coolblue

Slurry Pump Project

We have a local gravel pit and asphalt operation near our Springfield OH repair shop. Over the years, we have built a solid relationship with this customer, doing field service, motor and mechanical repairs. This project started in September of 2016 when Dave Whited and Karl Hoppe met with the corporate engineer and local management about ways to improve power factor. Initially, we looked at PF correction capacitors and then into AC drives as a way to improve power efficiency. The slurry system consists of three pumps – a fresh water pump, a sand pump, and a waste pump. All part [...]

Slurry Pump Project2019-09-03T15:59:21+00:00

52 to 2 Amps 1500 HP DC Drive Project With CoolBLUE

In September Horner was called out to a rubber manufacturer in Tennessee to measure common mode currents on a 1500HP DC Drive. The drive end gearbox had just failed. It was found that they had bearing fluting that went through the DC motor into the shaft of the gearbox and into the bearing. The DC drive was connected to the gearbox and that gearbox was connected to a mixer. It mixed raw rubber for the plant.  They measured that the amps were destructive and could cause damage by bearing fluting in the future and they would have the same problem all [...]

52 to 2 Amps 1500 HP DC Drive Project With CoolBLUE2019-09-18T15:36:46+00:00

CoolBLUE® Absorption Inductors Solve Severe Noise Issue at Ethanol Plant

An Ethanol plant in Michigan had experienced severe noise on their plant Distributed Control System, (which is Device Net) being generated by the installed VFD’S since the plant was built. The noise issue was a direct result of running all of the entire plant communication lines in the same cable trays as the power lines to energize their plant’s production equipment. The harmonic line distortion created by the VFDs required a minimum of 8 units that had to be manually started at any given time. Since this is a Hazardous and Explosion Proof area the customer was extremely concerned for the [...]

CoolBLUE® Absorption Inductors Solve Severe Noise Issue at Ethanol Plant2016-06-10T18:54:44+00:00