Multi-drive protection – Rockwell Automation 1336T Wiring and Grounding Guide, (PWM) AC Drives User Manual

Page 43

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Rockwell Automation Publication DRIVES-IN001M-EN-P - March 2014

43

Power Distribution Chapter 2

Multi-drive Protection

Use a separate line reactor for each drive that shares a common power line.
Individual line reactors provide filtering between each drive to provide optimum
surge protection for each drive. However, if it is necessary to group more than one
drive on a single AC line reactor, use this process to verify that the AC line
reactor provides a minimum amount of impedance:

In general, up to five drives can be grouped on one reactor.

Add the input currents of the drives in the group.

Multiply that sum by 125%.

Refer to 1321 Power Conditioning Products Technical Data, publication

1321-TD001

, to select a reactor with a maximum continuous current

rating greater than the multiplied current.

1336 PLUS,
PLUS II
IMPACT
FORCE

C250

600

187 (250)

2500

3R250-B

0.09

250

C300

600

224 (300)

3000

3R320-B

0.075

320

C350

600

261 (350)

3000

3R400-B

0.06

400

C400

600

298 (400)

4000

3R400-B

0.06

400

C450

600

336 (450)

4500

3R500-B

0.05

500

C500

600

373 (500)

5000

3R500-B

0.05

500

C600

600

448 (600)

5000

3R600-B

0.04

600

C650

600

(650)

5000

3R750-B

0.029

750

C700

600

(700)

5000

3R850-B FN-1

0.027

850

C800

600

(800)

5000

3R850-B FN-1

0.027

850

CP/CPR350

600

261 (350)

N/A

N/A

N/A

N/A

CP/CPR400

600

298 (400)

N/A

N/A

N/A

N/A

(1) Shaded rows identify drive ratings without built-in inductors.
(2) Maximum suggested KVA supply without consideration for additional inductance.
(3) 2000 KVA represents 2 MVA and greater.
(4) N/A = not available at time of printing.

Table 13 - AC Line Impedance Recommendations for Bulletin 1336 Drives (Continued)

Drive

Drive Catalog
Number

(1)

Volts

kW (Hp)

Max Supply
kVA

(2)(3)

3% Line Reactor
Open Style, 1321-

Reactor Inductance
(mH)

Reactor Current
Rating (amps)

(4)

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