Rockwell Automation 1329I Integrated AC Drive/Motor, Series B FRN 3.X - Manual (Page 24)

4-2 Step 4 - Install External Power Components
1329I-5.5 Integrated Drive/Motor — January, 2000
4.3 Installing Input Isolation Transformers
Depending upon the requirements of the application, the 1329I unit may require input
isolation transformers to help eliminate the following:
• Damaging AC line voltage transients from reaching the 1329I unit.
• Line noise from the 1329I unit being fed back to the incoming power source.
An isolation transformer or line reactors of 3% drive input impedance should be used
between the distribution source and the 1329I unit in situations such as the following:
• The power distribution system feeding the 1329I unit contains power factor
correction capacitors.
• The power distribution system feeding the 1329I unit connects with heavy
industrial equipment that causes instantaneous line distribution shorts such as arc
welders, line-commutated thyristor converters, or line-started AC induction motors
greater than 50 HP (37 KVA).
• The distribution transformer is rated more than 100 KVA for 460 VAC with less
than 5% impedance.
• The distribution system is prone to frequent power outages or transient power
interruptions or significant voltage spikes.
Refer to Table 4.2 for the appropriate line reactor for your unit.
Table 4.2
Input Line Reactors
ATTENTION: Distribution system capacity above the maximum
recommended system KVA (100 KVA for 460 VAC three-phase, 5%
impedance) requires using an isolation transformer, a line reactor, or other
means of adding similar impedance. Failure to observe this precaution
could result in damage to, or destruction of, the equipment.
1329I Unit Input Line Reactor
HP Input Voltage Inductance Rated Amps Part No.
1 460V, 3-Phase 6.5 mH 4.0 1321-3RA4-B
2 460V, 3-Phase 3.0 mH 8.0 1321-3RA8-B
3 460V, 3-Phase 2.5 mH 12.0 1321-3RA12-B
5 460V, 3-Phase 1.5 mH 18.0 1321-3RA18-B
1 230V, 3-Phase 1.5 mH 8.0 1321-3RA8-A
2 230V, 3-Phase 0.8 mH 18.0 1321-3RA18-A