13.3 Conformity with EMC Directives in Europe
13-7
Chapter 13 COMPLIANCE WITH STANDARDS
13.3.2 Recommended installation method
Electrical engineers should install wiring for inverters and motors. Perform installation and wiring in
accordance with the following method as much as possible to conform to the EMC Directives.
For EMC filter built-in type
1) Install the inverter on a metal plate or other grounded panel. Use shielded wires for the motor and
minimize the wiring as short as possible. Ground the shield of the shielded wires by securely clamping
it to the metal plate and establish an electrical connection between the shield and the ground terminal
of the motor. Use wiring guides to keep the input line away from the output line as far as possible.
For inverters with a capacity of 5.5 to 11 kW, connect the input grounding wire to the grounding terminal
at the front, left-hand side, and the output grounding wire to that on the main circuit terminal block.
(Refer to Figure 13.3-1)
Figure 13.3-1 Wiring for the EMC Filter Built-in Type with a Capacity of 5.5 to 11 kW
2) Use shielded wires for the wiring of the inverter's control terminals and for the RS-485 communication
signal cable. Securely clamp the shields of the both lines to the grounded panel as in the wiring for the
motor.
3) If the radiation noise exceeds the standards, install the inverter and peripheral equipment into a metal
panel as shown in Figure 13.3-2.
Figure 13.3-2 Installing inside Panel
Output
grounding
Output wires
Input grounding
Input wires
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