Maeda D3001, Руководство по эксплуатации

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Section 4 – ELECTRIC MOTOR OPERATION Mini-Crawler Crane M A E D A
4-122 3/2019 MC305C-3
ELECTRIC MOTOR
OPERATION
Pre-start Inspection
Pre-start Visible Checks
WARNING! For details in checking before
starting engine (visible checks), see
"Pre-Start Visible Checks" on page 5-22.
As to the machine abiding by engine and
electric motor specifications, potential fire in
the machine may occur if a heap of
flammable materials and oil leak are present
around the hot sections such as the Inverter
unit, power supply box, and power unit.
Carefully check around these areas. Should
you find any abnormality, be sure to fix it or
contact us or our sales service agency.
Checking Before Starting Electric
Motor
For more information on inspections before
starting the electric motor, see "Pre-Start
Inspection - Before Starting Engine" on page
5-25. Perform the tasks other than those related
to the engine.
Checking After Starting Electric Motor
For more information on checking after starting
electric motor, see "Post-Start Inspection - After
Starting Engine" on page 5-33.
Connecting Power Supply Cable
WARNING! The following precautions
should always be observed. Potential
serious accident may occur if disregarded.
• Only personnel qualified according to laws
and regulations of your country are
allowed to establish power connection
between power supply equipment and this
machine.
• Be sure to supply the machine
specifications-compliant power (AC 380,
400V) to this machine.
Power supply
voltage
Power
current
Power supply
frequency
380, 400 V 11.5 A 50 Hz
• A cabtyre cable must adhere to the
specifications of this machine (AC 380,
400V).
Motor voltage Cable spec. Cable length
380, 400 V
3.5sq 20m
5.5sq 40m
• Always use a dry cabtyre cable.
Potential electric shock may occur if the
cabtyre cable terminal is wet or power
connection is performed with moisten
hands.
• Always turn OFF the main breakers of
power connecting the cabtyre cable to this
machine.
• Keep the cabtyre cable free of flaws and
bend.
Be sure to replace a damaged cabtyre
cable with a new one.
• Ensure that no sharp protrusion is present
at an area where the cabtyre cable is
routed.
Failure to follow the above precaution may
cause the cable to get snagged on the
protrusion and damaged or broken.
• To connect the cabtyre cable to the
terminal block in the power supply box,
torque the screw to the specified value.
Potential fire or electric shock may occur if
the screw comes loose that could develop
a short circuit.
• To connect the cabtyre cable to the
terminal block in the power supply box,
tighten the cable ground screw properly
for the prevention of water entry and cable
protection.
• The ground wire of the cabtyre cable must
be properly connected to the "Ground
terminal" in the power supply box.
• Always close the power supply box door
completely after work, and attach the
Inverter unit cover properly.