9424200994 Rev N 521
Step 8: Slowly decrease the line voltage until the 25A Volt Diff digital point turns off. This should happen
at 58.89 V ±1 V. Record the result.
Step 9: Increase the voltage until the 25A Volt Diff digital point turns on (69.28 V). Record the result.
Step 10: (Optional) Repeat steps 2 through 9 for Settings Group 1, 2, and 3.
Slip Frequency Verification
Step 1: Use BESTCOMSPlus to monitor the status of 25A Slip Diff in Metering Explorer, Status, Digital
Points (1536-1567).
Step 2: Connect a balanced, three-phase voltage source of 69.28 Vpn, 60 Hz to BE1-11g terminals C13
(A-phase), C14 (B-phase), C15 (C-phase), and C16 (neutral). Apply a single-phase, 60-hertz
voltage of 69.28 Vpn, ∠0°, to terminals C17 (Vx-phase) and C18 (Vx-neutral). The 25A Slip Diff
digital point should light in BESTCOMSPlus.
Step 3: Slowly increase the frequency of the phase voltage source until the 25A Slip Diff turns off. This
should occur at 60.106 Hz ±0.01 Hz. Record the results.
Step 4: Decrease the frequency of the phase voltage source until the 25A Slip Diff turns on around
60.1 Hz ±0.01 Hz.
Step 5: Slowly decrease the frequency of the phase voltage source until the 25A Slip Diff turns off. This
should happen below 60.0008 Hz ±0.01 Hz since the Freq Source > Freq Destination setting is
enabled.
Step 6: (Optional.) Repeat Steps 2 through 5 for Settings Group 1, 2, and 3.
Voltage Source > Voltage Destination Verification
Step 1: Use BESTCOMSPlus to monitor the status of OUT6.
Step 2: Connect a balanced, three-phase voltage source of 69.28 Vpn, 60 Hz to BE1-11g terminals C13
(A-phase), C14 (B-phase), C15 (C-phase), and C16 (neutral). Apply a single-phase, 60-hertz
voltage of 69.28 ∠0° Vpn to terminals C17 (Vx-phase) and C18 (Vx-neutral). OUT6 should
close.
Step 3: Slowly increase the phase voltage source until OUT6 opens. This should occur at 69.63 V ±1 V.
Step 4: (Optional.) Repeat Steps 2 and 3 for Settings Group 1, 2, and 3.
Frequency Source > Frequency Destination Verification
Step 1: Use BESTCOMSPlus to monitor the status of OUT6.
Step 2: Connect a balanced, three-phase voltage source of 69.28 Vpn, 60 Hz to BE1-11g terminals C13
(A-phase), C14 (B-phase), C15 (C-phase), and C16 (neutral). Apply a single-phase, 60-hertz
voltage of 69.28 Vpn, ∠0°, to terminals C17 (Vx-phase) and C18 (Vx-neutral). OUT6 should be
open.
Step 3: Slowly increase the frequency of the phase voltage source until OUT6 closes. This should occur
at 60.0008 Hz.
Step 4: (Optional.) Repeat Steps 2 and 3 for Settings Group 1, 2, and 3.
Voltage Raise/Lower Proportional Output Verification
Step 1: Use BESTCOMSPlus to monitor the status of OUT4 (Lower) and OUT5 (Raise).
Step 2: Connect a balanced, three-phase voltage source of 69.28 Vpn, 60 Hz to BE1-11g terminals C13
(A-phase), C14 (B-phase), C15 (C-phase), and C16 (neutral). Apply a single-phase, 60-hertz
voltage of 69.28 Vpn, ∠0°, to terminals C17 (Vx-phase) and C18 (Vx-neutral). OUT4 and OUT5
should be open.
BE1-11g Synchronizer (25A) Test
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