MRDT4 Transformer Differential Protection

Product detail

Product code:
MRDT4
Price
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Product Information

Download Area

Available options

Documentation (Brochures & Manuals)

Operating Software Smart view: Documentation & Setup

Application

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

MRDT4 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

KESCO

동일성 선언서 (Declaration of Identity)

  • Complies with IEEE 1547‑2003

  • Amended by IEEE 1547a‑2014

  • Complies with ANSI C37.90‑2005

Key Benefits of the HighPROTEC MRDT4

  • 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

  • Menu Languages supported: English, German, Spanish, Portuguese, French, Russian, Polish, Romanian


Application

  • Protection of power transformers (HV, MW, LV) against internal phase and ground faults as well as external faults.

Inputs and Outputs
Binary inputs 8 (16)
Current transformer inputs 8
Output relays 6 (12)
Watchdog relay 1
Protection ANSI
Time overcurrent protection 50/51
Inrush stabilisation (2nd harmonic)
Earth fault protection 50N/51N
Sensitive EF isolated/compensated 50Ns/51Ns (Option)
Resistance earthed / solidly earthed 50N/51N
Thermal replica 49
Circuit breaker failure protection 50BF
Negative sequence protection 46
Differential protection: Transformer 87T
Differential protection: Generator 87G
Differential protection: Restricted earth fault 87N
Supervision ANSI
Current transformer supervision 60L
Trip circuit resp. control circuit supervision 74TC
Additional Features
Control and detection of switchgears
Control and supervision of a circuit breaker
Disturbance recorder
Event recorder
Fault recorder (none volatile)
Parameter sets 4
Programmable Logic
Communication
DNP3 RTU (Option)
DNP3 TCP (Option)
IEC 60870-5-103 (Option)
IEC 60870-5-104 (Option)
IEC 61850 (Option)
IRIG-B00X
Modbus (TCP) (Option)
Modbus RTU (Option)
Profibus DP (Option)
Mounting Type
Housing suitable for 19” rack mounting (Option)
Housing suitable for door mounting

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