13-34 BE1-951 Testing and Maintenance 9328900990 Rev L
Step 3: Apply 0 amp A-phase current at an angle of 0 degrees I lag E and slowly increase the current
until OUT1 closes. Decrease A-phase current until OUT1 just drops out. Pickup will occur within
±2 percent of the 32 pickup setting (500 watts = 5 amps, 100 volts, 0 degrees I lag E). Dropout
will occur at 93 to 97% of actual pickup. Verify 32 target on the HMI.
Step 4: With the relay picked up (OUT1 closed), change the angle of the applied current to 180 degrees
I lag E and verify that OUT1 opens. This verifies that the 32 function is operating in the forward
trip direction and not in the reverse direction.
Step 5: Repeat Steps 4 and 5 for the middle and upper settings in
Table 13-41.
Step 6: (Optional.) Repeat Steps 4 through 6 for B-phase and C-Phase currents.
Step 7: (Optional.) Repeat Steps 4 and 7 for Setting Groups 1, 2, and 3.
Reverse Tripping Direction
Step 1: Using
Table 13-42 as a guide, transmit the 32 setting commands to the relay. Prior to each test,
reset the relay targets (HMI screen) from the previous test.
Table 13-42. 32 Operational Settings
Operating Settings Purpose
S0-32=500,50ms,R Sets 32 to 500 watts, TD = 50ms, Reverse Trip Direction.
Step 2: Connect and apply a 100 Vac, three-phase voltage source at nominal frequency to Terminals
C13 (A-phase), C14 (B-phase), C15 (C-phase), and C16 (Neutral). Connect a variable ac
current source to Terminals D1 (A-phase polarity) and D2 (A-phase non-polarity). Refer to
Figure 13-1 for terminal locations.
Step 3: Apply 0 amp A-phase current at an angle of 180 degrees I lag E and slowly increase the current
until OUT1 closes. Decrease A-phase current until OUT1 just drops out. Pickup will occur within
±2 percent of the 32 pickup setting (500 watts = 5 amps, 100 volts, 180 degrees I lag E).
Dropout will occur at 93 to 97% of actual pickup. Verify 32 target on the HMI.
Step 4: With the relay picked up (OUT1 closed), change the angle of the applied current to 0 degrees I
lag E and verify that OUT1 opens. This verifies that the 32 function is operating in the reverse
trip direction and not in the forward direction.
Step 5: (Optional.) Repeat Steps 4 and 5 for B-phase and C-phase currents.
Volts per Hertz Overexcitation (24)
Purpose: To verify the operating accuracy of the 24 protection element.
Reference Commands: SL-24, SL-VO, SL-GROUP, and RG-STAT
Overexcitation, Volts/Hertz Trip, and Alarm Pickup Verification
Step 1: Prepare the 24 pickup function for testing by transmitting the commands in
Table 13-43 to the
relay. Reset targets.
Table 13-43. 24 Trip and Alarm Pickup Test Commands
Command Purpose
A= Gains write access.
SL-N=NONE Zero out custom logic settings. Overwrite with LOGIC=NONE settings.
Y Confirm overwrite.
SL-N=24 Sets 24 as custom logic name.
SG-VTP=1,4W,PN,PN Set VT phase voltage parameters.
SA-MAJ=31 Enables Major Alarm Light for 24 alarm.
SL-24=1,0 Enables 24, disables blocking.
SL-VO1=24T Enables OUT1 to close for 24 trip.
SG-TRIG=24T,24PU,0 Enables 24 to log and trigger fault recording.
EXIT;Y Exit and save settings.
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