Bender RCMA421H-DCB, Руководство пользователя

Страница: 5 / 40

5 RCMA421H-DCB_D00062_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 RCMA421H-DCB with its meas-
uring current transformer WN-35BS 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 operating current I
Δ
n
of 6 mA, the device will
switch an alarm relay and the associated contactor in accordance with the op-
erating time specified in UL943.
The warning symbol indicates a potential dangerous
situation that may result in bodily injury and/or damage
to property.
Observe the associated safety instructions.
Information intended to assist the user to make optimum
use of the product are marked with the Info symbol.