modular residual current devices DMRCD 1 A
- Type A, 50 Hz ... 60 Hz, 230 V
- monitored circuit max. 690 V (AC)[TX:SX] (DC
- alarm message via relay
Details
modular residual current device Type A, 85 V - 264 V AC
MRCDs detect and evaluate residual currents in terms of its level and duration. If the limit value is exceeded, they trigger the disconnection of the affected system part via an external switch-off device. Modular residual current devices (MRCD) are used to protect against residual currents, if residual current circuit-breakers cannot be used due to the high load currents or mains voltages. These devices provide a quick overview of the system status. The current residual current is displayed by means of a bar graph indicator. The 10-segment LED display on the front of the device indicates when the response thresholds are exceeded. If alarm signaling is required, external signaling devices can be connected. The devices feature an adjustable response delay, which prevents unwanted signaling caused by short-term residual current impulses (e.g. due to thunderstorms or switching overvoltages). Optimal system integration is ensured by a wide range of compatible summation current transformers for different conductor cross-sections and corresponding rated currents. Modular protective devices with residual current characteristic A detect sinusoidal AC currents as well as pulsating DC residual currents. This variant is suitable for monitoring circuits with frequencies from 50 Hz to 60 Hz. They differ in adjustment ranges of the response residual current: the DMRCD 1 A allows adjustment of values .
suitable for detecting Type A residual currents, monitored frequency range 50 Hz to 60 Hz, Residual response current can be adjusted at five levels, Selectivity adjustable at ten levels, large selection of different residual current transformers available, Rated voltage of monitored circuit up to 690 V, with alarm relay, adjustable pre-alarm threshold of 10% to 90% of the alarm's response threshold, The set value for the pre-alarm threshold is displayed as a continuously lit LED on the bar display, potential-free changeover contacts for pre-alarm and main alarm, compact, robust plastic housing, easy mounting, according to EN 60947-2 Annex M, VDE 0100-410, IEC 670364-4-41, VDE 0100-530, EN 60664
quick fastening to mounting rail, any installation position
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 the rated frequency of the RCCB.
Residual currents are detected separately by external residual current transformers from series DCT, which are ordered separately. No more than one transformer can be operated on one evaluation unit. The maximum cable length from the control relay to the transformer is 10 m. To meet DIN VDE 0100-410, the electrical system must be isolated from the mains by an external isolating device with a response time of less than 15 ms.
modular residual current device Type A, 85 V - 264 V AC
MRCDs detect and evaluate residual currents in terms of its level and duration. If the limit value is exceeded, they trigger the disconnection of the affected system part via an external switch-off device. Modular residual current devices (MRCD) are used to protect against residual currents, if residual current circuit-breakers cannot be used due to the high load currents or mains voltages. These devices provide a quick overview of the system status. The current residual current is displayed by means of a bar graph indicator. The 10-segment LED display on the front of the device indicates when the response thresholds are exceeded. If alarm signaling is required, external signaling devices can be connected. The devices feature an adjustable response delay, which prevents unwanted signaling caused by short-term residual current impulses (e.g. due to thunderstorms or switching overvoltages). Optimal system integration is ensured by a wide range of compatible summation current transformers for different conductor cross-sections and corresponding rated currents. Modular protective devices with residual current characteristic A detect sinusoidal AC currents as well as pulsating DC residual currents. This variant is suitable for monitoring circuits with frequencies from 50 Hz to 60 Hz. They differ in adjustment ranges of the response residual current: the DMRCD 1 A allows adjustment of values .
suitable for detecting Type A residual currents, monitored frequency range 50 Hz to 60 Hz, Residual response current can be adjusted at five levels, Selectivity adjustable at ten levels, large selection of different residual current transformers available, Rated voltage of monitored circuit up to 690 V, with alarm relay, adjustable pre-alarm threshold of 10% to 90% of the alarm's response threshold, The set value for the pre-alarm threshold is displayed as a continuously lit LED on the bar display, potential-free changeover contacts for pre-alarm and main alarm, compact, robust plastic housing, easy mounting, according to EN 60947-2 Annex M, VDE 0100-410, IEC 670364-4-41, VDE 0100-530, EN 60664
quick fastening to mounting rail, any installation position
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 the rated frequency of the RCCB.
Residual currents are detected separately by external residual current transformers from series DCT, which are ordered separately. No more than one transformer can be operated on one evaluation unit. The maximum cable length from the control relay to the transformer is 10 m. To meet DIN VDE 0100-410, the electrical system must be isolated from the mains by an external isolating device with a response time of less than 15 ms.
