Fagor QC-PDS - 2.2.4 Derating based on ambient temperature

 Power supplies
80
2.
POWER SUPPLIES
Regenerative Power Supplies
· 60 ·
Ref.2003
· 60 ·
QC-PDS
HARDWARE
2.2.4 Derating based on ambient temperature
The following graphs show the maximum rms current in continuous S1
(Pn) and intermittent S6-40% (PS6) duty cycles for a switching frequency
of the 4 kHz or 8 kHz power transistors within a temperature range of 5
°C (41 °F) and 55 °C (131 °F). Refer to the load cycles in the previous
section.
QC-RPS-030-F  . Power derating graph
QC-RPS-160-
 . Power derating graph
T. H2/13 QC-RPS-030-F  . Power derating at 8 kHz.
Amb. Temp.
PS1 PS6-40%
°C °F kW kW
35 95 30.0 39.0
40 104 30.0 39.0
45 113 30.0 39.0
50 122 27.6 35.8
55 131 24.8 32.3
F. H2/15
QC-RPS-030-F  . Power derating curve at 8 kHz.
T. H2/14 QC-RPS-160-  . Power derating at 4 kHz.
Amb. Temp. PS1 PS6-40%
°C °F kW kW
35 95 160.0 175.0
40 104 160.0 175.0
45 113 160.0 175.0
50 122 145.0 160.0
55 131 134.0 146.0
F. H2/16
QC-RPS-160-  . Power derating curve at 4 kHz.
k W
2 0
3 5 / 9 5
5 5 / 1 3 1
° C / ° F
4 5 / 1 1 3
4 0 / 1 0 4
5 0 / 1 2 2
2 5
3 0
3 5
4 0
4 5
P S 6 - 4 0 %
P S 1
3 9
3 0
2 7 . 6
2 4 . 8
3 5 . 8
3 2 . 3
k W
2 5
3 5 / 9 5 5 5 / 1 3 1
° C / ° F
4 5 / 1 1 3
4 0 / 1 0 4
5 0 / 1 2 2
5 0
7 5
P S 6 - 4 0 %
1 6 0
1 4 5
1 3 4
1 6 0
P S 1
1 0 0
1 2 5
1 5 0
1 7 5
2 0 0
1 4 6
1 7 5