Owner manual
Specifications A-7
PowerFlex SCR Bus Supply User Manual
Publication 20S-UM001G-EN-P
Accessories
Line Reactors
A minimum reactance is required to limit peak currents in the AC line and
the bridge circuit. This can be accomplished either by a matched supply
transformer or by adding line reactors to ensure the requested minimum
voltage drop over the total line impedance. The preferred method is to
install a minimum 3% line reactor, which will also reduce line harmonics.
Use Table A.A
through Table A.D to select a line reactor based on the sum
of the drive’s connected DC Amps and the supply transformer rating.
For more details on the 1321-Series line reactors, see the 1321 Power
Conditioning Products Technical Data (publication 1321-TD001).
Table A.A 400V, 50Hz Line Reactor Selection
Drives Ranges of Drives DC Amp Sum for Typical Supply Transformers
(1)
Line Reactor
Sum of
DC Amps
630 kVA
5%
43
µH
800 kVA
5%
35 µH
1000 kVA
5.5%
31 µH
1250 kVA
6%
27 µH
1600 kVA
6%
22 µH
2500 kVA
6.5%
16 µH
3000 kVA
6.5%
13 µH
Induct.
[
µH]
Catalog No.
1321-…
(2)
up to 203
120-150 120-154 120-160 120-165 120-168 120-173 120-176 230 3R160-C
151-203 155-203 161-203 166-203 169-203 174-203 177-203 150 3R160-B
75 3R160-A
204 to 255
— — — 204-206 204-209 204-219 204-224 185 3R200-C
204-255 204-255 204-255 207-255 210-255 220-255 225-255 110 3R200-B
55 3R200-A
256 to 319
— — — — — 256-260 256-275 150 3RB250-C
256-319 256-319 256-319 256-319 256-319 261-319 276-319 90 3RB250-B
45 3RB250-A
320 to 407
125 3RB320-C
320-335 320-370 320-390 320-407 320-407 320-407 320-407 75 3RB320-B
336-407 371-407 391-407 — — — — 40 3RB320-A
408 to 509
105 3RB400-C
— 408-425 408-450 408-480 408-509 408-509 408-509 60 3RB400-B
408-509 426-509 451-509 481-509 — — — 30 3RB400-A
510 to 635
— — — 510-538 510-590 510-635 510-635 50 3R500-B
510-540 510-580 510-635 539-635 591-635 — — 25 3R500-A
636 to 763
— — — — 636-660 636-763 636-763 40 3R600-B
— 636-763 636-763 636-763 661-763 — — 20 3R600-A
764 to 938
— — — — — 764-900 764-938 29 3R750-B
— 764-800 764-870 764-900 764-938 901-938 — 15 3R750-A
939 to 1K0
— — — — — 939-1K0 939-1K0 27 3R850-B
— — — — 939-1K0 — — 15 3R850-A
(1)
The inductance value of the supply transformers includes 2.5 µH for 10 m feeder cable.
(2)
The number in the catalog string represents the fundamental AC current rating of the reactor.