MGI M4000E series, Instruction Manual

Page: 52 / 215

41
2
INSTALLATION AND WIRING
2.3.5 Peripheral devices
(1) Selection of peripheral devices
Check the capacity of the motor to be used with the inverter you purchased.
Appropriate peripheral devices must be selected according to the capacity.
Refer to the following list and prepare appropriate peripheral devices:
Note:1. • Select the MCCB according to the inverter power supply capacity.
• Install one MCCB per inverter.
2. The power supply cable size of the motor indicated assumes that its length is
20m (65.62 feet).
3. When the inverter capacity is greater than the motor capacity, choose the
breaker and magnetic contactor in accordance with the inverter type and
choose the cables and power factor improving reactor in accordance with the
motor output.
4. When the breaker on the inverter primary side trips, check for the wiring fault
(short circuit), damage to internal parts of the inverter, etc. Identify the cause of
the trip, then remove the cause and power on the breaker.
5. For installations in the United States or Canada, the circuit breaker must be
inverse time or instantaneous trip type.
Installation and selection of moulded case circuit breaker
Install a moulded case circuit breaker (MCCB) in the power supply side for protection of
the inverter's primary wiring. Refer to the previous table and choose the MCCB
according to the inverter's power supply side power factor (which changes with the
power supply voltage, output frequency and load). Especially for a completely
electromagnetic type MCCB, the one with a larger capacity must be selected since its
operational characteristics change with harmonic currents. (Check the data of the
corresponding breaker for confirmation.) Also the ground leakage circuit breaker used
should be durable against harmonics/surges.
Inverter Type
Motor
Output
(kW)
(HP)
Power
Supply
Capacity
(kVA)
Moulded case circuit breaker (MCCB)
or Ground Leakage Circuit Breaker
(NV) (Note 5)
Magnetic
Contactor (MC)
Standard
With power factor
improving
reactor
M4500E-001 0.75 (1) 2.5 5A 5A 3A
M4500E-002 1.5 (2) 4.5 10A 10A 5A
M4500E-003 2.2 (3) 5.5 15A 10A 7A
M4500E-005 3.7 (5) 9 20A 15A 10A
M4500E-007.5 5.5 (7.5) 12 30A 20A 15A
M4500E-010 7.5 (10) 17 30A 30A 21A
MCCB INV
MCCB INV
IM
IM
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