The ABB REF615E-D is a display panel used in conjunction with the REF615 relay, part of ABB's Relay Protection and series. 

This REF615E-D panel is primarily used for visual monitoring, control, and configuration of protective relays in electrical substations, typically within medium voltage distribution networks.

The REF615E-D display panel allows operators to interact with the relay, view system data, and make adjustments as needed for operational efficiency and protection purposes.

The REF615E-D panel allows users to interact with the relay’s protective functions, such as overcurrent protection, earth fault protection, and voltage monitoring. 

The REF615E-D is typically equipped with a graphic LCD display (typically monochrome or color) for visual representation of the system’s status and settings.

It REF615E-D often includes LED indicators for fault signals, protection status, and communication status.

Compatible with IEC 61850, Modbus, and potentially other industry-standard communication protocols for integration with substation systems.

Power supply for the REF615E-D display panel is typically 24V DC, which is standard in most relay protection systems.

REF615E-D the display panel operates within a temperature range of -20°C to +70°C.

The REF615E-D dimensions of the display panel are typically standard for 19” rack mounting.

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