Vacon NX User Manual page 27

TECHNICAL DATA
I = Thermal maximum continuous RMS current. Dimensioning can be done according to this current if the
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process does not require any overloadability or the process does not include any load variation.
I = Low overloadability current. Allows +10% load variation. 10% exceeding can be continuous.
L
I = High overloadability current. Allows +50% load variation. 50% exceeding can be continuous.
H
All values with cosϕ = 0.83 and efficiency = 97%.
*) c = power loss into coolant; a = power loss into air; T = total power loss.
All power losses obtained using max. supply voltage, I
control mode. All power losses are worst case losses.
If some other mains voltage is used, apply the formula
NX Liquid-Cooled drive output power.
The voltage classes for the inverter units used in the tables above have been defined as follows:
Input 710 VDC
=
Input 930 VDC
The enclosure class of all inverter units 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
recommended to check the rating with your distributor or Vacon.
Drive overrating may also be necessary if the process requires high starting torque.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
Rectified 525 VAC supply
= Rectified 690 VAC supply
and switching frequency of 3.6 kHz and Closed Loop
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DC P = (U /1.35)* 3 *In*cosϕ*eff%
DC
= 0.66*I or choose drive according to I
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vacon • 25
to calculate the
. It is
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4