Rockwell Automation 6000 PowerFlex Medium Voltage Variable Frequency Drive Installation Instructions - Manual (Page 39)

Rockwell Automation Publication 6000-IN006A-EN-P - April 2014 39
Drive Mechanical Installation Chapter 2
• An air inlet must be added to the drive room. The cross-sectional area of
this inlet must meet the ventilation requirements of all drives. Screens
must be installed in the air inlet.
• The air inlet must be at least 1000 mm (39.4 in.) above the floor.
• The air inlet and outlet must not be at the same side of the drive room.
Air Conditioning Sizing If the drive is located in an enclosed space, install air conditioners for each drive.
A general formula to calculate air conditioner power required:
Air Conditioning Size (tons)
This is for a general estimate. Refer to the actual heat loss data to calculate air
conditioning sizing. Contact the local Rockwell Automation office for actual
data.
Figure 25 - Airflow for Fixed-mounted and Drawout Cabinet Configurations
(1)
EXAMPLE For a 1000 kW drive with 96.5% efficiency:
tons of AC required
(1) Top ducting shown by contractor.
DriveRating kW
 
1 DriveEfficiency –
  
3.5
-------------------------------------------------------------------------------------------------------------=
1000 1 0.965
·
–
  
3.5
---------------------------------------------- 10 =
Fixed-mounted Power Module Configuration Drawout Power Module Configuration