Technical Specifications
8-3
8
Note:
(1)
Steady-state rated current in the following conditions:
-
Indicated carrier frequencies. For operation with a 10 kHz carrier frequency it is necessary to derate the
output current according to table 8.2.
-
Surrounding air temperature: -10 °C to 50 °C (14 °F to 122 °F). The inverter is capable of operating with an maximum
surrounding air temperature of 60 °C (140 °F) if an output current derating of 2 % is applied for each ºC above
50 °C (122 °F).
-
Relative air humidity: 5 % to 90 % non-condensing.
-
Altitude: 1000 m (3,300 ft). Above 1000 m (3,300 ft) up to 4000 m (13,200 ft) the output current shall be
derated by 1 % for each 100 m (330 ft) above 1000 m (3,300 ft).
-
Ambient with pollution degree 2 (according to EN50178 and UL508C).
(2)
Table 8.1 presents only two points of the overload curve (activation time of 1 min and 3 s). The complete
information about the IGBTs overload for Normal and Heavy Duty Cycles is presented below.
D,*%7VRYHUORDGFXUYHIRUWKH1RUPDO'XW\1'F\FOH
E,*%7VRYHUORDGFXUYHDY\'XW\+'F\FOH
Figure 8.1
- Overload curves for the IGBTs
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0
10
20
30
40
50
60
70
80
90 100 110 120
I
o
I
RAT ND
¨WV
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0
10
20
30
40
50
60
70
80
90 100 110 120
I
o
I
RAT HD
¨WV
