11
6.Wiring
DANGER
Do not handle the unit when cables are live. Be sure to turn off the power; otherwise, electric shock may result.
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 result.
Do not forcibly curve, pull, or clamp the power cable and lead wires; otherwise, electric shock or fire may result.
Correctly ground the grounding bolt; otherwise, electric shock may result.
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 result.
CAUTION
When wiring, follow the facility's electrical codes and extension regulations; otherwise, burning, electric shock,
injury, or fire may result.
The motor is not equipped with a protective device. However, it is compulsory to 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 result.
When using a star-delta starter , select one with an electromagnetic switch on the primary side
(3-contact type); otherwise, fire may result.
When a using 400V-class inverter to drive the motor, mount a suppresser 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 driving an explosion-proof type motor with an inverter , use one inverter for one motor. Use the
approved inverter for the motor.
When measuring the insulation resistance of an explosion-proof type motor , confirm that there is no gas,
steam, or other explosive suhstance in the vicinity, in order to prevent possible explosion or ignition.
• Wiring for SUMITOMO standard 3-phase motor is shown below.
Refer to the respective instruction manual for brakemotors and motors made by other companies when they are used.
• Long cables cause 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.
6-1) Attaching and Detaching the Terminal Cover ( 0.1~04kW 3-phase motor )
(1) Detaching
As shown in Fig.8, hold both sides of the terminal box and pull it towards you. The cover will detach.
(2) Attaching
Press the terminal box cover onto the terminal box case until it snaps into place.
Fig. 8
To Next Page
Loading...
Need help?
General
