Basler BE1-CDS220, Instruction Manual

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13-40 Testing And Maintenance BE1-CDS220
Table 13-25. Maximum Restraint Pickup Test Points (1 A Sensing Input)
Sensing Input 1 Input 2 Increasing Input 1 Decreasing Input 2
Input Minimum slope tap = 2.00 tap = 3.80 From Balance From Balance
Type Pickup (%) Bal. Input (A) PU Bal. Input (A) PU Pickup (A) Pickup (A)
1 0.35 15 0.40 1 0.76 1 0.54
±
0.025 0.49
±
0.025
1 0.35 15 2.00 5 3.80 5 2.32
±
0.093 3.27
±
0.131
1 0.35 30 0.40 1 0.76 1 0.54
±
0.025 0.49
±
0.025
1 0.35 30 2.00 5 3.80 5 2.71
±
0.108 2.81
±
0.112
1 0.35 45 0.40 1 0.76 1 0.63
±
0.025 0.481
±
0.025
1 0.35 45 2.00 5 3.80 5 3.16
±
0.126 2.406
±
0.096
1 0.35 60 0.40 1 0.76 1 0.74
±
0.030 0.408
±
0.025
1 0.35 60 2.00 5 3.80 5 3.71
±
0.148 2.046
±
0.082
Step 14. Repeat for all values and optionally, reconnect to phases B and C, inputs 1 and 2 when
advancing through the set of test values in the table. It is not necessary to test each phase at
all the values listed to verify the response of each phase. If your relay is supplied with the HMI
option, navigate to the \PROT\SGn\87\87 screen to make the listed slope setting changes.
Notice that the test values in Tables 13-24 and 13-25 are intended to show operation on both the minimum
operate and slope portion of the operating curve. These tables have values for testing the relay either by
increasing one current from a balanced condition or decreasing it. Either technique can be utilized to test
this function. Refer to the descriptions of both methods to evaluate the differences in the two approaches.
Step 15. Verify that pickup occurred within the specified accuracy of the relay. 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.
Step 16. Remove both currents.
Step 17. For each indicated change in slope value, send the commands listed in Table 13-26 to the
relay to invoke a change in slope settings (notice the leading comma (,) in the S#-87
command).
Table 13-26. Setup Commands
Command Purpose
A= Gain access
S#-87=,30 Minpu = no change, slope = 30%
E Exit
Y Save settings
Step 18. Repeat Steps 12, 13, and 14 for phases B and C unless all phases were tested during the
restraint testing in Steps 13 and 14. If so, proceed with the next step.
Step 19. (Optional) Repeat Steps 2 through 4 and 12 through 14 for setting groups 1 through 3 using
the CS/CO-GROUP command to change setting groups.
Restrained 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, see Sidebar 13-8.