9365200990 Rev F
BE1-CDS240 Testing and Maintenance
13-51
Command Purpose
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=0,15,0,0,0,1
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 13-37, repeat Step 3 for the other values of unrestrained settings
indicated.
Table 13-37. 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.
Step 8:
(Optional.) Repeat for each pair of CT Inputs (CT1-CT3, CT1-CT4, CT2-CT3, CT2-CT4, and
CT3-CT4).
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.
Step 1:
Connect one current source to terminals A3, A4 (A-phase, Input 1) and a second current
source to terminals A9, A10 (A-phase, Input 2).
Step 2:
Send the commands listed in Table 13-38 to the relay to setup a test of the response time of
the 87 unrestrained elements.
Table 13-38. Unrestrained Element Response Time 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=DIFF
Sets DIFF as custom logic name.
SL-87=1,0 Enables
87.
SG-CT1=1,WYE,NA,0 Ctr
=
1, ct = wye, xfmr = n/a, no ground source.
SG-CT2=1,WYE,NA,0 Ctr
=
1, ct = wye, xfmr = n/a, no ground source.
SG-CT3=1,WYE,NA,0 Ctr
=
1, ct = wye, xfmr = n/a, no ground source.
SG-CT4=1,WYE,NA,0 Ctr
=
1, ct = wye, xfmr = n/a, no ground source.
SG-TRIGGER=87UT,87UT,0
Enable 87UT to log and trigger fault recording.
Summary of Contents for BE1-CDS240
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Page 292: ...ii BE1 CDS240 Human Machine Interface 9365200990 Rev F This page intentionally left blank ...
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Page 349: ...Figure 12 5 Horizontal Rack Mount Front View 9365200990 Rev F BE1 CDS240 Installation 12 5 ...
Page 361: ...Figure 12 17 Typical DC Connection Diagrams 9365200990 Rev F BE1 CDS240 Installation 12 17 ...
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Page 544: ...ii BE1 CDS240 Terminal Communication 9365200990 Rev F This page intentionally left blank ...
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