Voltage And Current Measurements - ABB RELION REX640 Technical Manual

1MRS759142 C
9.10.5.1
REX640
Technical Manual
RAISE_LOCAL
LOWER_LOCAL
CON_STATUS
PARALLEL
AUTO
MSTR_TRIGG
RSV
I_A
I_B
I3P
I_C
U_AB
U3P
TAP_POS
TR1_DAT
TR2_DAT
TR3_DAT
TR4_DAT
TR5_DAT
LTC_BLOCK
TCO
GUID-626BC289-8696-4960-A0D3-24C44C8FB00C V2 EN
Figure 811: Functional module diagram

Voltage and current measurements

The measured voltage must be a phase-to-phase voltage from the regulated side.
Typically, it is the phase-to-phase voltage U_AB from the secondary side of the power
Manual
voltage
regulation
Manual
Parallel
manual
Operation
mode
selection
Automatic
voltage
regulation
Auto
single
Auto
parallel
(Master)
Auto
parallel
(Follower)
Timer
Auto
parallel
t
(NRP)
Auto
t
parallel
(MCC)
Blocking
scheme
Section 9
Control functions
PARALLEL
AUTO
MASTER
FLLW1_CTL
FLLW2_CTL
FLLW3_CTL
FLLW4_CTL
FLLW5_CTL
PAR_FAIL
RAISE_OWN
Pulse
control LOWER_OWN
Alarm
ALARM
indication
TIMER_ON
BLKD_I_LOD
BLKD_U_UN
RNBK_U_OV
BLKD_I_CIR
BLKD_LTCBLK
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