Safety instructions
13
RCM420_D00057_03_M_ XXEN/03.2021
2.3 Intended use
The AC and pulsed DC sensitive residual current monitor RCM420 (Type A)
from Bender is designed for fault and residual current monitoring in earthed
power supply systems (TN/TT systems) where an alarm is to be activated in the
event of a fault, but disconnection must be prevented. In addition, the device
can be used to monitor single conductors, such as PE conductors, N-PE con-
nections and PE-PAS connections.
Two separately adjustable response ranges I
Δn1
and I
Δn2
allow to distinguish
between prewarning and main alarm (I
Δn1
= 50…100 % of the set response
value I
Δn2
).
In order to meet the requirements of the applicable standards, customised pa-
rameter settings must be made on the equipment in order to adapt it to local
equipment and operating conditions. Please heed the limits of the range of
application indicated in the technical data.
Any use other than that described in this manual is regarded as improper.
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