Installation

In soft starter, the thyristors and microprocessors are used that can cause emission during operation. This emission can be reduced by using a by-pass contactor that ensures the system fulfills the compatibility requirement. Another advantage by using a by -pass contactor is that the total power loss is reduced, and thus it is not needed to have extra fans for cooling if the soft starter is enclosed.

The soft starter has following wiring connections:Main circuit connection: It contains the wiring of 3-phase source input, the output to motor, and the bypass contactor connection.External terminal connection: that is the wire comes from twelve external terminals which including control signal and analogue output signal.

The direction and distance of installation: In order to make sure that the soft starter be in good ventilation and heat dissipation, please install the soft starter in vertical direction, and be sure the space around the starter is enough. If the soft starter is installed in a box, please note that the ventilation is very good, as well as the above notes.

You will do better by focusing on the efficiency of your equipment how it is operated and the maintenance of your equipment than trying to tweak your pf by .03. But if you decide to install a capacitor bank anyway, you need to talk with your utility and make sure you do not cause any harmonic resonance and get them to help you with what your ROI will be. By the way, you may also have to install line reactors at each soft starter (and at all VFD locations) if you do not already have them.