Principles
Miltys is dedicated to solving power quality problems for users. Active power filters have unprecedented comprehensive power quality management capabilities. APFs can simultaneously filter harmonics within 2-50 times, and the filtering capacity can be as high as 97% or more. The full compensation time for harmonics under step changes is less than 10ms.
APFs can be operated in parallel at the same time. The efficiency of the whole machine is more than 97.5%. It is fully applicable to various situations in industrial and civil fields. It is the best solution for nonlinear load harmonic control and reactive power compensation.
The APF collects the current signal in real time through the external current transformer, and separates the harmonic part through the internal detection circuit. The IGBT power converter generates the compensation current with the phase opposite from and the magnitude same as the harmonics in the system, and realizes the function of filtering the harmonics.
The APF output compensation current varies accurately according to the dynamics of harmonic amount of the system, so there is no overcompensation problem. In addition, the APF has an internal overload protection function. When the harmonic amount of the system is greater than the filter capacity, the device can automatically limit the output to 100% of the rated capacity without overload .
Model selection
Product model definition
| Stand-alone current rating | 35A | 50A | 75A | 100A | 150A | 200A | 250A | 300A | 400A |
| Voltage rating | AC400V～AC690V |
| Size mm (width * depth * height) | 365*200*508 | 385*200*586 | 445*220*625 | 800*600*2200，800*800*2200，800*1000*2200，1000*1000*2200 |
| Installation method | Wall-mounted type | Cabinet type (other sizes can be customized) |
| Protection level | IP20, other IP levels can be customized |
