IMPULSE®•G+ & VG+ Series 4 Instruction Manual - February 2017
3-15
Insulation Barrier
Insulation barriers are packaged with drive models 4370 through 41090 to provide added protection
between terminals. Magnetek recommends using the provided insulation barriers to ensure proper
wiring. Refer to Figure 3-9 for instructions on placement of the insulation barriers.
Figure 3-9: Installing Insulation Barriers
Grounding
5. Connect terminal G to the common panel ground. Use ground wiring as specified in “Suggested
Circuit Protection and Wire Size” on page 3-6, and keep the length as short as possible.
• Ground Resistance:
• For 230V class: 100 or less
• For 460V class: 10 or less
• For 575V class: 10 or less
• Never run the IMPULSE
®
•G+ & VG+ Series 4 drive ground wires in common with welding
machines, or other high-current electrical equipment.
• When more than one drive is used for the same system, ground each directly or daisy-chain to
the ground pole. Do not loop the ground wires.
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