MRDT4 Transformer Differential Protection (MRDT4-2A0AAA)
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Configuration
The various protective functions of the MRDT4 are specifically tailored to the protection
of two winding transformers. The device offers in addition to the differential protection
various communication and backup protection functions.
Furthermore the MRDT4 can also be used as a cost-optimized generator differential protection device, where it is even possible to have a step-up transformer integrated into the protection zone.
The protection functions of the MRDT4 have been adapted to comply with the requirements of the VDE-AR-N-4110:2018.
Functional Overview
Approvals
 | |
 | UL File Nr.: E217753 certified regarding UL508 (Industrial Controls) |
 | CSA File Nr.: 251990 certified regarding CSA-C22.2 No. 14 (Industrial Controls) |
 | EAC certified by EAC (Eurasian Conformity) |
 | KEMA Type tested (and certified) regarding IEC 60255‑1 and regarding IEC 61850 |
Complies with IEEE 1547‑2003
Amended by IEEE 1547a‑2014
Complies with ANSI C37.90‑2005
Wide range power supply: 24 … 270 VDC / 48 … 230 VAC
CT measurement always with 1 A and 5 A
Plausibility verification intelligence
Optimized functional overview by hiding unused functions, parameter and assignments
On-board testing without removing the wiring
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Protection of power transformers (HV, MW, LV) against internal phase and ground faults as well as external faults.