DRP pulsating AC/DC-sensitive type A0 pages

Doepke
The experts in residual current protection technology

DATA SHEET
DRP
pulsating AC/DC-sensitive type A
Article No. 09340110

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Function
MRCDs (modular residual current devices) consist of a combination of residual current transformer and evaluation unit. In connection
with a separate external circuit-breaker, they allow the implementation of protective measure "Automatic switch-o of power supply" as
per DIN VDE 0100-410 and IEC 60364-4-41. They are primarily useful when no RCCBs or CRBs can be used due to high load currents or
mains voltages. The MRCD detects the residual current and evaluates it in terms of its level and duration. If the residual response current
thresholds and the response time are exceeded, it activates a separate switch-o device that disconnects the system part for which it
is responsible from the power supply. Modular residual current circuit-breakers from the DRP series have a high protection class and an
increased rated voltage of up to 500 V AC. They can therefore be used in extreme environments, such as in mining. Both the residual
response current and the response delay can be adjusted on the device. The devices also have a potential-free changeover contact for
controlling the switch-o device. Modular protective devices with residual current characteristic A detect sinusoidal AC currents as well as
pulsating DC residual currents. Devices of this standard series are intended for monitoring circuits with a rated voltage of 230 V, 400 V or
500 V and a rated frequency of 50 Hz up to 60 Hz.
Features
suitable for detecting type A and AC residual currents as well as pulsating DC residual currents at 50-60 Hz, connection for external
residual current transformer series DWP, residual response current can be adjusted at ve levels, response time smoothly adjustable
from 0 s to 1 s (except in the 0.03 A range), monitoring of the total current transformer and its connection line for interruption, test and
reset function through external key switches, three control/auxiliary voltages can be selected (230 V - 400 V - 500 V), selector switch
and potentiometer covered by top part of housing, compact design, high protection against foreign bodies and humidity, potential-free
changeover contact for controlling a disconnector, high immunity against surge currents,
Mounting
quick fastening to mounting rail, any installation position
Applications
The monitoring device is suitable for use in power supplied to purpose-built buildings and industrial facilities with TN-S, TN-C-S networks
and IT networks, such as in server rooms for data centres, laboratories, in the automotive industry and in conjunction with air conditioning
systems, printing machines and packaging machines, Not permitted for use in TN-C networks and direct current networks; not permitted
for monitoring systems in which electronic equipment may cause DC residual currents or residual currents with frequencies not equal to
50 Hz.
Notes
If residual currents with frequencies ≠ 50/60 Hz are expected (multiphase operated electronic equipment such as frequency converters),
correct display and indication of a 50/60 Hz residual current cannot be guaranteed. For these applications we recommend our AC/DC
sensitive residual current control relays from series DMRCD type B+.
Accessories
DWP 035, DWP 070, DWP 105, DWP 140
Technical Data
Series
Error memory existent
Short-time delayed
Residual operating current I∆n (settings)
Frequency range response residual current Type A
Frequency range response residual current Type AC
Adjustment values delay (textual)

2015_03_13

DRP
DRP
false
true
0.03 A, 0.1 A, 0.3 A, 0.5 A, 1 A
50 Hz ... 60 Hz
50 Hz
adjustable from 30 ms to 150 ms

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