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Step-by-Step Basic Installation Section 2-3
!Caution Be sure not to connect an AC power supply to the output terminals. Other-
wise, there is the possibility of damage to the inverter and the danger of injury
and/or fire.
!Caution Remarks for using ground fault interrupter breakers in the main power supply:
Adjustable frequency inverter with integrated CE-filters and shielded
(screened) motor cables have a higher leakage current toward earth GND.
Especially at the moment of switching ON this can cause an inadvertent trip of
ground fault interrupters. Because of the rectifier on the input side of the
inverter there is the possibility to stall the switch-off function through small
amounts of DC current.
Please observe the following:
• Use only short time-invariant and pulse current-sensitive ground fault
interrupters with higher trigger current.
• Other components should be secured with separate ground fault inter-
rupters.
• Ground fault interrupters in the power input wiring of an inverter are not an
absolute protection against electric shock.
!Caution Be sure to install a fuse in each phase of the main power supply to the
inverter. Otherwise, there is the danger of fire.
!Caution For motor leads, ground fault interrupter breakers and electromagnetic con-
tactors, be sure to size these components properly (each must have the
capacity for rated current and voltage). Otherwise, there is the danger of fire.
Power Input
Output to Motor
MX2 Inverter
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