General Information
1-2
Indicators
There are two indicators mounted on the front panel of the relay. The SYNC LED (present only in the
BE3-GPR P units with the sync-check option) indicates that the generator and bus inputs are within the
synchronization window set by the user. The liquid crystal display (LCD) is the main human-machine
interface and has capabilities to show any and all information necessary for programming and interpreting
relay actions.
Communications
Communication capability provides a remote serial interface between the relay and a computer. Basler
Electric offers a software package that enhances communications to BE3-GPRs. This software package
also provides a real time metering capability for monitoring generator voltage, frequency, current, watts,
power factor, and volt-amperes.
OUTPUTS
There are eleven isolated form C output contact arrangements. One for each of the nine protective
functions, the sync-check/dead bus function, and the watchdog timer.
SPECIFICATIONS
Timing Accuracy:
(All Functions Except 51V)
Accuracy is ±1% or ±50 milliseconds, whichever is greater.
27
Undervoltage
Trip point and reset set points are settable from 70 to 600 Vac in one volt
steps, and trip timing is adjustable from 0 to 20 seconds in one second
steps. Accuracy is ±2%. Repeatability is ±1.0 %.
59
Overvoltage
Trip point and reset set points are settable from 70 to 600 Vac in one volt
steps, and trip timing is adjustable from 0 to 20 seconds in one second
steps. Accuracy is ±2%. Repeatability is ±1.0 %.
81O
Overfrequency
Trip point and reset points are settable from 35 to 75 hertz in 0.1 hertz
steps. Trip timing is adjustable from 0 to 20 seconds in steps of one
second. Accuracy is ±0.025 Hz. Repeatability is ±0.01 Hz.
81U
Underfrequency
Trip point and reset points are settable from 35 to 75 hertz in 0.1 hertz
steps. Trip timing is adjustable from 0 to 20 seconds in one second
steps. Accuracy is ±0.025 Hz. There are two independent 81U functions
available. Repeatability is ±0.01 Hz.
32R
Reverse Power
Measures three-phase reverse power. Trip point and reset points are
settable from 50 to 999 watts in one watt steps. Trip timing is adjustable
from 0 to 20 seconds in one second steps. At power factors equal to or
greater than the absolute value of 0.5, and at 25
°
C, accuracy is ±2% or
±10W whichever is greater. At temperatures from -25 to 60
°
C, accuracy
is ±5% or ±10W whichever is greater. This function is available only in
the paralleled generator version. Repeatability is ±1.0 %.
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