vfd

Toshiba Drive Assembly

        We are in the process of working on a project at a major University. What’s interesting is what they’re going to be using the equipment for once we’re completed. The Toshiba Medium Voltage Drive assembly has been put in place. It is 27 feet long and 8 feet tall. The unit is fed with 13,999 V power that reduced to 4160V through a built-in transformer that powers power to the 4160V VFD section of the unit. Horner Field Service Techs Rick Collins and Gary Anderson were able to set and connect the equipment on site with the [...]

Toshiba Drive Assembly2021-01-10T17:23:47+00:00

Installing VFD Drives On Vertical Pumps and Structural Vibration Problems

By: Nelson Baxter It is well known that the installation of VFD drives has the possibility of introducing vibration problems on rotating equipment.  When a machine runs through a wide speed range the probability of operating at or near a resonance is significantly increased as compared to a machine operating at a single frequency. VFDs are generally utilized to slow the speed of a machine down to match the load, thus saving energy and allowing better control of the process.  The inherent nature of the design of vertical pumps means that there is a large mass (the motor) sitting on top [...]

Installing VFD Drives On Vertical Pumps and Structural Vibration Problems2016-11-01T19:04:39+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 Plant2020-10-02T18:15:01+00:00
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