Basler Electric BE1-700 - Manual (Page 317)

Time Overcurrent (51) (BE1-700C)
Timing Verification
Purpose: To verify the timing operation of the 51 and 151 elements.
Reference Commands: SL-51PNQ/151P/151N, S<g>-51P/151P
Step 1: Prepare the 51 element for testing by transmitting the commands in Table 13-23 to the relay.
Table 13-23. 51P/51N/51Q Timing 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=PU51 Sets PU51 as custom logic name.
SL-51P=1,0 Enables 51P, disables blocking.
SL-51N=1,0 Enables 51N, disables blocking.
SL-51Q=1,0 Enables 51Q, disables blocking.
SL-VO1=51PT Enables OUT1 to close for 51P trip.
SL-VO2=51NT Enables OUT2 to close for 51N trip.
SL-VO3=51QT Enables OUT3 to close for 51Q trip.
SG-CT=1 Sets CT ratio at 1.
SG-
TRIG=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 2: Transmit the appropriate commands in Table 13-24 for your sensing input type.
Table 13-24. 51P/51N/51Q Time Delay Settings
Sensing Type Phase Commands Neutral Commands
Negative-Sequence
Commands
1 A S0-51P=0.1,0.5,I2,N S0-51N=0.1,0.5,I2,N S0-51Q=0.1,0.5,I2,N
5 A S0-51P=0.5,0.5,I2,N S0-51N=0.5,0.5,I2,N S0-51Q=0.5,0.5,I2,N
Step 3: Connect a current source to relay Terminals D1 and D2 (A-phase). Using the values listed in
Table 13-25 (table value x3 for 51Q), apply the appropriate current values, and measure the
time between the application of current and the closure of OUT1, OUT2, and OUT3. Verify that
the relay performs within the specified limits.
9376700990 Rev M BE1-700 Testing and Maintenance 13-21