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INSTALLATION
MOUNTING THE CONTACTOR
The contactor is designed to mount to a flat,
grounded metal, vertical surface. If there are
any noticeable gaps between the contactor and
the mounting surface, fill them in using flat
washers as spacers.
Fasten the contactor using four (4) M8 hex
head bolts. The tightening torque should be
120-150 kgf-cm (9-11 ft-lb). See
Table 1 for tightening torque specifications.
MAIN CIRCUIT CABLE CONNECTIONS
Route cables that connect to the contactor to
avoid interference with sharp edges and moving
parts. Observe minimum bending radius for the
type of cable used.
Power cables should be braced and/or laced to
withstand short-circuit forces wherever such
cables are unsupported. Power cables should
be adequately sized to carry the maximum
continuous current in accordance with NEC
requirements and should have an adequate
voltage rating. Cables should be dressed and
terminated as appropriate to the voltage class
and cable manufacturer's recommendations.
Fasten the cables to the main circuit terminals.
Use 35 mm Class 8.8 M8 or M10 hex head
bolts, 2 flat washers, a lock washer and a nut.
While securely preventing the nut from rotating
with a wrench, torque the bolt to 250-315 kgf-
cm (18-23 ft-lb) for M10 bolts or 450-565 kgf-cm
(32-41 ft-lb) for M12 bolts.
Use two wrenches to torque
CAUTION
the connection to prevent
applying excessive force to
the terminal, which can
damage the frame.
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 through the drive unit by terminals
located at the top of the base (Figure 8). Either
AC or DC supply voltage may be connected to
most drive units.
The standard operating voltage for the control
circuit for most CV-1 contactors is 100-240V
AC/DC. The operating voltage of CV-GAU-C
and CV-1HAU-C contactors is 460-550 VAC.
Refer to the SPECIFICATIONS for model
ratings. (Figure 11) in the OPERATION section
of this manual show the internal connections of
the drive unit, closing coils, and auxiliary switch.
Figure 8 – Control Terminals Location
Page 11
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