Features - Mitsubishi Electric MELPRO S Series Operation Manual

1. Features

Flexible and reliable protection functions
 Fine setting step of protection elements enables flexible use for various applications.
 16 kinds of operation time characteristics and wide setting range of time multiplier is available for
overcurrent protection element.
 Fault record function (10 records at a maximum) is provided for fault analysis.
 Modbus interface using RS-485 is provided for remote communication.
 Password-protected human-machine interface enables secured operation.
Highly Accurate Digital Computation
 The digital computation using high-speed sampling minimizes the effect of harmonics, etc., and provides
highly accurate protection.
Self-diagnosis
 The continuously monitoring of electronic circuits from input to output can detect internal failure before the
failure causes damage on the power system.
Compact size
 The compact relay designed for space-saving is suitable for replacement of existing ones.
Energy saving
 Low power consumption of the relay is effective in miniaturization of CT and VT as well as energy saving.
Fig. 1-1 Front view of MELPRO-S Series
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