BE1-951
Testing and Maintenance
13-35
Step 6 (Optional) Repeat steps 4 through 6 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
S0-132=500,50ms,R
Sets 132 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.
Voltage Protection
Purpose: To verify the operating accuracy of the 24, 27P & X, 59P & X, and 47 protection elements.
Reference Commands: SL-24, SL-27P or (X), SL-59P or (X), SL-47, SL-VO, SL-GROUP, RG-STAT
Over Excitation, 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=
Gain 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.
EXITY;Y
Exit and save settings
