BE1-951
Testing and Maintenance
13-39
Table 13-51. 27P, 59P Pickup and Time Delay Settings
Pickup and Time Delay Settings
Purpose
Undervoltage
Overvoltage
S0-27P=72,2s
S0-59P=156,2s
Sets 27P PU at 72 V, 59P at 156 V
Sets 27P TD, 59P TD at 2 seconds
S0-27P=,5s
S0-59P=,5s
Sets 27P TD, 59P TD at 5 seconds
S0-27P=,10s
S0-59P=,10s
Sets 27P TD, 59P TD at 10 seconds
Step 2
Prepare to monitor the 27P and 59P timings. Timing accuracy is verified by measuring the elapsed
time between a sensing voltage change and OUT1 closing.
Step 3 Connect and apply a 120 Vac, three-phase voltage source to terminals C13 (A-phase), C14
(B-phase), C15 (C-phase) and C16 (Neutral). Refer to Figure 13-1 for terminal locations.
Step 4 Step the A-phase voltage down to 68 volts. Measure the time delay and verify the accuracy of the
27P time delay setting. Timing accuracy is +5 percent or +3 cycles of the time delay setting.
Step 5 Step the A-phase voltage up to 165 volts. Measure the time delay and verify the accuracy of the
59P time delay setting. Timing accuracy is +5 percent or +3 cycles of the time delay setting.
Step 6 Repeat Steps 5 and 6 for the middle and upper time delay settings of Table 13-48.
Step 7 (Optional) Repeat Steps 2 through 6 for the B-phase and C-phase voltage inputs.
Step 8 (Optional) Repeat Steps 2 through 7 for setting groups 1, 2, and 3.
Negative Sequence Voltage Pickup Verification
Step 1 Prepare the 47 pickup function for testing by transmitting the commands in Table 13-52 to the
relay. Reset Targets.
Table 13-52. 47 Pickup Test Commands
Command
Purpose
A=
Gain write access
SL-N=NONE
Zero out custom logic settings.
Overwrite with logic=none settings.
Y
Confirm overwrite
SL-N=47
Sets 47 as custom logic name
SL-27P=0
Disables 27P
SL-59P=0
Disables 59P
SL-47=1,0
Enables 47, disables blocking
SP-60FL=ENA,PN
Removes 60FL block from 47 element
SL-VO1=47T
Enables OUT1 to close for 47 trip
SG-TRIG = 47T,47PU,
0
Enables 47 to log and trigger fault recording.
EXITY;Y
Exit and save settings
Step 2 Using Table 13-53 as a guide, transmit the first row of setting commands to the relay.
