Protection Relays MELPRO-D Series

Product Features

It is digital protection relays for high/extra-high-voltage power distribution.
MELPRO-D series provides high performance and abundant lineup.

The MELPRO-D series relay is suitable for feeder protection, motor protection and transformer protection applications.
Easily configurable, the relay offers multiple step time grading for over-current protection co-ordination.
Two settings groups offer flexibility for testing purposes or the ability to accommodate different load conditions.
Remote communications options include IEC 61850 ethernet communications or Modbus (RS485).
IEC 61850 communications can be achieved using 2 optical ports.
If 2 optical ports are used, HSR (High-availability Seamless Redundancy) or PRP (Parallel Redundancy Protocol) can be selected through the user interface.
Up to 5 disturbance recorder fault records can be stored (24 samples/cycle). These fault records can be analysed using PC Tool software.
Circuit breakers can be controlled via the HMI or remotely.

VFD (Vacuum Florescent Display) adopted for better visibility than LCD.
Relay Software tool enables simple relays setting changes, status indications, CB control, sequence of events (SOE) and data digital fault recorder (DFR) data acquisition.
PLC (Programmable logic Control) functionality enables easy customisation of logic for user.

Self-diagnosis function monitors the main hardware and issues alarm for failure.
2 out of 3 relay configuration (option) can keep continuous protection even if one relay fails.

Panel cutout size is the same as the existing version of MELPRO-D so easy to replace.

IEC60255- series for EMC and protection functional elements.