Basler BE1-CDS220, Instruction Manual

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BE1-CDS220 Testing And Maintenance 13-31
Table 13-16. Minimum Pickup Accuracy Limits
Sensing
Type
Phase
Inputs
Terminals MINPU Tap 1/Tap
2 values
Pickup
(A)
Low
Limit (A)
High
Limit (A)
5 A A1 B1,B2 0.10 5.00/5.00 0.50 0.425 0.575
B1 B3,B4 0.50 5.00/5.00 2.50 2.400 2.600
C1 B5,B6 1.00 5.00/5.00 5.00 4.800 5.200
A2 B9,B10 0.10 5.00/10.0 1.00 0.925 1.075
B2 B11,B12 0.50 5.00/10.0 5.00 4.800 5.200
C2 BB13,B14 1.00 5.00/10.0 10.0 9.600 10.40
1 A A1 B1,B2 0.10 1.00/1.00 0.10 0.075 0.125
B1 B3,B4 0.50 1.00/1.00 0.50 0.475 0.525
C1 B5,B6 1.00 1.00/1.00 1.00 0.960 1.040
A2 B9,B10 0.10 1.00/2.00 0.20 0.175 0.225
B2 B11,B12 0.50 1.00/2.00 1.00 0.960 1.040
C2 BB13,B14 1.00 1.00/2.00 2.00 1.952 2.080
Step 7. Repeat Steps 3 and 4 by connecting the current sources to the phases indicated in Table 13-
16 and substitute for MINPU (in the S#-87 command) and TAP values in the S#-TAP87
command (or if your relay is supplied with the HMI option, navigate to the \PROT\SGn\87\87
screen to change MINPU values and \PROT\SGn\87\TAP screen to change TAP 1 and TAP 2
values) to verify linearity over the range of MINPU values.
Step 8. (Optional) Confirm that the relay acknowledged each change of state of OUT1 (87 restrained
trip) by using the RS command. Gain write access to the relay (a=) and reset the new events
counter by sending an RS=0 command to the relay.
NOTE
The action listed in Step 8 will not be introduced again in these tests. It is up to the user to
decide whether it is necessary to do this check after each test.
Step 9. (Optional) Repeat Steps 2 through 8 for setting groups 1 through 3. Use the CS/CO-GROUP
command to change setting groups.
Restrained Pickup
The following tests verify the functional operation of the restrained 87 element. See Sidebar 13-2 for more
information on the percentage differential restraint operating principle.
Purpose: To verify the accuracy of the restraint operation of the 87 element.
Reference Commands: SL-87, SL- VO, SG-CT, S<g>-87, S<g>-TAP87
Step 1. Connect one current source to terminals B1 and B2 (A-phase, input 1) and a second current
source to terminals B9 and B10 (A-phase, input 2). Ensure that the two current sources are
180
o
out of phase. See Figure 13-13 for a connection diagram.
An ohm-meter or continuity tester may be used to monitor output contact status.
Step 2. Send the commands listed in Table 13-17 to the relay to prepare the 87 elements for pickup
testing.