Table 13-27. 51p/51n/51q pickup settings -23, Table 13-28. 51p/51n element accuracy -23, Table 13-29. 51q element accuracy -23 – Basler Electric BE1-700 User Manual
Page 319
Command
Purpose
SL-VO1=51PT
Enables OUT1 to close for 51PT trip.
SL-VO2=51NT
Enables OUT2 to close for 51NT trip.
SL-VO3=51QT
Enables OUT3 to close for 51QT trip.
SG-CT=1
Sets P, N CT ratio at 1:1
SG-TRIGGER=51PT+51NT+51QT,
51PPU+51NPU+51QPU,0
Enable 51PT, 51NT, or 51QT to log and trigger fault recording.
SG-TARG=51
Enables 51P, 51N, and 51Q targets.
EXIT;Y
Exit and save settings.
Step 3: Using Table 13-27 as a guide, transmit the first row of setting commands (minimum pickup
setting) for your sensing type.
Table 13-27. 51P/51N/51Q Pickup Settings
Sensing
Type
Pickup Settings
Purpose
Phase
Neutral
Neg.-Sequence
5 A
S0-51P=0.5,0,I2,N
S0-51N=0.5,0,I2,N
S0-51Q=0.5,0,I2,N
Sets 51PNQ PU at 0.5 A.
S0-51P=5.0,0,I2,N
S0-51N=5.0,0,I2,N
S0-51Q=5.0,0,I2,N
Sets 51PNQ PU at 5.0 A.
S0-51P=25,0,I2,N
S0-51N=25,0,I2,N
S0-51Q=25,0,I2,N
Sets 51PNQ PU at 25 A.
1 A
S0-51P=0.1,0,I2,N
S0-51N=0.1,0,I2,N
S0-51Q=0.1,0,I2,N
Sets 51PNQ PU at 0.1 A.
S0-51P=1.0,0,I2,N
S0-51N=1.0,0,I2,N
S0-51Q=1.0,0,I2,N
Sets 51PNQ PU at 1.0 A.
S0-51P=5.0,0,I2,N
S0-51N=5.0,0,I2,N
S0-51Q=5.0,0,I2,N
Sets 51PNQ PU at 5.0 A.
Step 4: Slowly increase the A-phase current until OUT1 (51P pickup indicator) closes. Verify that pickup
occurs within the specified accuracy listed in Table 13-28. Slowly decrease the applied current
until OUT1 opens. Dropout should occur at 93 to 97 percent of pickup. Verify 51A and 51N
targets on the HMI. Repeat Step 4 while monitoring OUT2 (51N). Verify the pickup and dropout
accuracy of the middle and upper pickup settings for your sensing type.
Table 13-28. 51P/51N Element Accuracy
Sensing Type
Pickup Accuracy
B (1 A)
±2% or ±10 mA
E or F (5 A)
±2% or ±50 mA
Step 5: Slowly increase the A-phase current until OUT3 (51Q pickup indicator) closes (3 x A-phase
value). Verify that pickup occurs within the specified accuracy listed in Table 13-29. Slowly
decrease the applied current until OUT3 opens. Dropout should occur at 93 to 97 percent of
pickup. Verify the 51Q target on the HMI. Verify the pickup accuracy of the middle and upper
pickup settings for your sensing type.
Table 13-29. 51Q Element Accuracy
Sensing Type
Pickup Accuracy
B (1 A)
±3% or ±15 mA
E or F (5 A)
±3% or ±75 mA
9376700990 Rev M
BE1-700 Testing and Maintenance
13-23