Date Code 20100129 Instruction Manual SEL-751A Relay
Section 8
Front-Panel Operations
Overview
The SEL-751A Feeder Protection Relay front panel makes feeder data
collection and control quick and efficient. Use the front panel to analyze
operating information, view and change relay settings, and perform control
functions. The SEL-751A features a straightforward menu-driven control
structure presented on the front-panel liquid crystal display (LCD). Front-
panel targets and other LEDs give a clear indication of the SEL-751A
operation status. The features that help you operate the relay from the front
panel include the following:
➤ Reading metering
➤ Inspecting targets
➤ Accessing settings
➤ Controlling relay operations
➤ Viewing diagnostics
Front-Panel Layout
Figure 8.1 shows and identifies the following regions:
➤ Human-Machine Interface (HMI)
➤ {TARGET RESET} and navigation pushbuttons
➤ Operation and target LEDs
➤ Operator control pushbuttons and pushbutton LEDs
➤ EIA-232 Serial Port (PORT F). See Section 7: Communications
for details on the serial port.
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