Improve The Power Factor; Connect An Ac Reactor Or A Dc Reactor - YASKAWA GA700 Series Technical Manual

Ac drive for industrial applications

Hide thumbs Also See for GA700 Series:

Table of Contents

Improve the Power Factor

AC reactors and DC reactors decrease surges in current and improve the power factor on the input side of the

Connect an AC reactor or a DC reactor to the input side (primary side) in the these conditions:

• To decrease harmonic current or improve the power factor of the power supply

• When there is switching of phase advancing capacitor

• With a large capacity power supply transformer (600 kVA or more).

• You can use an AC reactor and DC reactor together.

• When you connect a thyristor converter (for example, a DC drive) to the same power supply system, use an AC reactor.

• The main circuit terminal block for the drive and the terminal blocks for the AC and DC reactors come in different shapes. Correctly

prepare the ends of the wiring.

• Ground the AC and DC reactors (option) on the back of the mounting base. Remove all paint from the mounting surface of the control

Connect an AC Reactor

A - Power Supply

Connect a DC Reactor

When you install a DC link choke, remove the jumper between terminals +1 and +2. If you will not use a DC link

choke, do not remove the jumper. Refer to

A - Power supply

YASKAWA SIEPC71061705H GA700 Series Technical Manual

C - AC reactor

Figure 3.75 AC Reactor Connection Example

for an example of how to wire the DC reactor.

D - DC reactor

Figure 3.76 DC Reactor Connection Example