# Woodward HighProTec MRDT4 Transformer Differential Relay

> transformer-protection - Transformer differential protection, restricted earth fault (REF), thermal overload and overfluxing for industrial distribution and generation plants

**Voltformer canonical:** https://voltformer.com/product/woodward-highprotec-mrdt4-transformer-differential-relay - markdown version: https://voltformer.com/product/woodward-highprotec-mrdt4-transformer-differential-relay.md

## Overview

- **Brand:** Woodward
- **Product family:** HighProTec Series
- **Application:** Transformer differential protection, restricted earth fault (REF), thermal overload and overfluxing for industrial distribution and generation plants
- **Product type:** transformer-protection

## Protection & Control Functions

- **ANSI Functions:** 87T, REF/87N, 49, 50/51, 50N/51N, 24, 50BF
- **Transformer Windings:** 2
- **Supports Transformer:** Yes
- **Supports Feeder:** No
- **Supports Breaker Control:** Yes
- **Arc Flash Protection:** No

## Digital Integration & Protocols

- **IEC 61850 Edition:** Ed2
- **GOOSE:** Yes
- **Sampled Values (SV):** No
- **Redundancy (PRP/HSR):** Yes (PRP/HSR)
- **Protocols:** IEC 61850, Modbus TCP, Profibus DP, DNP3
- **Engineering Software:** Smart view

## Electrical Interface

- **Frequency:** 50/60 Hz
- **Nominal Current:** 1 A / 5 A
- **Auxiliary Supply:** 24-270 Vdc / 48-230 Vac
- **Operating Temperature:** -20 to +70 °C

## Standards

- IEC 60255
- IEEE C37.90
- CE

## Sources

- https://www.woodward.com/products/product-line/highprotec/

- **Source scope:** manufacturer-family
- **Last reviewed:** 2026-09-13

Manufacturer portfolio/family source. Confirm the exact order code, guaranteed ratings and project-specific options against the current OEM datasheet before procurement or an SLD study.

Technical ratings are configuration-dependent where stated by the manufacturer. Request project-specific verification before procurement.