Ground Connections; Control Circuit Connections - Toshiba HCV-6KALU Instruction Manual

Page 10

GROUND CONNECTIONS

The contactor must be grounded in accordance
with the requirements of the National Electrical
Code, Article 250 or applicable local standards.
Proper grounding
WARNING
connections must be made
to the contactor before
incoming power is applied.
The ground terminal is located on the right side
of the contactor as shown in Figure 3. To make
the ground connection,
fastening M8 hex head bolt and crimp-on ring
terminal (provided with the contactor) and crimp
the ring terminal to the end of the ground wire.
The ground wire should be 8 AWG or larger.
Then reattach the ring terminal using the same
bolt previously removed and torque to 9-11 ft-lb
(120-150 kgf-cm).

CONTROL CIRCUIT CONNECTIONS

Hazardous voltage. Turn off
WARNING
and lock out all primary and
control circuit power
sources prior to performing
this pre-energization check.
Applying the specified
power to the drive unit will
immediately activate the
coils and close the
contactor.
Control circuit wiring is connected to the
contactor by means of a drive unit (black plastic
box) located on the bottom frame (Figure 4).
Either AC or DC supply voltage may be
connected to the drive unit.
latched trip circuit uses DC as standard power.
When a latched contactor is operated using AC
power, it is recommended that a capacitor trip
device be used. The standard operating
voltage for the control circuit is as follows:
Normally energized type: 100-240V AC/DC
Latched type: 100-240V AC/DC closing voltage
Latched type: 125V DC tripping voltage
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first remove the
The optional
INSTALLATION
Figure 3 - Ground connection location
Figure 4 - Drive Unit location
Contactors utilizing the latch kit must follow
these guidelines:
1. The electrical trip-free circuit must be
remotely located with respect to the
contactor.
2. A stable DC power source such as a battery
is recommended for the control circuit. If
DC power is not available, use an AC
closing circuit and a capacitor trip.
3. The Auxiliary switch contact corresponding
to terminals 11 and 21 should be used for
the trip circuit and terminals 16 and 26 for
the control relay circuit (Figure 9).