Identify the sources of damaging heat. Typically outside the control panel, but can sometimes be included inside the enclosure. This equation includes all six surfaces of the enclosure . Evaluate the environment in which the VFD will be located and choose an appropriate enclosure.
Bigger size VFD is not always better - especially in torque control applications.
Smaller VFDs are approximately and as the VFD increases in size the percentage of thermal losses decreases to about .
Example: What is the estimated.
As with the material, the size of the enclosure (useful occupied surface area in m2) affects the inner temperature level. Up to for polyester enclosures. Avoids problems of condensation on the . Sizing – The size of the power wires and fuses that are going to the VFD should be sized to handle the overall load and voltage rating of system. Ground cables should be sized to the same size of the power wiring to again maintain the proper current.
Welcome to the Hoffman cooling selection tool. Enter the requirements of your application. The software will suggest standard cooling solutions such as air conditioners, heat exchangers, and air movers.
Bulletin 5— General Purpose Enclosures. For example if your motor is a . Yaskawa identifies it as NEMA FVFF (force ventilate fans, and filters) and it . For computers and power supplies, optimal cooling-air temperature and humidity differ. Ti = Maximum permissible ambient temperature inside the enclosure (°C) k = Heat transmission coefficient of the enclosure material (Wm -ºC -). Type 4X Lift-Off Cover, Aluminum.
Illustration Sheet and Catalog Number. He inspired and initiated many product innovations in this fiel leading for example to the market launch of ProOzon CFC-free cooling units and . White enclosure , outdoor rate size varies. Filtered forced air ventilation.
No comments:
Post a Comment
Note: only a member of this blog may post a comment.