WEG CFW11W G2 Series User Manual page 102

I
o
I
nom ND
2,0
1,9
1,8
1,7
1,6
1,5
1,4
1,3
1,2
1,1
1,0
0,9
I
o
I
nom HD
2,0
1,9
1,8
1,7
1,6
1,5
1,4
1,3
1,2
1,1
1,0
Figure 8.1: (a) and (b) Overload curves of the IGBTs for operation under normal duty (ND) and operation under heavy duty (HD)
(3) The motor power are just reference values; they are specified for WEG 4-pole 690 V motors for models with DC power supply of 758...1150 Vdc. The proper
sizing must be done according to the rated current of the motors used.
(4) All dissipated powers obtained using the maximum input voltage, rated current (ND or HD), maximum output voltage and switching frequency of 2.0 kHz.
All indicated losses are for the worst case.
0 10 20 30 40 50 60 70 80 90 100
(a) IGBTs overload curve for the Normal Duty (ND) cycle
0 10 20 30 40 50 60 70 80 90 100
(a) IGBTs overload curve for the Heavy Duty (HD) cycle
Technical Data
ATTENTION!
One overload each
10 minutes.
∆ t (s)
110 120
ATTENTION!
One overload each
10 minutes.
∆ t (s)
110 120
8
CFW-11W G2 | 8-3