ABB RVC Instrucciones De Instalación Y De Funcionamiento página 6

# 6. Wiring diagram
k, I: leads of the current
transformer
L2, L3: 2 of the 3 phases
M1, M2: leads of the normally
open alarm contact
A: output relay common source
1-12: outputs
# 7. Leads connection
7.1. Push the lever of the
connector backwards with a
screwdriver.
SWITCHING STRATEGY
Reactive power requirement is calculated based on average reactive
load during a switching delay time (40 sec. recommended).
RVC decides on the number of steps based on above and switches
on the biggest step first to avoid intermediate switching. During this
switching sequence, a fixed 12-second delay time between each
step is introduced in order to avoid transient problems and to fulfill
EMC requirements. The default switching is circular (# 8.) which
increases lifetime of capacitors/contactors.
MODES
AUTO mode (default)
RVC decides on the number of steps required to reach the target PF
based on user setting (target PF, C/k, ...)
Display of cos ϕ, Vrms, Irms, THDV, THDI. (refer to 10.1)
MAN mode
This mode allows the user to control the power factor manually.
Display of cos ϕ, manual switching of steps. (refer to 10.2.)
7.2. Insert the wire in the
corresponding connection hole
while keeping the pressure on
the lever.
7.3. Release the screwdriver.
7.4. The wire
connected.
If the connections (CT and
voltage) are done properly, the
RVC will display
measurement screen, in the
Auto mode (refer to # 10.)
Note: wire size
6
is properly
the PF
2.5 mm²