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12 Momentus XT Product Manual, Rev. B
2.10 Environmental specifications
This section provides the temperature, humidity, shock, and vibration specifications for Momentus XT drives.
2.10.1 Ambient temperature
Ambient temperature is defined as the temperature of th
e environment immediately surrounding the drive.
Actual drive case temperature should not exceed
65°C (149°F) within the operating ambient conditions.
Above 1000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.
2.10.2 Temperature gradient
Operating 20°C per hour (68°F per hour max), without condensation
Nonoperating 35°C per hour (95°F per hour max), without condensation
2.10.3 Relative humidity
Operating 5% to 95% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
2.10.4 Wet bulb temperature
Operating 37.7°C (99.8°F max)
Nonoperating 40°C (104°F max)
2.10.5 Altitude
Operating –304.8 m to 3,048 m (–1000 ft to 10,000+ ft)
Nonoperating –304.8 m to 12,192 m (–1000 ft to 40,000+ ft)
Operating: 0°C to 60°C (32°F to 140°F)
No
noperating: –40°C to 70°C (–40°F to 158°F)