Cheap price 4kW DC reactor for sale, copper or aluminum of material design, single phase DC output voltage 220V, 380V, 400V to 1200V is optional. Electrical DC line reactor can improve the input current wave caused by capacitor harmonics.

Specification:

Features
1. Improve the input current wave caused by capacitor harmonics.
2. Reduce and prevent rectifier bridge damage and capacitors.
3. Overheating due to a surge in current.
4. Improve the power factor and reduce the AC pulse of the DC bus.
5. Limit transient changes in system voltage.

Dimension (unit: mm)

Tips:  Why do I need a DC reactor?

Whether a DC reactor is required on the output side of the inverter input and output protection circuit should be determined according to the working environment of the inverter. When the following situations occur, consider using a DC reactor.
1. With switched reactive compensation capacitors or with thyristor phase-controlled load
For the case where there is a switch-type reactive power compensation capacitor screen or a thyristor phase-controlled load on the same power node providing the inverter's working power, a DC reactor should be used. This is mainly due to the instantaneous change in reactive power caused by the switching of the capacitor screen, which will cause a sudden change in the grid voltage; and the harmonics and grid waveform gaps caused by the phase-controlled load may cause harm to the input rectifier circuit of the inverter.
2. Unbalanced three-phase power supply
When the imbalance of the three-phase power supply to the inverter exceeds 3%, a DC reactor should be selected.
3. With power factor requirement
If there is a certain requirement for the power factor of the input terminal of the inverter, if it needs to be increased above 0.93, a DC reactor should be selected.
4. Large capacity transformer
If the inverter is connected to a large-capacity transformer, and the current flowing in the input power circuit of the inverter may cause damage to the inverter's rectifier circuit, a DC reactor should be used.