Date Code 990714
Introduction
1-5
SEL-2BFR, -2/BFR Instruction Manual
event report or can be calculated from the data stored. All event reports are time-tagged by a
self-contained clock/calendar.
The SEL-2BFR Relay is available in either a conventional terminal block or plug-in connector
model. The conventional terminal block relay has #6-32 screw terminals for ring lugs. The plug-
in connector model offers easy and fast connector installation and replacement through the use of
plug-in connectors. Inputs and outputs use Euro-style plugs. CT, PT, and power connectors
come with factory-crimped custom wiring harnesses. Shorting mechanisms within CT plugs
automatically short CT secondaries upon removal of the plugs from the relay.
High current interrupting contacts are standard on the SEL-2BFR plug-in connector model.
These contacts use an electromechanical relay with solid state circuitry to interrupt dc currents
far greater than that of a typical contact output. This circuitry employs no silicon-controlled
rectifiers (SCRs). The circuit is designed to make 30 Adc, carry 6 Adc, and interrupt 10 Adc.
The circuit can interrupt 10 Adc four times in one second. The circuit then must cool for two
minutes to prevent thermal damage.
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