User manual

LCX9000 Liquid-Cooled Drives User Manual
2-24 For more information visit: www.eaton.com
MN04005001E
September 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