.1 Protective conductors and live conductors
Make sure that all current-carrying cables are rout-
ed through the measuring current transformer.
Never route an existing protective conductor
through the measuring current transformer.
The cable diameter may not exceed half the cur-
rent transformer diameter.
4.7.2 Bending cables
The cables may only be bent at a certain distance
from the measuring current transformer.
4.7.3 Routing cables centrally
The cables must be aligned with the centre of the
measuring current transformer.
Do not route any shielded cables through the measuring current transformer!
Device damage due to high induction currents!
High currents can be induced into the conductor loop due to the AC/DC
sensitive measuring technology used. Do not route protective conductors and
low-resistance conductor loops through the measuring current transformer!
Device damage due to interference pulses!
The connecting cable (supply, analogue interface ...) must not be routed
directly past the current transformer core.
Risk of injury due to accessible live conductors!
The measuring current transformer must be connected to the corresponding
evaluator before the first use and before commissioning of the monitored
system.
PE
L1
L2
L3
N
*
*
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