Maeda MC285C-3 - Connecting Power Supply Cable

M A E D A Mini-Crawler Crane Section 4 –ELECTRIC MOTOR OPERATION
1/2019 MC285C-3 4-117
Connecting Power Supply Cable
WARNING! Only supply machine
specifications-compliant power (AC 380 V,
400 V) to this machine.
Power Supply
Voltage
Power Current
Power Supply
Frequency
380, 400
11.5 A
50 Hz
Only use a cabtyre cable for the power cable that
meets or exceeds the specifications of this
machine (AC 380 V, 400 V).
The length of a cabtyre cable can vary depending
on cable specifications. Cable length should
conform to values listed below.
Motor voltage
Cable
spec.
Cable length
380, 400
3.5 sq.
20 m
5.5 sq.
40 m
WARNING!
• Always use a dry cabtyre cable. Potential
electric shocks may occur if the cabtyre
cable terminal is wet or power connection is
performed with moist hands.
• Always turn OFF the main breakers of power
supply equipment and this machine before
connecting the cabtyre cable to this
machine.
• Keep the cabtyre cable free of flaws and
bends. 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 becoming 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 and 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 “PE terminal”
terminal at lower left in the power supply
box.
• Always close the power supply box door
completely after work, and attach the
Inverter unit cover properly.
Use the following procedure for establishing
power connection between power supply
equipment and this machine.
1. Make sure the breakers of power supply
equipment and Inverter unit are OFF.
Fig. 4-304
2. Unlock the door (3) of the power supply box
(2) by pulling the handle (4) toward you to
open it.
Fig. 4-305
3. Remove the cover (6) of the terminal block (5)
in the power supply box.
Fig. 4-306
Draw the machine specifications-compliant
cabtyre cable (A) through the cable inserting
hole (7) at the bottom of the power supply box
to connect it to the terminal block (5).