Revcon Harmonic Filter Install

During the annual Power Factor Correction maintenance at a large Salad Factory in the south of England, it was found that the standard PFC on site was failing.

 

An instantaneous load and check carried out by on service engineer show levitated harmonics on the supply, which we suspected was the cause of the capacitor failures.

A week-long power quality analysis was conducted and the results showed that the VTHD was around 6.5% and elevated higher when the standard PFC capacitor banks were in operation.

 

It was concluded that to help reduce these harmonics, as well as the inductive load on the supply an Active Harmonic Filter would be the best solution.

We designed and built a 350A ADF using 2 x 100A  and 1 x 150A REVCON filter modules which we built into a custom enclosure along with additional forced air ventilation and a built-in HMI display.

The filter was also set to a power factor of 0.98 to help reduce the inductive load using its built-in capacitor banks.

 

Using the existing cable infrastructure and switch we were able to remove the old PFC equipment and install the new ADF without any disruption to the sites supply.

After commissioning the Active filter reduced the sites VTHD from 6.5% > 3.2% and the iTHD from 22.5% > 12.2%, along with a Power Factor of 0.98i.