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7.3.11
Stub protection STBPTOC
M14922-2 v7.1.1
Prepare the IED for verification of settings as outlined in section
.
Logical signals for STBPTOC protection are available on the local HMI underMain menu/Tests/
Function status/Current/STBPTOC(50STB)/STBPTOC:1/Inputs or Outputs
Values of the logical signals for STBPTOC are available on the local HMI under Main menu/
Tests/Function status/Current/STBPTOC(50STB,I>)/STBPTOC:1. The Signal Monitoring in
PCM600 shows the same signals that are available on the local HMI.
7.3.11.1
Measuring the operate limit of set values
M14922-6 v7
1.
Check that the input logical signals BLOCK and RELEASE and the output logical signal
TRIP are all logical zero.
2.
Activate the input RELEASE on the STBPTOC function block
3.
For a short while inject a current (fault current) in one phase to about 110% of the set
operating current, and switch the current off.
Observe to not exceed the maximum permitted overloading of the current circuits in the
IED.
4.
Switch the fault current on and measure the operating time of STBPTOC.
Use the TRIP signal from the configured binary output to stop the timer. The operation
should be instantaneously.
5.
Activate the input BLOCK on the STBPTOC function block.
6.
Switch on the fault current (110% of the setting).
No TRIP signal should appear.
7.
Switch off the fault current.
8.
For a short while inject a current (fault current) in same phase to about 90% of the set
operating current, and switch the current off.
9.
Switch the fault current on.
No TRIP signal should appear.
10. Switch off the fault current.
11.
Reset the RELEASE binary input.
12.
Switch the fault current on.
No TRIP signal should appear.
13. Switch the fault current off.
7.3.11.2
Completing the test
M14922-50 v4
Continue to test another function or end the testing by setting the parameter
TestMode to Off
under Main menu/Tests/IED test mode/TESTMODE:1. If another function is tested, then set
the parameter
Blocked to No under Main menu/Tests/Function test modes/Current/
STBPTOC(50STB,I>)/STBPTOC:1 for the function, or for each individual function in a chain, to
be tested next. Remember to set the parameter
Blocked to Yes, for each individual function
that has been tested.
7.3.12
Pole discordance protection CCRPLD
SEMOD55625-59 v5.1.1
Prepare the IED for verification of settings as outlined in section
.
Values of the logical signals for CCRPLD are available on the local HMI under Main menu/
Tests/Function status/Current/CCRPLD(52PD)/CCRPLD:X. The Signal Monitoring in PCM600
shows the same signals that are available on the local HMI.
1MRK 505 293-UEN B
Section 7
Testing functionality
Breaker protection REQ650
61
Commissioning manual
© Copyright 2013 ABB. All rights reserved
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