Inovance MD880 Series - Page 65

3 Electrical Installation
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Ensure the drain wire of the motor cable shield is as short as possible and its width
must be no less than 1/5 of its length.
B
C
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Figure 3-21 Drain wire of motor cable shield
7) Ground (PE) terminal
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For personal safety and reliability of the equipment, connect the grounding (PE)
terminal to an e󶍽ective electrical ground. The resistance value of the ground
cable must be less than 10 Ω. Otherwise, the malfunction or even damage to the
equipment will be caused.
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Do not connect the grounding (PE) terminal of the AC drive to the neutral
conductor of the power system.
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See
"6 Options"
for dimensions of the protective grounding conductor.
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Use the proper grounding cable with yellow/green insulation for the protective
grounding conductor.
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Ground the shield.
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It is recommended that the AC drive be installed on a conductive metal mounting
surface. Ensure that the entire conductive bottom of the AC drive is in good contact
with the surface.
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Install the 󶍾lter and the AC drive on the same mounting surface to ensure 󶍾ltering
e󶍽ect.
8) Main circuit cable protection
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Add heat shrink tubes to cable lug copper tubes and cable core parts of main circuit
cables and ensure the heat shrink tube completely covers the cable conductor
part, as shown in the following 󶍾gure.
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
Figure 3-22 Heat shrink tube of the cable conductor part
9) Power input protection
Install protection devices at power input to the AC drive. The protection devices must