Sailer Manual HPVFE Sailer Manual HPVFE
10
Input Power Conditioning
The drive is suitable for direct connection to input power within the rated voltage of the drive (see
Appendix A
).
Listed in
Table 1.C
are certain input power conditions which may cause component damage or reduction in
product life. If any of the conditions exist, as described in
Table 1.C,
install one of the devices listed under the
heading Corrective Action on the line side of the drive.
Important:
Only one device per branch circuit is required. It should be mounted closest to the branch and sized to
handle the total current of the branch circuit.
Table 1.C Input Power Conditions
Input Power Condition
Corrective Action
Low Line Impedance (less than 1% line reactance)
·
Install Line Reactor
(1)
·
or Isolation Transformer
Greater than 120 kVA supply transformer
Line has power factor correction capacitors
Line has frequent power interruptions
Line has intermittent noise spikes in excess of 6000V (lightning)
Phase to ground voltage exceeds 125% of normal line to line voltage
·
Remove MOV jumper to ground.
·
or Install Isolation Transformer with grounded secondary if
necessary.
Ungrounded distribution system
（
1
）
Refer to
Appendix B
for accessory ordering information.
General Grounding Requirements
The drive Safety Ground - (PE) must be connected to system ground. Ground impedance must conform to the
requirements of national and local industrial safety regulations and/or electrical codes. The integrity of all ground
connections should be periodically checked.
Figure 1.3 Typical Grounding
W/L1
S/L2
T/L3
U/T1
V/T2
W/T3
SHLD
Ground Fault Monitoring
If a system ground fault monitor (RCD) is to be used, only Type B (adjustable) devices should be used to avoid
nuisance tripping.
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