ERL 8700/BUS, User Manual, Page: 84 / 166

6 Testing the B-PRO Functions
6-4 B-PRO User Manual 8700 D01908R02.12
Some Additional
Points to Consider
In all of the test cases, B-PRO can be set to trigger a transient fault record. Once
this is done, the fault record can be viewed, as can the point where the opera-
tion point crosses into the trip region. Also, any combination of injected cur-
rents can be performed to test all the functions of the relay. That is, the
differential function between HV and LV can be performed. A test using all 15
currents could be performed. This presumes that fifteen synchronized currents
are available. A verification of operate IO and restraint IR quantities is possible
through the TERMINAL MODE by selecting the OPERATING QUANTI-
TIES sub-menu. This screen indicates the current pu quantity relationship
within the relay.
Most protection functions also have pickup level outputs available. These can
be programmed to produce outputs by enabling them in the OUTPUT MA-
TRIX screens. These functions can be useful during testing, especially time de-
layed functions where the user is trying to determine where the function is
starting to pickup.
Figure 6.3: Operating Quantities
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