Applicable Cables And Wiring Length - Mitsubishi Electric FR-A872-E Instruction Manual

• The figure below shows how to connect bus bars to the main circuit terminals.
NOTE
• Ensure the upper main circuit terminal cover (front) and the lower main circuit terminal cover is reinstalled before the operation
is started.
2.5.4

Applicable cables and wiring length

Select a recommended size cable to ensure that the voltage drop ratio is within 2%.
If the wiring distance is long between the inverter and motor, the voltage drop in the main circuit will cause the motor torque to
decrease especially at a low speed.
 Bus bar connection
The following tables show combinations recommended when a wiring length is 20 m (at 690 V input power supply).
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2. INSTALLATION AND WIRING
2.5 Main circuit terminals