Reduced consumption of energy, increased production and extended life of equipment are some of the reasons due to which VFDs (Variable Frequency Drives) are commonly used in commercial environments. However, if a workspace is dusty, dirty, wet or humid, these drives cannot be left exposed to ensure that it functions flawlessly. A VFD panel is used to cover these drives at such workspaces.
Let us have a look at what makes these panels so useful and what are these panels made up of.
What is the use of VFD panel?
A VFD panel allows you to keep all the different components in a single panel. It protects the electrical components from dirt, dust, and other harsh weather conditions. Moreover, it is a complete control solution which enables harmonic filtering, bypass, and a lot more.
What are VFD panels made up of?
VFD panels can accommodate a variety of components, and some of the most common ones are mentioned below-
• VFD– The main component of a panel is the VFD which can vary in horsepower, FLA, voltage, and many other specifications. Some of the panels feature redundant VFDs to avoid failure.
• Harmonic filters– These filters effectively reduce the harmonic distortion
• Line reactors– 5% or 3% line reactors to reduce the harmonic distortion
• Bypass– This ensures that the system continues to function even if VFD fails
• Circuit breaker– It protects electrical circuit from short circuit or overload
• Modem– Used for communication
• Programmable logic controller (PLC)– It enables advanced operations
• Surge protector– To offer protection from sudden voltage spikes
Apart from these, VFD panels also feature AC or another type of cooling units, soft starter, motor overloads, motor starters and heaters to prevent condensation.
What are NEMA ratings of VFD panels?
Variable frequency drive panels are rated on the basis of their resistance levels. The standard for rating these panels was created by NEMA (National Electrical Manufacturers Association) and some common panel ratings are-
• NEMA 1– Panels for indoor use and general purposes
• NEMA 3R– Ideal for outdoor use as they as weather-resistant
• NEMA 4– Watertight panels for outdoor use
• NEMA 4X– Watertight and corrosion-resistant for harsh environments
VFD panels are available in several variations to ensure that one can choose a panel which perfectly suits their application. While choosing a panel supplier, choose one that deals with multiple drive manufacturers. Also, make sure that the manufacturer is reliable so that you save yourself from unforeseen expenses later. Lastly, good and credible manufacturers also provide customised panels to make sure it answers to the needs of your facility specifically. And with better knowledge about VFD panels, go ahead and get one made for your company.
