Input / Output Reactor

Input/output reactor

Product description
The function of the input reactor is to limit the voltage drop on the grid side when the inverter and converter are commutated, and to restrain the influence of harmonics on the DC speed regulating rectifier unit and the frequency converter, the rectifier unit and the rectifier feedback unit. And the decoupling of parallel converters; Limit the jump in grid voltage or the current shock generated by the operation of the grid system. The voltage drop selection of the reactor is related to the power of the grid and the apparent power ratio of the inverter. For DC speed regulation, it is recommended that the phase voltage drop of the reactor be 4% of the grid phase voltage. For the frequency converter, 2% is generally selected, and 4% is selected when the short-circuit power of the grid and the apparent power of the rectifier/feedback unit are greater than 50:1

The function of the output reactor is to limit the capacitive charging current of the motor connection cable and the rate of voltage rise on the motor winding. Used to passivate the steepness of the inverter output voltage (switching frequency) to reduce perturbations and shocks to power components in the inverter (such as IGBTs). And it can suppress the harmonic output of the inverter, and play a role in reducing the noise of the inverter. The size of the reactor inductance is calculated according to the length of the connecting cable, which is generally between 1-4% of the grid phase voltage.

Performance parameter
For systems up to 1KV. (if it is above 1KV, design it separately);
Voltage drop selection: 1%-4%; Rated insulation level 3kV-1min; Commonly used insulation class B, F, H;
In normal operation, the reactor temperature rise is not higher than 65K; Noise of reactor ≤65 dB;
The reactor can run for a long time at no more than 1.35 times the rated current; Three-phase inductance 0+5%, the balance does not exceed 3%;

Type description

Incoming reactor

Outlet reactor