Derating Curve For Ambient Temperature, Altitude And Carrier Frequency - Delta IED-S Series User Manual

Chapter 2 Installation | IED-S

2-3 Derating Curve for Ambient Temperature, Altitude and Carrier Frequency

Carrier Frequency (Fc) Derating Capacity
Frame
Fc (kHz) 2.2–4 kW 5.5–11 kW 15–22 kW 30–45 kW 55–75kW
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Carrier Frequency (Fc) Derating Curve
C
100% 100%
100% 100%
100% 100%
100% 100%
100% 100%
100% 100%
100% 100%
100% 100%
100% 100%
94.24% 100%
88.92% 100%
82.54% 95.35%
78.08% 91.02%
73.95% 86.98%
70.14% 84.14%
66.61% 80.67%
D E
100% 100%
100% 100%
100% 100%
100% 100%
100% 100%
100% 100%
100% 100%
100% 90.73%
100% 82.20%
92.32% 74.31%
85.21% -
78.63% -
72.53% -
66.87% -
61.62% -
56.74% -
2-4
E
100%
100%
100%
100%
100%
100%
100%
-
-
-
-
-
-
-
-
-