Bender RCMA426H-DCB, Manual

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5 RCMA426H-DCB_D00066_00_M_XXEN/05.2014
1. Making effective use of this document
1.1 How to use this manual
This manual has been designed for electrically skilled persons
working in electrical engineering and electronics!
To make it easier for you to understand and revisit certain sections of text and
instructions in the manual, we have used symbols to identify important in-
structions and information. Examples of how such symbols are used appear
below:
1.2 Intended use
The AC/DC sensitive residual current monitor RCMA426H-DCB with its inter-
nal measuring current transformer is used to monitor earthed and resistive-
earthed systems (TN and TT systems) in which DC and AC fault currents may
occur. These systems involve loads with six-pulse bridge rectifiers or half-
wave rectifiers with smoothing, e.g. converters and chargers.
In the event of a rated residual current
I
Δ
n
of 6 mA, the device will switch an
alarm relay and the associated contactor in accordance with the operating
time specified in UL943.
Information calling attention to hazards are marked
with this warning symbol.
Information intended to assist the user to make optimum
use of the product are marked with the Info symbol.