A sudden pressure change due to utility power disturbance can have dramatic consequences on sensitive equipment. The engineering challenge is therefore to offer a power supply solution that will provide maximum reliability to either bridge to an alternative source of power, or in a controlled way ramp down the pump without any risk for sudden pressure losses.
AC UPS and DC Motor based-backup systems are not optimal for reliable backup solutions of rotating loads. KraftPowercon’s Uninterruptible Motor Drives solution UMD™ is the most effective solution to secure pumps and other motor loads.
Supplying motors with the correct power during critical operation means the difference between profit and downtime costs, the difference between running machines and mechanical failures, and the difference between planning ahead and planning urgent field service.
UMD™ systems utilize proven and field tested uninterruptible power supply principles that achieve unmatched reliability.
UMD™ utilizes field-proven, high-quality VFD’s. All the advantages of VFD operation also applies to the UMD™. That includes: limiting start currents, starting at maximum torque, precise speed control, energy savings etc. At Direct On Line start of an induction motor, the inrush current can be up to 9 times of the nominal current. The UMD™ with its internal VFD solves the problem and realize the motor’s full potential.
The UMD™ system is designed to remove all Single Points of Failure. Traditional UPS systems must be doubled or excessively oversized to achieve the same safety level.
UMD™ is delivered as one complete MCC-unit. Type tested according to IEC, UL, CSA and other applicable standards. The system has single or redundant mains input breakers, battery charger, AC and DC busbars, and the required motor drive outputs. In addition, it can be extended to backup all AC and DC auxiliary loads.
As a result of this several complex engineering activities including battery sizing, power loss calculations, motor protection settings, fuse selectivity in distribution board, can be eliminated. It also allows for fast and straightforward installation and commissioning that can be performed by local technicians.
David Persson - +46(0)470 705 200
Kaj Landström - +46(0)470 705 200
Andrew So - +46(0)470 705 200
Complete system for uninterruptable supply of AC & DC voltage for indu...