9146600990 Rev M
BE1-25A Testing
5-3
CAUTION
Before placing the Auto-Synchronizer into service, be sure that the LOCKOUT ON/OFF
register (6) is set to syste m requ irem ents . Wh en O FF , the Auto-S ync hron izer is fre e to
repe ated ly clos e the brea ker into a fault.
CAUTION
To test the BE1-25A Auto-Synchronizer requires that it be isolated from the system that
it controls. For a bench-test setup that would be appropriate before installation, see
Figure 5-1.
After installation , it is inconvenient to remove the many connections on the back of the
unit. For this reason, special provisions for testing have been incorporated that require
the following procedures of steps 1 through 5 .
WARNING!
Do
NOT
apply Test power to tip -plugs until the power tip-plugs are inserted into the test
module POWER jacks.
Step 6.
Step the display to the next register which is 5 (GENerator UnderVoltage). Enter and load 65, using
the previous procedures.
Step 7.
To cha nge the LOC KO UT con dition (i.e., from ON to OFF to ON, etc.): Select function 6 and raise
the LOAD sw itch for approximate ly two seconds. The display will toggle to the opposite condition
that it held. (Lon stands for lockout O N, Lof for loc kou t OF F.)
The setup procedure is complete. If you wish to place the relay into service, yo u ca n pa rk the display at a
parameter that you wish to monitor, such as ADVANCE ANGLE or BUS VOLTS.
VERIFICATION AND CALIBRATION
General
Th is paragraph is an introduction to the specific verifica tion and calibra tion pro cedures given later in this
section.
Equipment Required
•
Two dynamic frequency sources calibrated to 1.0% accuracy
•
One scope
•
One digital voltmeter
•
One counter
•
One stopwatch
•
One phase angle meter
Preliminary Instructions
The various v erification tests may be done independently. However, certain assumptions and blanket
instructions apply as given in the steps that follow.
Step 1.
To isolate the B E1-25A unit from the electrical environment, first loosen the 4 screws of the test
mo dule. The n pu ll the modu le com pletely out of the case .
Step 2.
Note that two sets of tracks have been provided for the tes t module. Carefu lly ente r the m odule into
the right-hand tracks (upper and lower), and gently pu sh th e module forward. (If a bind or
obstruction is felt, pu ll the module back slightly and check that it is properly entered into the right-
hand pair of tracks.) Figure 5-2 shows the module fully entered into the offset—or test mode—
position.
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