Ambient conditions
The following table shows the ambient conditions for the MOVITRAC® LTP-B inverter:
Ambient temperature range during operation (for PWM frequency of 2 kHz) | -10 °C – +50 °C (IP20/NEMA 1) -10 °C – +40 °C (IP55/NEMA 12K) -20 °C – +40 °C (IP66/NEMA 4X) |
Derating depending on the ambient temperature | 2.5%/°C – 60 °C for inverters with degree of protection IP20/NEMA 1 |
3%/°C – 50 °C for inverters with degree of protection IP66/NEMA 4X | |
3%/°C – 50 °C for inverters with degree of protection IP55/NEMA 12K | |
Storage temperature | -40 °C – +60 °C |
Maximum installation altitude for nominal operation | 1000 m |
Derating above 1000 m | 1%/100 m – max. 2000 m with UL 1%/100 m – max. 4000 m without UL |
Maximum relative humidity | 95% (condensation not permitted) |
Unit designs | IP20/NEMA 1 IP55/NEMA 12 K IP66/NEMA 4X |
