Dual Zero Sequence Current and Voltage

Dual polarization is preferred where ground source impedance varies, or to provide redundant

polarization. Dual polarization is achieved using a polarizing signal that is the phasor sum of the current

and voltage polarizing signals.

OUTPUT CONTACTS

BE1-67N relays have the following output contacts: relay status alarm (relay fail), tripping, and auxiliary

(optional).

Relay Status Alarm

A relay status alarm output contact (relay fail) indicates that proper voltages are not being supplied to the

internal relay circuitry or that the microprocessor self-diagnostics has detected an error. This alarm output

contact is normally closed.

Tripping

Normally open or normally closed tripping contacts are included for each function within the relay.

Configuration of these contacts is defined by the relay style number. These output contacts are used with

optionally selected target indicator circuits.

Auxiliary

Normally open, normally closed, or single pole double throw (SPDT) auxiliary contact configurations are

provided to act in parallel with the tripping function(s) of the relay. Configuration of the auxiliary output

contacts are also defined by the relay style chart.

An auxiliary contact can be configured (via internal switches) to operate in parallel with any combination

of tripping outputs. Configurable auxiliary outputs permit use of the BE1-67N relay in various carrier

schemes.