5-10
BE1-25A Testing
9146600990 Rev M
Step 4.
Decrease the generator voltage towards 120 Vac and observe that the HIGH LED turns OFF.
Step 5.
Set the bus voltage to 120 Vac at 60.0 hertz, and the generator voltage to 120 Vac at 60.10 hertz.
Set the VOLTAG E DIFFERENC E control to 1.
Step 6.
Increase the ge nerator voltage until the HIG H LE D turns O N (appro ximately 121 Va c).
Step 7.
Decrease the generator voltage towards 120 Vac and observe that the HIGH LED turns OFF.
Step 8.
Set the simulated bus voltag e to the desired upper limit. Adjust th e U PP ER LIM IT control until the
HIG H LED just turn s O FF . The high lim it is now set.
Step 9.
Set the simulated bus voltage to the desired lower limit. Adjust the LO WER LIM IT control until the
LO W LED just turn s O FF . The low lim it is now set.
Step 10. Verify that the SY NC LED will n ot operate w henever the bus voltag e is above or below the UPPER
LIM IT or LOW ER L IMIT settings. A LIMIT H IGH L ED o r a LIM IT LOW LED will confirm that the bus
voltage is out of range.
Frequency Matching M odule F5 Verification Test
Step 1.
Provide the tes t se tup illustrated in Figure 5-2 , and m ove the test m odule into the offset (i.e., test)
position.
Step 2.
Establish a slip rate of 1 hertz using the following parameters for generator 1.
On MC U display, set the following parameters and load them into MCU mem ory.
•
Generator select (register 0) = 1.
•
Breaker time (register 1) = 0.200 second.
•
Correction pulse width (register 2) = 5.0 seconds.
•
Correction pulse interval (register 3) = 5.0 seconds.
•
Maximum slip (register 4) = 0.250 hertz.
•
Generator undervoltage (register 5) = 90 volts.
•
Lockout ON/OFF (register 6) = Lon.
On the test setup, set the following parameters.
•
Generator voltage = 120 Vac at 59 hertz.
•
Bus voltage = 120 Vac at 60 hertz.
•
GF > BF switch to OPEN.
•
52b contacts CLOSED.
•
Activate RESET switch.
Step 3.
Mea sure the correction pulse width by timing the ON time of the F5 module RAISE LED (time
should be approximately 5.0 seconds). Measure the correction pulse interval by timing the OFF
time of the F5 module RAISE LED (time should be approximately 5.0 seconds). Total time for ON
and OFF is approximately 10.0 seconds. Observe that the SLIP INH LED is ON.
Step 4.
Set the generator voltage = 120 Vac at 59.5 hertz.
Step 5.
M easure the correction pulse width by timing the ON time of the F5 module RAISE LED (tim e
should be approximately 2.5 seconds). Measure the correction pulse interval by timing the OFF
time of the F5 module RAISE LED (time s hould be app roximately 7.5 seco nds). Total time for ON
and OFF is approximately 10.0 seconds. Observe that the SLIP INH LED is ON.
Step 6.
Increase the generator frequency until the SLIP INH LED goes OUT (should be approximately
59.75 hertz). This should be the point at which synchronization is enabled.
Step 7.
Continue to increase the generator frequency until the SYNC LED flashes. Observe that the
generator frequency is greater than 59.75 hertz.
Step 8.
Increase the generator frequency to 60 hertz. Observe the SYNC AN GLE (register P) on the MCU
display. If the display indicates a negative angle, then raise pulses are issued. If the display
indica tes a positive angle, then lower pulses are issued. The pulse period (total time for ON and
OFF) should be approximately 10.0 seconds.
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