13-34
Testing and Maintenance
BE1-951
Step 6
(Optional) Repeat Steps 1 through 5 for 150TN, 51N, and 151N. Setup commands in Table 13-34
and operational settings in Table 13-39 must me modified accordingly, i.e. all "50" entries would
change to "150" and so on.
Step 7
(Optional) Repeat Steps 1 through 5 for setting groups 1, 2, and 3.
Directional Power Protection (32)
Purpose: To verify the operating accuracy of the forward and reverse 32 function.
Reference Commands: SG-LINE, SL-32, S0-32, RG-STAT
Step 1 To prepare the 32 element for directional testing, transmit the commands in Table 13-40 to the
relay.
Table 13-40. 32 Directional 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=32
Sets custom logic name
SL-32=1,0
SL-VO1=32T
Enables 32 and disables blocking
Enables Out1 to close for 32 trip.
SG-TRIG=32T, 32PU, 0
Enable 32T to log and trigger fault recording
SG-VTP=1, 4W, PN, PN
Set VT phase voltage parameters
SG-CT=1
Sets P, N CT ratio at 1:1
EXIT;Y
Exit and save settings
Forward Tripping Direction
Step 1 Using Table 13-41 as a guide, transmit the 32 setting commands to the relay. Prior to each
directional test, reset the relay targets (HMI Screen) from the previous test.
Table 13-41. 32 Operational Settings
Operating Settings
Purpose
S0-32=500,50ms,F
Sets 32 to 500 watts, TD=50ms, Forward trip direction
S0-32=1000,50ms,F
Sets 32 to 1000 watts, TD=50ms, Forward trip direction
S0-32=2000,50ms,F
Sets 32 to 2000 watts, TD=50ms, Forward trip direction
Step 2 Connect and apply a 100 Vac, three-phase voltage source at nominal frequency to terminals C13
(A-phase), C14 (B-phase), C15 (C-phase) and C16 (Neutral). Connect a variable ac current source
to terminals D1 (A-phase polarity) and D2 (A-phase non-polarity). Refer to Figure 6-2 for terminal
locations.
Step 3
Apply 0 amp A-phase current at an angle of 0 degrees I lag E and slowly increase the current until
OUT1 closes. Decrease A-phase current until OUT1 just drops out. Pickup will occur 2
percent of the 32 pickup setting (500 watts = 5 amps, 100 volts, 0 degrees I lag E). Dropout will
occur at 93 to 97% of actual pickup. Verify 32 target on the HMI.
Step 4 With the relay picked up (OUT1 closed), change the angle of the applied current to 180 degrees
I lag E and verify that OUT1 opens. This verifies that the 32 function is operating in the forward trip
direction and not in the reverse direction.
Step 5 Repeat steps 4 and 5 for the middle and upper settings in Table 13-41.
Содержание BE1-951
Страница 157: ...BESTlogic Programmable Logic BE1 951 7 2 Figure 7 1 BESTlogic Function Blocks Courtesy of NationalSwitchgear com...
Страница 238: ...BE1 951 Human Machine Interface 10 5 Figure 10 5 Metering Menu Branch Structure Courtesy of NationalSwitchgear com...
Страница 239: ...10 6 Human Machine Interface BE1 951 Figure 10 6 Reports Menu Branch Structure Courtesy of NationalSwitchgear com...
Страница 270: ...12 2 Installation BE1 951 Figure 12 1 BE1 951 S1 Case Dimensions Courtesy of NationalSwitchgear com...
Страница 274: ...12 6 Installation BE1 951 Figure 12 5 BE1 951 H1 Case Dimensions Courtesy of NationalSwitchgear com...
Страница 283: ...BE1 951 Installation 12 15 Figure 12 16 Typical AC Connections Courtesy of NationalSwitchgear com...
Страница 394: ...A 18 Appendix BE1 951 Figure A 14 Time Characteristic Curve B Very Inverse 99 1376 Courtesy of NationalSwitchgear com...
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