DRP pulsating AC/DC-sensitive type A
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Doepke The experts in residual current protection technology DATA SHEET DRP pulsating AC/DC-sensitive type A Article No. 09340110 ATk 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) 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

Doepke The experts in residual current protection technology Technical Data Adjustment values delay at IΔn ≥ 30 mA Rated voltage Un of circuit monitored Rated frequency fn of circuit monitored Current transformer external Operating voltage (AC) Operating frequency Rated impulse withstand voltage Description Specification Rated voltage (AC) Rated current (AC) Rated frequency Back-up fuse type Description Clamping area Tightening torque Description Description Duty cycle Operating noise Operating position max. Operating altitude above MSL Storage temperature Ambient temperature Housing type...

The experts in residual current protection technology