The MDP is a digital non-directional overcurrent relay that protects against three phase and ground faults. Time overcurrent relays are used for the protection of feeders, transmission lines, alternating current machines, and for many other applications where accurate measurement of current and timing are necessary. The MDP relays have control inputs and outputs that can be used for a zone interlocking scheme. Remote control and monitoring of the breaker enables control room breaker operation.

• Protection of feeders, transmission lines, alternating current machines

• Phase and ground time overcurrent
• Instantaneous overcurrent
• Four user selectable TOC curves
• Four values of definite time protection
• Four output relay contacts
• Three external inputs

• Current measured every millisecond
• Built in self test with alarm
• Event data

• Eight LEDs on the front of the relay
• Seven segment display with scrolling
• Modular communications card
• RS23