13-20 BE1-951 Testing and Maintenance 9328900990 Rev L
Table 13-11. 50T/150T Time Delay Settings
Pickup and Time Delay Settings
2 Second TD 5 Second TD 10 Second TD
Purpose
S0-50TP=0.5,2S S0-50TP=0.5,5S S0-50TP=0.5,10S Sets 50TP TD.
S0-50TN=0.5,2S S0-50TN=0.5,5S S0-50TN=0.5,10S Sets 50TN TD.
Step 4: Step the applied A-phase current to .55 amps (for 1 amp CT circuit divide by 5). Measure the
time delay and verify the accuracy of the 50TP time delay setting, OUT1, and 50TN, OUT2.
Timing accuracy is ±5 percent or ±3 cycles of the time delay setting.
Step 5: Repeat Step 2 and 3 for the middle and higher time delay settings in
Table 13-11.
Step 6: (Optional.) Repeat Steps 3 through 5 for phase B (Terminals D3 and D4) and phase C
(Terminals D5 and D6).
Step 7: (Optional.) Repeat Steps 1 through 6 for the 150T elements. Overwrite the 50T commands
entered in Step 2 with the commands of
Table 13-12.
Table 13-12. 150T Time Delay Test Commands
Command Purpose
A= Gains write access.
SL-150T=1,0 Enables 150TP, disables blocking.
SL-VO1=150TPT Enables OUT1 to close for 150TP trip.
SL-VO2=150TNT Enables OUT2 to close for 150TN trip.
SG-TRIGGER=150TPT+150TNT,
150TPPU+150TNPU,0
Enable 150TPT or 150TNT to log and trigger fault recording.
EXIT;Y Exit and save settings.
Step 8: (Optional.) Repeat Steps 1 through 7 for the 50T and 150T elements in Setting Groups 1, 2, and
3. Before testing settings in other setting groups, a setting group must be selected using the
CS/CO-GROUP commands. To activate Setting Group 1, CS-GROUP=1 would be entered to
select Setting Group 1 and CO-GROUP=1 would be entered to make Setting Group 1 active.
Also, the pickup settings made in Step 3 (
Table 13-11) must be changed to specify the setting
group being tested. To test settings in Group 1, replace the 0 in the S0-x50 commands with a 1
(S1-x50).
50TQ/150TQ Pickup and Dropout Verification
Purpose: To verify the operation of the 50TQ and 150TQ elements.
Reference Commands: SL-50T/150T
Step 1: Connect a current source to Terminals D1 and D2 (A-phase).
Step 2: Prepare the 50TQ and 150TQ elements for testing by transmitting the commands in
Table 13-13 to the relay. Reset targets.
Table 13-13. 50TQ Pickup Test Commands
Command Purpose
A= Gains write access.
SL-N=NONE Zero out custom settings. Overwrite with LOGIC=NONE settings.
Y Confirm overwrite.
SL-N=Q50 Sets Q50 as custom logic name.
SL-50TQ=1,0 Enables 50TQ, disables blocking.
SL-VO1=50TQT Enables OUT1 to close for 50TQ trip.
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