Basler BE1-CDS220, Instruction Manual

Page: 359 / 476

BE1-CDS220 Testing And Maintenance 13-45
Step 1. Connect one current source to terminals B1, B2 (A-phase, input 1). Refer to Figure 13-1.
An ohm-meter or continuity tester may be used to monitor output contact status.
Step 2. Send the commands listed in Table 13-31 to the relay to setup a test of the pickup of the 87
elements.
Table 13-31. 87 Elements Pickup Setup Commands
Command Purpose
A= Gain access
SL-N=NONE Zero out custom logic settings/overwrite with logic =
none settings
Y Confirm overwrite
SL-N=UDIFF Name custom logic for this test
SL-87=1,0 Enables 87
SL-VO1=87UT Enables OUT1 to close with 87 unrestrained trip
SL-VO2=5THHAR Enables OUT2 to close when 5
th
harmonic restrains
87RT
SG-CT1=1,WYE,NA,0 ctr=1, ct=wye, xfmr=na, no grd source
SG-CT2=1,WYE,NA,0 ctr=1, ct=wye, xfmr=na, no grd source
SG-TRIGGER=87UT,87UT,0 Enable 87UT to log and trigger fault recording
S#-TAP87=MANUAL,2.00,3.80 set tap 1=2.00 and tap 2=3.80
S#-87=0,15,0,0,1,1 Minpu = disabled, slope = 15%, 2
nd
= disabled, 5
th
=
disabled, URO = disabled, 2
nd
harm sharing = shared
E Exit
Y Save settings
Step 3. Apply current to A-phase input 1, increasing the magnitude until OUT1 closes. Since the URO
setting is 1 and Tap 1= 2, this should occur at 2 amperes. Accuracy when increasing or
decreasing the input current is
±
4% of setting or 75 milliamperes (whichever is larger) for 5
ampere sensing inputs and
±
4% of setting or 25 milliamperes (whichever is larger) for 1
ampere sensing inputs. Verify that pickup occurred within the specified accuracy of the relay.
Step 4. Reduce the input current until OUT1 opens.
Step 5. Using the values in Table 13-32, repeat Step 3 for the other values of unrestrained settings
indicated.
Table 13-32. Unrestrained Pickup Accuracy Limits
URO Setting Tap 1 Pickup (A) Low Limit (A) High Limit (A)
1 2.00 2 1.925 2.075
5 2.00 10 9.700 10.30
10 2.00 20 19.40 20.60
Step 6. (Optional) Repeat steps 1 through 5 for phases B and C.
Step 7. (Optional) Repeat Steps 2 through 6 for setting groups 1 through 3 using the CS/CO-GROUP
command to change setting groups.
Unrestrained Time Verification
A timing circuit or a contact monitor with timing algorithm must be used to time the output contact status
change. For more information on determining the minimum pickup current, refer to Sidebar 13-8.