20 • vacon
TECHNICAL DATA
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4
Mains voltage 525-690 VAC, 50/60 Hz, 3~, 12-pulse drives
Drive output
Current
Motor output power
Converter
type
Thermal
I
th
[A]
Rated
contin. I
L
[A]
Rated
contin. I
H
[A]
Optimum
motor at I
th
(525V) [kW]
Optimum mo-
tor at I
th
(690V) [kW]
Power loss
c/a/T
*)
[kW]
Chas-
sis
0325_6
325
295
217
200
250
7,5/0,4/7,9
CH72
0385_6
385
350
257
250
355
9,0/0,5/9,5
CH72
0416_6
416
378
277
250
355
9,4/0,5/9,9
CH72
0460_6
460
418
307
315
400
10,0/0,5/10,5
CH72
0502_6
502
456
335
355
450
12,0/0,6/12,6
CH72
0820_6
820
745
547
600
750
19,0/1,0/20,0
CH74
0920_6
920
836
613
650
850
21,3/1,2/22,5
CH74
1030_6
1030
936
687
750
950
22,0/1,1/23,1
CH74
1180_6
1180
1073
787
800
1100
25,0/1,3/26,3
CH74
1300_6
1300
1182
867
950
1200
31,0/1,6/32,6
CH74
1500_6
1500
1364
1000
1050
1400
38,0/1,9/39,9
CH74
1850_6
1850
1682
1233
1250
1650
39,6/2,0/41,6
2*CH74
2120_6
2120
1927
1413
1450
1900
45,0/2,4/47,4
2*CH74
2340_6
2340
2127
1560
1600
2100
55,8/2,9/58,7
2*CH74
2700_6
2700
2455
1800
1850
2450
68,4/3,4/71,8
2*CH74
3100_6
3100
2818
2067
2150
2800
NA
2*CH74
Table 4-4. Power ratings and dimensions of NX Liquid-Cooled frequency converter (12-pulse), supply voltage 525—
690VAC
I
th
= Thermal maximum continuous RMS current. Dimensioning can be done according to this current if the proc-
ess does not require any overloadability or the process does not include any torque ripple
I
L
= Low overloadability current. 10% torque ripple. 10% exceeding can be continuous.
I
H
= High overloadability current. 50% torque ripple. 50% exceeding can be continuous.
All values with cos
ϕ
= 0,83 and efficiency = 97%
*) c = power loss into coolant; a = power loss into air; T = total power loss; power losses of input chokes not in-
cluded, see chapter 5.4.
All power losses obtained using max. supply voltage, I
th
and switching frequency of 3.6 kHz and
ClosedLoop control mode. All power losses are worst case losses.
If some other mains voltage is used, apply the formula
P =
3
x Un x In x cos
ϕ
x eff%
to calculate the NX Liquid-
Cooled drive output power.
The enclosure class for all NX Liquid-Cooled frequency converters is IP00.
If the motor is continuously (besides start and stop ramps) run at frequencies below 5 Hz, pay attention to the drive dimension-
ing for low frequencies, i.e. maximum I
H
= 0.66*I
th
or choose drive according to I
H
. It is recommended to check the rating with
your distributor or Vacon.
Drive overrating may also be necessary if the process requires high starting torque.