15
6. Wiring
•
This manual shows wiring for motors with Japanese standard specifications. Please consult with us for motors
with overseas specifications.
•
When wiring, follow the facility's electrical codes and extension regulations; otherwise, burning, electric shock,
injury or fire may occur.
•
The motor is not equipped with a protective device. However, it is required install an overload protector
according to facility electrical codes. It is recommended to install other protective devices (earth leakage
breaker, etc.), in addition to an overload protector, in order to prevent burning, electric shock, injury, and fire.
•
Never touch the terminals when measuring insulation resistance; otherwise electric shock may
occur
.
•
When using a star-delta starter , select one with an electromagnetic switch on the primary side (3-
contact type); otherwise, fire may
occur
.
•
When using
400V-class inverter
to drive the motor, mount a suppressor filter or reactor on the inverter side
or provide reinforced insulation on the motor side; otherwise, dielectric breakdown may cause fire or damage to
the equipment.
When measuring the insulation resistance of an
explosion-proof type motor
, confirm that there is no gas,
steam of other explosive substance in the vicinity, in order to prevent possible explosion or ignition.
•
When driving an explosion-proof type motor with an inverter
, use one inverter for one motor. Use the
approved inverter for the motor.
•
CAUTION
•
Do not handle the unit when electric power is applied. Be sure to turn off the power; electric shock may occur.
•
Connect a power cable to the unit according to the diagram shown inside the terminal box or in the maintenance
manual; otherwise, electric shock or fire may occur.
•
Do not forcibly bend, pull, or clamp the power cable and lead wires; electric shock or fire may occur.
•
Correctly install the grounding bolts; otherwise, electric shock may occur.
•
DANGER
•
Long cables cause excessive voltage to drop, select cables with appropriate diameter so that the voltage drop will be
less than 2%.
•
After wiring
outdoor and explosion-proof type motors
, check that terminal box mounting bolts are not loose,
and correctly attach the terminal box cover.
CAUTION
The lead-in condition of an
explosion-proof type motor
shall conform to the facility's electrical codes,
extension regulations and explosion-proofing guide, as well as the maintenance manual; otherwise, electric
shock, personal injury, explosion, fire, or damage to the equipment may occur.
!
!
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