Environmental factors when selecting a VSD

Environmental factors when choosing a VSD slogan

When installing a VSD, you should consider several environmental factors. The following should be checked:

Ambient temperature

environment

Altitude

Electromagnetic compatibility

Harmonic distortion

Minimum and maximum ambient temperature limits are specified for all VSDS. Avoiding extreme ambient temperatures extends equipment life and maximizes overall system reliability. If the VSD is installed in an environment where the ambient temperature is higher than the specified temperature, the power needs to be reduced. At lower pressure, the cooling capacity of the air is reduced. VSD derating exceeding 1000 m should be considered.

Electronic devices are sensitive to the environment. For example, moisture, dust, and temperature all affect the reliability of electronic devices. Reduced reliability leads to application downtime, which reduces productivity. Therefore, it is important to choose the right solution for the practical application. Basically, it's important to protect electronic devices from harsh environments. The best way to do this is to ensure that electronic devices are kept out of potentially harsh environments.

In most cases, you cannot directly see the critical degree of the environment, which mainly depends on four factors, namely the presence of pollutants, dirt, relative humidity and temperature. Most VSD manufacturers offer the following solutions to minimize environmental impact:

The VSD is mounted in a central cabinet using a long motor cable. In this way, the VSD is far away from critical environments

Install air conditioning in the control cabinet to ensure that critical environments are not exposed to VSD and other electronics. (Positive pressure).

Sometimes the VSD is fitted with a cooling plate. This means that you can place the VSD in the cabinet and the heat is transferred to the outside through the cold plate. Then keep VSD electronics away from critical environments

Use a VSD with a sealed housing. Today, VSD manufacturers offer enclosure protection grades up to IP66 / Nema 4X, which can protect electronic devices from the external environment and eliminate the cost of a separate enclosure

Ordering a VSD with a standard coating significantly improves protection against chlorine, hydrogen sulfide, ammonia, and other corrosive environments