9328900990 Rev L BE1-951 Testing and Maintenance 13-23
Table 13-19. 50TN/150TN 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=50/150TN Sets 50/150TN as custom logic name.
SL-50TN=G,0 Enables 50TN, disables blocking.
SL-150TN=G,0 Enables 150TN, disables blocking.
SL-VO1=50TNT Enables OUT1 to close for 50TN trip.
SL-VO2=150TNT Enables OUT2 to close for 150TN trip.
SG-CT=1 Sets CT ratio at 1.
SG-TRIGGER=50TNT+50TNPU,
150TNT+150TNPU,0
Enable 50TNT and 150TNT to log and trigger fault recording.
EXIT;Y Exit and save settings.
Step 3: Using
Table 13-20, transmit the first row of setting commands for your sensing input type.
Table 13-20. 50TN/150TN Pickup Settings
Sensing
Type
Command Purpose
S0-50TN=0.1,0,N;S0-150TN=0.1,0,N
Sets 50TN and 150TN pickup at 0.1 A, TD = 0,
non-directional.
S0-50TN=1.0,0,N;S0-150TN=1.0,0,N
Sets 50TN and 150TN pickup at 1.0 A, TD = 0,
non-directional.
1 A
S0-50TN=5.0,0,N;S0-150TN=5.0,0,N
Sets 50TN and 150TN pickup at 5.0 A, TD = 0,
non-directional.
S0-50TN=0.5,0,N;S0-150TN=0.5,0,N
Sets 50TN and 150TN pickup at 0.5 A, TD = 0,
non-directional.
S0-50TN=5.0,0,N;S0-150TN=5.0,0,N
Sets 50TN and 150TN pickup at 5.0 A, TD = 0,
non-directional.
5 A
S0-50TN=10.0,0,N;S0-150TN=10.0,0,N
Sets 50TN and 150TN pickup at 10.0 A, TD = 0,
non-directional.
Step 4: Slowly increase the IG current until OUT1 closes. Verify that pickup occurs within the specified
accuracy listed in
Table 13-21. Slowly decrease the applied current until OUT1 opens. Dropout
should occur at 93 to 97 percent of pickup.
Step 5: Repeat Step 4 while monitoring OUT2 (150TN). Verify 50TG and 150TG targets on the HMI.
Verify the pickup accuracy of the middle and upper pickup settings.
Table 13-21. 50T/150T Element Accuracy
Sensing Type Pickup Accuracy
A or B (1 A)
±2% or ±10mA
D, E, or F (5 A)
±2% or ±50mA
Step 6: (Optional.) Repeat Steps 1 through 5 for the 50TN and 150TN elements in Setting Groups 1, 2,
and 3.
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