Parker NK Series, Technical Manual, Page: 38 / 100

38 - PVD 3664_GB_NK-November 2016.Docx
Maximum speed:
The former maximum speed N
max
= 3900 rpm obtained with U
n
=400 V
rms
and N
n
=3900
rpm leads to the new maximum speed N
max2
given as follows:
n
n
N
N
N N
2
max 2 max
*

rpm N 3476
3900
3476
* 3900
2 max
 
N.B.

If the rated voltage increases (U
n2
> U
n
), the new rated speed N
n2
and the new
maximum speed N
max2
will be greater than the former ones N
n
and N
max
. Moreover you
will have to check that the drive still shows able to deal with the new maximum electric
frequency.
Warning: If the main supply decreases, you must reduce the maximum
speed accordingly in order not damage the motor.
In case of doubt, consult us.
Rated power:
The former rated power P
n
=2520 W obtained with U
n
=400 V
rms
leads to the new rated
power P
n2
given as follows:
n
n
n n
U
U
P P
2
2
*

W P
n
2268
400
360
* 2520
2
 
Rated torque:
The former rated torque M
n
= 6.17 Nm obtained with U
n
=400 V
rms
leads to the new
rated torque M
n2
given as follows:
60
* * 2
2
2
2
n
n
n
N
P
M


Nm M
n
23 . 6
60
3476 * * 2
2268
2
 
