WEG CFW-09 User Manual page 341

CHAPTER 9 - TECHNICAL SPECIFICATIONS
342
Models
6 A to 45 A / 220-230 V
54 A to 130 A/220-230 V
3.6 A to 24 A / 380-480 V
30 A to 142 A / 380-480 V
180 A to 600 A / 380-480 V
63 A / 500-600 V
79 A / 500-600 V
107 A to 472 A / 500-690 V
100 A to 428 A / 660-690 V
Table 9.1 - Output current derating for switching frequency  rated switching frequency
(4)
Maximum Current: 1.5 x I Nominal (for 60 seconds every 10 minutes).
I Nominal = Rated Current for CT applications considering the applicable
derating (depending on altitude or ambient temperature as specified in
note (3)).
The maximum output current is the same for CT and VT. This way the
inverter has a lower overload capacity when VT current is used.
(5)
The indicated maximum motor hp/kW ratings are based on WEG 230 V/
460 V/575 V 4 pole motors and normal duty loads. A precise inverter sizing
must consider the actual motor nameplate and application data.
(6)
Rated input current for single-phase operation.
Note: The 6 A , 7 A and 10 A / 220-230 V models can be operated with 2 input
phases only (single-phase operation) without output current derating.
(7)
Rated input current for three-phase operation:
This is a conservative value. In practice the value of this current depends on
the line impedance. Please refer to table 9.2:
Table 9.2 - X = Line impedance drop @ rated inverter output current;
I
input (rms)
(8)
Loss considering rated work conditions (rated output current and rated
switching frequency).
Switching
Load
Frequency
Type
CT/VT
10 kHz
CT
5 kHz
VT
10 kHz
CT/VT
10 kHz
CT
5 kHz
VT
10 kHz
5 kHz
CT/VT
10 kHz
VT
CT
VT
5 kHz
CT
VT
CT
VT
X (%) I (%)
input (rms)
131
0.5
1.0 121
2.0 106
99
3.0
4.0 96
96
5.0
= % of the rated output current
Output Current
Derating - %
0.8
Contact WEG
0.7
Contact WEG
0.8
Contact WEG