3.5.3 Starting, stopping the cooling system 42
3.5.4 AC redundant fans - operating principles 43
3.5.5 EC redundant fans – operating principles 44
3.5.6 Air flow overview (AC and EC fans) 45
3.5.7 Monitoring the air pressure 46
3.5.8 Adjustable parameters 47
3.6 Cabinet design 47
3.7 Door locking system 48
3.8 Arc resistant design (optional) 49
3.8.1 Internal arc classification (IAC) 49
3.8.2 Associated protection requirement 49
3.9 Space heaters 50