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voltage of 69.28 Vpn, ∠0°, to terminals C17 (Vx-phase) and C18 (Vx-neutral). The 25A Slip Diff
digital point should be true.
Step 3: Slowly increase the frequency of the phase voltage source until the 25A Slip Diff digital point
turns off. This should occur at 60.506 Hz ±0.01 Hz. Record the results.
Step 4: Decrease the frequency of the phase voltage source until the 25A Slip Diff digital point turns on.
Step 5: Slowly decrease the frequency of the phase voltage source until the 25A Slip Diff digital point
turns off. This should happen at 59.494 Hz ±0.01 Hz.
Step 6: (Optional.) Repeat steps 2 through 5 for settings group 1, 2, and 3.
Breaker Close Angle Verification
Step 1: Use BESTCOMSPlus to monitor the status of OUT6 or the 25A Angle Diff digital point 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). OUT6 should
close and the 25A Angle Diff digital point should light.
Step 3: Slowly increase the angle of the phase voltage source until OUT6 opens or the 25A Angle Diff
digital point turns off. For phase A, this should occur at +20.1° ±1°. Record the result.
Step 4: Decrease the angle of the phase voltage source until OUT6 closes or the 25A Angle Diff turns
on.
Step 5: Slowly decrease the angle of the phase voltage source until the 25A Angle Diff turns off. For
phase A, this should occur at –20.1° ±1°. Record the result.
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 Vpn, ∠0°, to terminals C17 (Vx-phase) and C18 (Vx-neutral). OUT6 should
remain open.
Step 3: Slowly increase the phase voltage source until OUT6 closes. This should occur at 69.28 V +
(0.5% = 69.63 V) ±1 V.
Step 4: (Optional.) Repeat steps 2 and 3 for settings group 1, 2, and 3.
Voltage Raise/Lower Continuous 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.
Step 3: Slowly increase the phase voltage source until OUT4 closes continuously. This should occur
when the source differs from the ΔV setting by 1% (approximately 69.98 V ±1 V).
Step 4: Decrease the phase voltage source until OUT4 opens.
Step 5: Slowly decrease the phase voltage source until OUT5 closes. This should occur when the
source differs from the ΔV setting by 1% (approximately 68.58 V ±1 V).
Step 6: (Optional.) Repeat steps 2 through 5 for settings group 1, 2, and 3.
Synchronizer (25A) Test BE1-11g
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