Recent Blogs

Industrial Drive Service Inc. is a drive systems integrator business based in Hensall, Ontario. Most of our projects involve a motor, drive and a programmable logic controller. One of their niche markets is hoist controls used in the mining industry. In 1995 they were...

In a common AC induction motor, a magnetic field is induced in the rotor and the power is supplied directly to the stator. The power used to induce the magnetic field in the rotor is commonly known as reactive power since it does not produce work. The power supplied...

What is Power Factor? Power factor (PF) is a measure of system electrical efficiency. A business that does not manage their PF will likely suffer from financial and operational losses as a result. PF correction is the process of bringing PF closer to 100%, or unity....

In the early days of variable speed drives, Nema rated motor contactors were used. The more economical IEC rated contactor had not been introduced. As variable speed drive technology improved and sequencing the opening of the contactor to coordinate with the...