Chapter 9 Specification MS300 (IP66 / NEMA 4X)
9-7
9-4 Derating for Ambient Temperature and Altitude
Derating for Ambient Temperature
Derating for Altitude
70
75
80
85
90
95
100
105
110
0 500 1000 1500 2000 2500
Current Rated Ratio(%)
at Standard Ambient Temperature
Altitude(m)
DeratingforAltitude
Standard Ambient Temperature:
40
C
for IP66 / NEMA 4X / UL Type 4X