1-3
(4) The correction signals are proportional to the magnitude of the sensed voltage difference
only for summing point outputs. The signals are output until the conditions for breaker closure are
satisfied. For output contacts, the contacts are closed until the conditions for acceptable breaker
closure are attained.
e. Dead Bus Closing Option. Upon detection of a dead bus condition, and when the generator
output voltage is above the minimum voltage level, the Synchronizer will automatically close the
breaker. The maximum allowable dead bus voltage is adjustable from 10 V to 50 V (at the 120 V
tap) by a front panel accessible potentiometer. This option can be disabled by the removal of a
terminal strip mounted jumper. For this option to function, input power must be from the generator or
from an external source other than the bus.
Refer to Table 1-1 for the physical specifications and to Table 1-2 for the electrical specifications.
Table 1-1. Physical Specifications.
Storage Temperature:
-85
°
F (-65
°
C) to +185
°
F (+85
°
C)
Operating Temprature:
-40
°
F (-40
°
C) to +158
°
F (+70
°
C)
Shock:
Withstands up to 15 G's in any of three mutually perpendicular
axes.
Vibration:
Withstands the following:
5 to 18 Hz at 0.06 inch double amplitude
18 to 30 Hz at 1 G
30 to 48 Hz at 0.02 inch double amplitude
48 to 70 Hz at 2.5 G's
Weight:
4 lbs. (1.82 kg)
NOTE
If the voltage regulator is not properly adjusted, the BE3-25A output
may not be able to drive the regulator far enough to allow synchroni-
zation.
1-2. SPECIFICATIONS
