EMA has a number of the Medium Voltage MV VFD Siemens Robicon Perfect Harmony liquid water cooled cells in stock for immediate shipment.
These MV medium voltage Siemens Robicon Perfect Harmony VFD liquid water cooled cells are very difficult to find in an emergency, and anyone using the water cooled Robicon MV VFD would be wise to have spares.
These Robicon MV VFD liquid water cooled cells will fit units in the 4500 to 5500 HP range.
Medium Voltage MV VFDs in the United States are most commonly used with 4160 volts as an input, but can sometimes be found with 2400 and even 6000 volt inputs. EMA has provided units with 13.8 KV inputs, but in general, 4160 is the most common input voltage for medium voltage MV VFDs.
In addition to these liquid water cooled Siemens Robicon Perfect Harmony cells, EMA stocks large quantities of the more common air cooled Robicon power cells. We repair the Siemens Robicon MV VFDs (Perfect Harmony) routinely, and additionally, provide repair parts to users of the Robicon MV VFDs. In fact, we go all over the United States and internationally repairing the Siemens Robicon MV VFDs and others.
In addition to liquid water and air cooled cells for the Siemens Robicon Perfect harmony MV VFD, EMA has two 1750 HP 4160 volt reconditioned VFDs for sale or rental. (We also have a number of 1000 HP Toshiba MV VFDs for rental)
The Siemens Robicon Perfect Harmony drive is known for its cell bypass technology, whereby the MV VFD can continue to operate with a blown cell, albeit at reduced capacity. It also gets a lot messier from a motor and power line noise perspective, which can be an issue in some circumstances.
Along with carrying the Robicon power cells in stock, we repair and test them. Call 770-448-4644 to discuss that, or hit any of the contact methods on the right of this page.
No One, anywhere, is better at drives than we are! No one!