Instruction manual

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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

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