ABB RELION REX640 - 9.7.5.1 Energizing check

Synchroni-
zaon
check and
control
CB_CLOSE
CB_OPEN
LADB
LALB
DALB
DADB
EXT_CHECK
CB_TEST
ISO_A1_CLOSE
ISO_A2_CLOSE
ISO_B1_CLOSE
ISO_B2_CLOSE
SYNC_INPRO
SYNC_OK
CL_FAIL_AL
CMD_FAIL_AL
MATCH_INPRO
MATCH_OK
CLOSE_CB
ASC1_NS_DAT
Energizing
check
U3P1
U3P2
CL_COMMAND
U_A_AB
U_B_BC
U_C_CA
BYPASS
BLOCK
U_A_AB
CB_SELECTED
NS_ASC_DAT
U_DIFF
FR_DIFF_MEAS
AS_INIT_FAIL
CL_FAIL_ALCL_FAIL_ALCL_FAIL_AL
Figure 870: Functional module diagram
This function can operate either with the U_AB or U_A voltages. The selection
of used voltages is defined with the VT connection of the line voltage general
parameters.
9.7.5.1 Energizing check
The Energizing check module checks the energizing direction. Energizing is the
situation where a dead network part is connected to an energized section of the
network. The Live dead mode setting is used to set the energized condition of the
bus section across the CB, that is, whether the bus section across the CB is live or
dead..
When the
Live dead mode setting parameter is set to "Command", then
then the energized condition (see Table 1529 ) of bus sections across the
CB can be set using the Live dead mode Ctl control command only. If the
Live dead mode setting parameter is not set to "Command", then the
Live dead mode setting parameter is used to set the energized condition
(see Table 1529 ) of the bus section across the CB.
1MRS759142 F Control functions
REX640
Technical Manual
1589