INSTALLATION
Page 9
AMBIENT CONDITIONS
Do not install this equipment
in areas where unusual
service conditions exist. Using
this equipment in other than
usual service conditions can
result in equipment failure.
Toshiba HCV-7HA and HCV-7HAL contactors are
intended for use in usual service conditions as
defined in NEMA ICS 1. The temperature of the
cooling air (ambient air temperature) surrounding the
contactor should be between the limits of -5
°
C (23
°
F)
and +40
°
C (104
°
F). The altitude of the equipment
installation should not exceed 3300-ft (1000 m).
In particular, avoid the following installation
conditions:
•
Excessive dust
•
Corrosive gases
•
Extreme variations in temperature
•
Very high or low humidity
•
Vibrations
•
Inclined locations
If there is a chance that condensation can occur at
the installation location, a space heater should be
installed inside the contactor enclosure.
NOTE:
Temperature, altitude or other conditions
outside of the usual limits may require
derating or other special equipment.
Contact your nearest Toshiba
representative for additional information.
MOUNTING THE CONTACTOR
The contactor is designed to mount to a flat,
horizontal 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 M10 or M12 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
the connection to prevent
applying excessive force to
the terminal, which can
damage the frame.
WARNING
CAUTION
