2. Transportation and installation
2 - 5
2.2.5 Electric wiring
Warning
Only qualified persons are allowed to wire the product.
- Before wiring, be sure to shut off the power supply. Never perform wiring work while the
product is energized.
- Ensure a stable power supply with no voltage surges.
- Ensure that an ground fault circuit interrupter with appropriate capacity for ground fault and
load is used in the power supply of the product to prevent electrical shock and burnout of the
compressor motor. See “6-1 Specification table” for details.
Use a power supply suitable for the specifications of the product.
Be sure to connect the ground connection.
- Grounding should never be connected to a water line, gas line or lightning rod.
- Multiple wiring is dangerous because it may lead to heat generation and cause a fire.
- Do not modify the electrical wiring of the power supply.
- For use in Europe, install a breaker compliant with applicable IEC standards to the power
supply of the prodct.
[Wiring of power supply]
Please refer to 6-2 page attached table 1 for the rated voltage. The permissible voltage fluctuation is 5%.
Ensure that the voltage imbalance between phase is no more than 3%.
Remove the transformer top cover, than connect up the power supply wires to the R, S, and T terminals
on the terminal block of the transformer and also the earth wire to the PE terminal.
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Be sure to install an ground fault circuit interrupter to the power supply. (To be prepared by the user.)
Specifications of power supply cable
Prepare the following power supply cable.
Power supply cable: 8mm
2
(8AWG) or larger, Cable outside diameter Approx. 26mm, 4 cores (including
ground)
Approx. 0.3m is necessary to route the internal wiring of the product.
Power supply cable length
The power supply cable length from the product should be less than 30m.
Terminal block
(refer to “1.1 Name and function of parts” for details).
Connect the power supply cable and ground to the terminal block on the right. The connection size is M5.
Be sure to use a round crimped terminal.
Applicable crimped terminal width: 13mm or less