Rockwell Automation 1336Z SPIDER - FRN 2.xxx-5.xxx - Manual (Page 13)

General Installation for All Drives 2–3
AC Supply Source 1336 SPIDER drives are suitable for use on a circuit capable of
delivering up to a maximum of 200,000 rms symmetrical amperes,
600 volts.
Unbalanced Distribution Systems
This drive is designed to operate on earthed-neutral, three-phase
supply systems whose line voltages are symmetrical. 240V AC drives
may be operated with one phase referenced to ground.
Ungrounded Distribution Systems
1336 SPIDER drives are not designed to operate in ungrounded
systems.
Input Power Conditioning In general, the 1336 SPIDER is suitable for direct connection to an
AC line of the correct voltage. Certain conditions can exist, however,
that prompt consideration of a line reactor or isolation transformer
ahead of the drive.
The basic rules to aid in determining whether a line reactor or
isolation transformer should be considered are as follows:
1. If the AC source experiences frequent power outages or
significant voltage transients, users should calculate the source
transformer VA. If the source transformer VA exceeds the VAmax
(1MVA) and the drive is installed close to the source, it is an
indication that there may be enough energy behind these voltage
transients to cause nuisance input fuse blowing, overvoltage
faults or drive power structure damage. In these cases, a line
reactor or isolation transformer should be considered.
2. If the AC source does not have a neutral or one phase referenced
to ground (see Unbalanced Distribution Systems), an isolation
transformer with the neutral of the secondary grounded is required. If
the line-to-ground voltages on any phase can exceed 125% of the
nominal line-to-line voltage, an isolation transformer with the neutral
of the secondary grounded, is highly recommended.
3. If the AC line supplying the drive has power factor correction
capacitors that are switched in and out, an isolation transformer
or 5% line reactor is recommended between the drive and
capacitors. If the capacitors are permanently connected and not
switched, the general rules above apply.
!
ATTENTION: To guard against personal injury and/or
equipment damage caused by improper fusing, use only the
recommended line fuses specified in Table 2.A.