EMA has acquired 9 1000 HP medium voltage Toshiba T300MVI VFDs. We are refurbishing and testing the units, which will carry a full warranty. We expect to have the first two ready to ship on or about November 20th.
EMA began as a service company, doing drive and VFD service for a national customer base. At first, we rarely stocked any VFD equipment, although we did usually carry VFD parts. However, we now stock a large number of both low voltage and medium voltage VFDs, available for immediate shipment.
EMA repairs Siemens Robicon Perfect Harmony medium Voltage VFD s. We have the power cells in stock and have a great reputation in this field.
The concept of using variable frequency drives to reduce energy costs is well established. Depending on which survey you read, around 80% of VFD s sold are sold, at least in part, for the purposes of saving energy. No serious person questions the fact that AC Drives save energy.
EMA has always been privileged to have service relationships with some of the finest drive companies in the world. To list a few.. we have service relationships with WEG, with Toshiba, with Hitachi, with Danfoss, with LTI Servos, with Yaskawa, and most recently, with LS Industrial Systems, or LS Drives.
People operating the Siemens Robicon Perfect Harmony medium voltage VFD often don’t realize the need for replacing the bus capacitors after 7 years of operation. The chance of a bus capacitor failure increases exponentially after 7 years of operation due to degradation of the electrolyte and dielectric material. The situation is exacerbated by increased heat. If the bus caps fail, it can result in damage to the input rectifier section of the cell and the IGBTs, resulting in the line…
Variable Frequency Drive applications are rarely identical, even though at first glance, the VFD applications may look similar.
VFD s can be provided either in a free standing NEMA 3R outdoor enclosure, OR, in what’s termed an “E-House.”
VFD s in mining operations are becoming more and more common. EMA has both sold and serviced the mine VFDs.
EMA carries a variety of used and refurbished VFDs that are available for immediate delivery. At the moment we have up to 300 HP ready for shipment, but the used inventory varies almost daily.
