LCX9000 Liquid-Cooled Drives User Manual
2-20
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www.EatonElectrical.com
MN04005001E
January 2007
Input Chokes
The input choke carries out several functions in the Cutler-Hammer liquid-cooled drive.
Connection of the input choke is necessary except if you have a component in your system
that performs the same tasks (e.g. a transformer). The input choke is needed as an essential
component for motor control, to protect the input and DC-link components against abrupt
changes of current and voltage as well as to function as a protection against harmonics.
The input chokes are included in the standard delivery of Cutler-Hammer liquid-cooled
drives. However, you can also order your drive without the choke.
The Cutler-Hammer chokes listed in
Table 2-16
are meant for supply voltages of 400 – 500V
and 525 – 690V.
Table 2-16: Input Choke Dimensioning, 6-Pulse Supply
Inductances for different supply voltages: A = 400 – 480V AC, B = 500 – 690V AC. See
Table 2-17
.
Converter amperages written in
bold italic
require three (3) chokes of the designated kind per
unit with 6-pulse supply.
Converter
Amperages
(400 – 500V AC)
Converter
Amperages
(690V AC)
Choke Type
Thermal
Current (A)
Nominal
Inductance
(µH) A/B
Calculated
Loss (W)
16 – 22
12 – 23
CHK0023N6A0
23
1900
145
31 – 38
31 – 38
CHK0038N6A0
38
1100
170
45 – 61
46 – 62
CHK0062N6A0
62
700
210
72 – 87
72 – 87
CHK0087N6A0
87
480
250
105 – 140
105 – 140
CHK0145N6A0
145
290
380
168 – 261
170 – 261
CHK0261N6A0
261
139/187
460
300 – 385
325 – 385
820 – 1180
1850 – 2340
CHK0400N6A0
400
90/126
610
460 – 520
1370 (CH74)
416 – 502
1300 – 1500
2700 – 3100
CHK0520N6A0
520
65/95
810
590 – 650
1640
590 – 650
1700 – 1900
CHK0650N6A0
650
51/71
890
730
2060
750
CHK0750N6A0
750
45/61
970
820
2300
—
CHK0820N6A0
820
39/53
1020
920 – 1030
—
CHK1030N6A0
1030
30/41
1170
1150
—
CHK1150N6A0
1150
26/36
1420
2470 – 2950
—
CHK0520N6A0
520
65/95
810
3710
—
CHK0650N6A0
650
51/71
890
4140
—
CHK0750N6A0
750
45/61
970
