| Harmonic Mitigation | Vertiv™ Liebert® AF4 assures the plant current THD to stay below the limits specified by the IEEE 519-1992 with full dynamic compensation |
| Power Factor Control | Vertiv™ Liebert® AF4 ensures unity power factor operation of the plant. Fully dynamic compensation adaptive to load changes. |
| Wide Range of Harmonic Selection | Ability to cancel all odd harmonics up to 51st order. These harmonics are individually selectable/programmable with on limitation. |
| Current Balancing | Vertiv™ Liebert® AF4 assures the plant current drawn from the EB to be balanced and sinusoidal. |
| Optimum Design | Light in weight, compact in size, quiter in operation, and best in the performance. |
| No Prerequisite | Vertiv™ Liebert® AF4 in general, does not require the installation of input chokes with VFDs, as long as the load current THD is below 40%. |
| Energy Efficiency | Vertiv™ Liebert® AF4 consists of an intelligent on the fly real-time internal switching loss minimization technique to enhance the internal energy |
| Neutral Current Compensation | A 3P4W Vertiv™ Liebert® AF4 fully supports the load neutral current locally, and assures zero neutral current on the source/EB side. |
Vertiv proudly introduces its first product line-up "Vertiv™ Liebert® AF4" an Active Harmonic Filter (AHF) to cater to the present industrial needs.