Technical data
vacon • 23
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
4
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 load variation or margin for
overloadability.
I
L
= Low overloadability current. 10% load variation. 10% exceeding can be continuous.
I
H
= High overloadability current. 50% load variation. 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. All power losses obtained using max. supply voltage, I
th
and switching frequency of 3.6 kHz and
Closed Loop control mode. All power losses are worst case losses.
If some other mains voltage is used, apply the formula P =
x Un x In x cos
ϕ
x eff% to calculate the VACON
®
NX Liquid-Cooled drive output power.
The enclosure class for all VACON
®
NX Liquid-Cooled AC drives is IP00.
If the motor is continuously (besides start and stop ramps) run at frequencies below 5 Hz, pay attention to the
drive dimensioning 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 nearest distributor.
Drive overrating may also be necessary if the process requires high starting torque.
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 6. Power ratings of VACON
®
NX Liquid-Cooled AC drive (12-pulse),
supply voltage 400-500 VAC
Mains voltage 400-500 VAC, 50/60 Hz, 3~, 12-pulse drives
AC drive type
Drive output
Power loss
c/a/T
*)
[kW]
Chassis
Current
Motor output power
Thermal
I
th
[A]
Rated cont. I
L
[A]
Rated
contin. I
H
[A]
Optimum
motor at I
th
(400 V) [kW]
Optimum
motor at I
th
(500 V) [kW]
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 5. Power ratings of VACON
®
NX Liquid-Cooled AC drive (6-pulse),
supply voltage 400-500 VAC
Mains voltage 400-500 VAC, 50/60 Hz, 3~, 6-pulse drives
3
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