23
Connect the RJ45 connector to the specific input in the control
system as shown below:
Figure 19. Example of a metal duct to shield the
synchronization LV cable from the MV supply
Figure 20. RJ45 input for synchronization
6.7 Voltage Sensor Connections
The HV input of the voltage sensor must be connected to
phase R on the input side of capacitor switch (upper terminals
of poles), because it must detect the AC voltage when the ca-
pacitor switch is both Open and Closed.
Make sure you make a good GND connection by fixing the sen-
sor by the four holes in the base of the unit to an electrically
grounded metallic surface.
The Low Voltage output will be connected to the master unit of
ACU by means of an 8-pole RJ 45 connector.
Terminals 7 and 8 are the pins used:
7 = Active pole
8 = Return (GND)
Figure 21. Pin-out of the Keva sensor connector
Insert, into XK2, the RJ connector from the voltage divider
used for synchronization purposes.
Use the screw marked with the relative
symbol to earth the fixed version of the
apparatus.
Clean and degrease an area about 30 mm
in diameter all around. Cover the entire
joint with vaseline after completing the
assembly.
Use a conductor (bus bar or braid) with the
cross-section indicated by the Standards
in force.
6.8 Earthing
6.9 Auxiliary circuit connection
The minimum cross-section of the wires used for the auxiliary
circuits must not be less than that used for the internal wiring.
Fixed capacitor-switch terminal board connection
The auxiliary circuits of the capacitor-switch must be connect-
ed via the terminal board connection on the capacitor-switch
structure.
Outside the capacitor-switch, the wires must routed inside ap-
propriately earthed metal tubes or ducts.
The wires for the commands, signals, statuses and alarms
must be connected to the terminal boards as shown in the
circuit diagram.
Connect the two power supply wires to the corresponding ter-
minals on terminal boards 1 (+) and 2 (-).
Connect the green/yellow wire for the ground connection to
terminal 7.
Figure 22. Terminal board
Refer to the terminal block of the auxiliary control circuit en-
closed at the end of this document for all the electrical connec-
tions (see ANNEX A).
Provided
by
Northeast
Power
Systems,
Inc.
(NEPSI)
