Output reactors Siemens

Обзор

Output reactor

Output reactors reduce the rate of voltage rise (dv/dt) and the height of the current peaks, and enable longer motor cables to be connected.

Owing to the high rates of voltage rise of the fast-switching IGBTs, the capacitance of long motor cables reverses polarity very quickly with every switching operation in the inverter. As a result, the inverter is loaded with additional current peaks of substantial magnitude.

Output reactors reduce the magnitude of these additional peaks because the cable capacitance reverses polarity more slowly across the reactor inductance, thereby attenuating the amplitudes of the current peaks.

When using output reactors, the following should be observed:

• Max. permissible output frequency 150 Hz
• Max. permissible pulse frequency 4 kHz
• The output reactor must be installed as close as possible to the Power Module

Интеграция

Available optional output reactors

S = Lateral mounting

Технические данные

¹⁾ On the rating plate of the reactor the current is specified for the duty cycle with high overload HO, which is lower than the indicated value for the duty cycle with low overload LO current of the Power Module.