9328900990 Rev L BE1-951 Testing and Maintenance 13-21
Command Purpose
SG-CT=1 Sets CT ratio at 1.
SG-TRIGGER=50TQT,50TQPU,0 Enable 50TQT to log and trigger fault recording.
EXIT;Y Exit and save settings.
Step 3: Using
Table 13-14, transmit the first row of setting commands for your sensing input type.
Table 13-14. 50TQ Pickup Settings
Sensing Type Command Purpose
S0-50TQ=0.1,0,N Sets 50TQ pickup at 0.1 A, TD = 0, non-directional.
S0-50TQ=1.0,0,N Sets 50TQ pickup at 1.0 A, TD = 0, non-directional.
1 A
S0-50TQ=5.0,0,N Sets 50TQ pickup at 5.0 A, TD = 0, non-directional.
S0-50TQ=0.5,0,N Sets 50TQ pickup at 0.5 A, TD = 0, non-directional.
S0-50TQ=5.0,0,N Sets 50TQ pickup at 0.5 A, TD = 0, non-directional.
5 A
S0-50TQ=10.0,0,N Sets 50TQ pickup at 10.0 A, TD = 0, non-directional.
For a single-phase input test, I
2
= Ia/3. Therefore, the relay should pick up at a value of three times the
setting value when applying only a single-phase input. For example, to determine the pickup current value
required for a 1 A relay with a pickup setting of 0.1, it would require 0.1 times 3 or 0.3 amperes of input
current.
Step 4: Slowly ramp up A-phase current until OUT1 closes. Verify that pickup occurred within the
specified accuracy of the relay (5 A sensing: ±3 percent or ±75 mA, 1 A sensing: ±3 percent or
±15 mA).
Table 13-15 provides the upper and lower limits for the specified tests.
Table 13-15. 50TQ/150TQ Pickup Values
Sensing Type Pickup Setting Lower Limit Upper Limit
S0-50TQ=0.1,0 0.225 A 0.375 A
S0-50TQ=1.0,0 2.91 A 3.09 A
1 A
S0-50TQ=5.0,0 14.55 A 15.45 A
S0-50TQ=0.5,0 1.425 A 1.575 A
S0-50TQ=5.0,0 14.55 A 15.45 A
5 A
S0-50TQ=10.0,0 29.1 A 30.1 A
Step 5: After pickup occurs, slowly ramp the current down until OUT1 opens. Verify that dropout
occurred as specified (95 percent, ±2 percent). Verify 50TQ target on the HMI.
Step 6: Repeat Steps 3, 4 and 5, applying all
Table 13-15 values that apply to your sensing input type.
Step 7: (Optional.) Repeat Steps 3 through 6 for phase B (Terminals D3 and D4) and phase C
(Terminals D5 and D6).
Step 8: (Optional.) Repeat Steps 1 through 7 for the 150TQ elements. Use
Table 13-16 as a reference
when substituting the commands used in Step 1.
Table 13-16. 150TQ Pickup Test Commands
Replace These Commands With These Commands
SL-50TQ=1,0 SL-150TQ=1,0
SL-VO1=50TQT SL-VO1=150TQT
SG-TRIG=50TQT,50TQPU,0 SG-TRIG=150TQT,150TQPU,0
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