50 hp Single Phase DC Reactor, 110A

Q1: What specifications of DC link reactor do I need for my motor drive?

Choosing the appropriate specifications of DC link choke requires comprehensive consideration of the rated voltage, current, and application scenario of the drive system. Generally, the DC reactor current rating should be matched to the rated current of the frequency converter or inverter, and an appropriate inductance value should be selected (usually 2%–5% of the DC circuit impedance). Overload capacity, temperature rise rating, and installation method should also be considered. If the system has high harmonics or poor grid quality, the inductance can be appropriately increased to achieve better filtering and protection.

Q2: How to select a suitable DC link reactor based on current/voltage?

First, match the voltage rating (usually DC 500V-1200V); second, select dc smoothing reactors according to the current, reserving a 20%-50% margin based on the system's maximum current; finally, confirm the inductance (generally, the higher the power, the smaller the inductance), and consider the insulation class in conjunction with the ambient temperature.