ABB Network Partner AB
Breaker-failure protection
Version 1.0-00
1MRK 580 171-XEN
Page 5 - 90
The inputs and the outputs to and from the breaker-failure protection are
presented in the signal list.
Fixed values
Trip pulse, tp 150 ms, fixed
4Testing
The function can be disabled during the testing mode under these condi-
tions:
• When the function is selected to be blocked under the testing condi-
tions, select the functions, which should be blocked under the sub-
menu:
Test
BlockFunctions
• Set the Operation parameter to On (Operation=On) to set the termi-
nal in to testing mode. Select the operating mode under this sub-
menu:
Test
TestMode
Operation
• The terminal is switched to testing mode when the logical 1 is speci-
fied for the TEST-INPUT functional input.
Note: The function is blocked if the corresponding setting under the
BlockFunctions submenu remains On and the TEST-INPUT signal
remains active.
5
The breaker-failure protection can be tested, for example at commissioning
or after a changed configuration, in co-operation with some other func-
tions, and in particular with the protection and trip functions.
The trip circuits to the breakers are opened at a test switch or at connec-
tion terminals with links. A secondary injection relay test is used to oper-
ate the protection function.
Suggested testing procedure:
5.1 Preparations 1.1 Check the settings and the alternatives of the breaker-failure protec-
tion (BFP).
The operation can be set to Stand-by (Off).
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