Altitude; Figure 1 Recommended Derating For High Altitude Operation; Figure 2 Maximum Ambient Temperature For Full Load Operation At Higher Altitudes; Table 2 Altitude Conversion-Feet To Meters - Liebert POWER PROTECTION STATIC TRANSFER SWITCH User Manual

3.4

Altitude

The standard units are designed for full load operation up to 4000 feet (1200 m) above sea level. See
Figure 1 for recommended deratings for altitudes greater than 4000 feet (1200 m).
Figure 1 Recommended derating for high altitude operation
100
98
96
94
92
90
88
86
Operation at full load at a higher altitude can be accommodated in ambient temperatures less than
104°F (40°C) ambient. Figure 2 shows the maximum allowable ambient temperature for full load
operation at altitudes above 4000 feet (1200 m).
Figure 2 Maximum ambient temperature for full load operation at higher altitudes
Table 2 Altitude conversion—feet to meters
Altitude
Altitude (Feet Above Sea Level)
104.0 (40)
102.2 (39)
100.4 (38)
98.6 (37)
96.8 (36)
95.0 (35)
93.2 (34)
94.1 (33)
89.6 (32)
87.8 (31)
86.0 (30)
Feet Meters
4000 1200
4500 1372
5000 1524
5500 1676
6000 1829
6500 1981
7000 2134
Altitude—Feet
Feet
7500
8000
8500
Altitude
9000
9500
10000
7
Location Considerations
Meters
2286
2438
2591
2743
2896
3048