User Manual Instruction Manual

3-4 GV6000 AC Drive User Manual
3.1.1.2 Input Power Conditioning
Certain events on the power system supplying a drive can cause component damage
or shortened product life.
All Drives
• The power source has power factor correction capacitors switched in and out of the
system, either by the user or by the power company.
• The power source has intermittent voltage spikes in excess of 6000 volts. These
spikes could be caused by other equipment on the line or by events such as
lightening strikes.
• The power source has frequent interruptions.
5 HP of Less Drives (includes all factors in the All Drives category as well)
• The nearest supply transformer is larger than 100kVA or the available short circuit
(fault) current is greater than 100,000 A.
• The impedance in front of the drive is less than 0.5%.
It is recommended that the user install a minimum amount of impedance between the
drive and the source if any of the above conditions exist. This impedance can come
from the supply transformer, the cable between the transformer and the drive or an
additional transformer or reactor.
3.1.1.3 AC Input Phase Selection for Single Phase Operation (Frames 5 & 6 Only)
Moving the “Line Type” jumper shown in figure 3.2 will allow single or three-phase
operation.
Important: When selecting single-phase operation, input power must be applied to
the R (L1) and S (L2) terminals only. See Figure 2.4 and Table 2.7 for the
terminal block location and Figure 5.2 for the terminal layout.
Note: Single-phase operation provides 50 percent of drive rated current.
!
ATTENTION: Ensure that all power to the drive has been removed
before performing the following. Failure to follow this precaution could
result in a shock hazard.
!
ATTENTION: DC bus capacitors retain hazardous voltages after input
power has been removed. After disconnecting input power, wait five
minutes for the DC bus capacitors to discharge and then check the
voltage with a voltmeter to ensure the DC bus capacitors are discharged
before touching any internal components. Failure to observe this
precaution could result in severe bodily injury or loss of life.