13-40
Testing and Maintenance
BE1-951
Table 13-53. 47 Pickup Settings
Pickup Settings
(Negative Sequence Voltage)
Purpose
S0-47=24, 50ms
Sets 47 PU at 24 V, time delay at minimum
S0-47=30, 50ms
Sets 47 PU at 30 V, time delay at minimum
S0-47=36, 50ms
Sets 47 PU at 36 V, time delay at minimum
Step 3 Prepare to monitor 47 function operation. Operation can be verified by monitoring OUT1.
Step 4 Connect and apply a 50 Vac, single-phase voltage source to terminals C13 (A-phase), and C16
(Neutral). Refer to Figure 13-1 for terminal locations.
Step 5 Negative sequence voltage is 1/3 the phase voltage, therefore for a V2 setting of 24 volts, the
applied phase voltage will be 24 x 3 or 72 volts. Slowly increase the A-phase voltage until OUT1
closes. Pickup should occur 2 percent or 1 volt of the pickup setting. Slowly
decrease the A-phase voltage until OUT1 opens. Dropout should occur between 97 and 98 percent
of the actual pickup value. Verify the 47 target on the HMI.
Step 6 Verify the pickup and dropout accuracy of the middle and upper 47 pickup settings.
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 Timing Verification
Step 1 Using Table 13-54 as a guide, transmit the first row of setting commands to the relay.
Table 13-54. 47 Pickup and Time Delay Settings
Pickup and Time
Delay Settings
Purpose
S0-47=36,2S
Sets 47 PU at 36 V, 47 TD at 2 seconds
S0-47=,5S
Sets 47 TD at 5 seconds
S0-47=,10S
Sets 47 TD at 10 seconds
Step 2 Prepare to monitor the 47 timings. Timing accuracy is verified by measuring the elapsed time
between a sensing voltage change and OUT1 closing.
Step 3 Connect and apply a 100 Vac, single-phase voltage source to terminals C13 (A-phase), and C16
(Neutral). Refer to Figure 13-3 for terminal locations.
Step 4 Step the A-phase voltage up to 115 volts. Measure the time delay and verify the accuracy of the
47-time delay setting. Timing accuracy is +5 percent or +3 cycles of the time delay setting.
Step 5 Repeat Step 5 for the middle and upper time delay settings of Table 13-51.
Step 6 (Optional) Repeat Steps 2 through 5 for the B-phase and C-phase voltage inputs.
Step 7 (Optional) Repeat Steps 2 through 6 for setting groups 1, 2, and 3.
Auxiliary Undervoltage and Overvoltage Pickup Verification (3E0 VT Input)
Step 1 Prepare the 27X and 59X/159X pickup function for testing by transmitting the commands in Table
13-55 to the relay. Reset targets.
Table 13-55. 27X and 59X/159X Pickup Test Commands
Command
Purpose
A=
Gain write access
SL-N=NONE
Zero out custom logic settings. Overwrite with
logic=none settings.
