FEATURES

BE3-GPR features include protection functions, contact inputs, internal

diagnostics, front panel indicators, and communication capabilities.

Protection Functions

BE3-GPR protection functions include:

• Overcurrent (51): style selectable as either three-phase or neutral

ground fault

• Phase balance (47)

• Loss of excitation (40)

• Sync-check (25)

• Overfrequency (81O)

• Underfrequency (two 81U elements)

• Reverse power (32R)

• Dead bus

Contact Inputs

Four continuously monitored contact inputs accept switch inputs or

jumpers and perform the following functions.

Trip Reset. Clears all tripped functions when auto reset is disabled.

Program Enable. Enables setting changes to be made at the front panel.

Failsafe Enable. Changes output contact operation to failsafe mode

(output relays are energized during

normal, non-tripped conditions).

Output Enable. Disables the output contacts. This feature prevents

nuisance tripping during generator buildup.