User manual

LCX9000 Liquid-Cooled Drives User Manual

MN04005001E

For more information visit: www.eaton.com

1-11

September 2007

= 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.

= Low overloadability current. Allows +10% torque ripple. 10% exceeding can be

continuous.

= High overloadability current. Allows +50% torque ripple. 50% exceeding can be

continuous.

All values with cosϕ = 0.83 and efﬁciency = 97%

c/a/T: c = power loss into coolant; a = power loss into air; T = total power loss

All power losses obtained using max. supply voltage I

and switching frequency of 3.6 kHz

and Closed Loop control mode. All power losses are worse case losses.

If some other mains voltage is used, apply the formula

to calculate the Liquid-Cooled drive electrical output power.

If the motor is continuously run (besides start and stop ramps) at frequencies below 5 Hz, pay

attention to the drive dimensioning for low frequencies, i.e. maximum I

= 0.66* I

or choose

drive according to I

. Check the rating with your Eaton distributor.

Drive overrating may also be necessary if the process requires high starting torque.

The voltage classes for the inverter units used in the tables above have been deﬁned as

follows:

The enclosure class of all inverter units is IP00.

Input 540V DC = Rectiﬁed 400V AC supply

Input 675V DC = Rectiﬁed 500V AC supply

DC P = (Un/1.35) *

*In*cos

*eff%