ABB SACE Tmax XT2 User Manual page 74

Block functions From the service connector (with Ekip Connect) or with system bus communication, for some
protections it is possible to configure six blocks, useful for deactivating protection according to
programmable events:
Block name
BlockOnProgStatusA
BlockOnProgStatusB
BlockOnProgStatusC
BlockOnProgStatusD
BlockOnStartUp
BlockOnOutOfFrequency
Each block is independent and has its own activation command (Block On). In any case, each
protection can be configured with multiple block conditions (operation in OR logic).
The protections that have blocks are: S, I, G, MCR, S2, D, S(V), S2(V), UV, OV, VU, UV2, OV2,
UP, OP, RP, RQ, OQ, RV, UF, OF, UF2, OF2, ROCOF, UC, U, R Jam, R Stall.
Synchrocheck The Ekip Synchrocheck module recognizes and signals if there are synchronism conditions
between two independent voltage sources (e.g. generator + grid) for closing the interconnection
switch.
The descriptions of the module, the protection function and the performance are outlined in the
chapter dedicated to the modules (page 161).
1SDH002031A1002 ECN000092998
Description
Active block if the programmable status A is true
Active block if the programmable status B is true
Active block if the programmable status C is true
Active block if the programmable status D is true
Active block during StartUp time (if the StartUp for the specific
protection is available and activated)
Active block if the measured frequency is outside the range 30
Hz-80 Hz
IMPORTANT: blocks can cause:

Increase in trip times (max: + 30 ms), due to the verification of the event itself
(example: frequency control)

Unwanted deactivation of the protection if the block is associated with states
or module signals on the local bus and the auxiliary power supply is missing.
In this case it may be useful to program the event considering also the status
of the auxiliary power supply (Supply from Vaux).

Unwanted deactivation of the protection if the block is associated with
frequency measurements and the voltage is lower than the minimum
calculation threshold
IMPORTANT: if the function is activated, during startup the blocks are deactivated
(excluding BlockOnStartup, which works during this period)
Rev. B
SACE Tmax XT2 – XT4 | 74