18 • vacon
TECHNICAL DATA
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4
Mains voltage 400-500 VAC, 50/60 Hz, 3~, 12-pulse drives
Drive output
Current
Motor output power
Converter
type
Thermal
I
th
[A]
Rated
cont. I
L
[A]
Rated
contin. I
H
[A]
Optimum
motor at I
th
(400V) [kW]
Optimum
motor at I
th
(500V) [kW]
Power loss
c/a/T
*)
[kW]
Chas-
sis
0460_5
460
418
307
250
315
6,5/0,5/7,0
CH72
0520_5
520
473
347
250
355
7,5/0,6/8,1
CH72
0590_5
590
536
393
315
400
9,0/0,7/9,7
CH72
0650_5
650
591
433
355
400
10,0/0,7/10,7
CH72
0730_5
730
664
487
400
450
12,0/0,8/12,8
CH72
1370_5 1370
1245 913 700
900 19,0/1,2/20,2 CH74
1640_5 1640
1491
1093 850
1050 24,0/1,4/25,4 CH74
2060_5 2060
1873
1373 1050
1350 32,5/1,8/34,3 CH74
2470_5
2470
2245
1647
1300
1600
38,8/2,2/41,0
2*CH74
2950_5
2950
2681
1967
1550
1950
46,3/2,6/48,9
2*CH74
3710_5
3710
3372
2473
1950
2450
58,2/3,0/61,2
2*CH74
4140_5
4140
3763
2760
2150
2700
65,0/3,6/68,6
2*CH74
Table 4-2. Power ratings and dimensions of NX Liquid-Cooled frequency converter (12-pulse), supply voltage 400-
500VAC
I
th
= Thermal maximum continuous RMS current. Dimensioning can be done according to this current if the process does not
require any overloadability or the process does not include any torque ripple or margin for overloadability.
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 included, 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.