VFD Rooms

VFD (Variable Frequency Drive) Rooms.

Variable frequency drives are being widely used to control the speed of AC motors, like conveyor systems, blower speeds, pump speeds, machine tool speeds, & similar applications that require variable speed with variable torque. VFDs are required to operate round-the-clock thereby emitting significant amounts of heat as an effect of its sensitive electronic circuit design.

Wide number of researches has proved that VFD saves energy by controlling motor speed; also, it can improve motor power factor without affecting motor efficiency. For variable speed drives that are deployed in conditioned areas, the losses from the drive become a part of the total cooling load to decide the air conditioning system capacity. A very interesting part of heat emission of VFD is that
these VFD are highly efficient i.e. 95-97% (generally) but considering medium size or large drive size i.e. 200kW to 1000 kW, even 3% heat loss also yields almost 15kW to 30kW (500 ~ 1000 kW) heat load from each drive. As VFDs are packed with electronics and mechanical parts, due to which an appropriate cooling mechanism is of utmost important factor for a smooth operation & drive
longevity.

We at AB3S Solutions have partnered with Vertiv Energy (Formerly Emerson Network Power) to provide Precision Air Conditioning Solutions for above needs. The product typically used in VFD Rooms is PDX machine.

The Liebert® PDX direct expansion cooling unit is equipped with the most advanced industry technology, guaranteeing precise cooling of data centers and server rooms.

It comes complete with R410A refrigerant which allows the unit to reach significant levels of efficiency. The Liebert PDX range also includes new generation Liebert EC Fans 2.0, thus ensuring top energy efficiency. The complete unit design has furthermore been optimized with enhanced heat exchangers, delivering high levels of overall efficiency and cooling capacity. In addition, Liebert PDX also includes unique Digital Scroll technology, making it the ideal, scalable cooling system able to expand with evolving business needs. The Digital Scroll modulating capability greatly contributes to the efficiency levels reached by Liebert PDX with a 50 kW unit (inclusive of Digital Scroll) consuming as little as a 10 kW unit, thus delivering advantageous energy savings.
Liebert PDX range is available from 15KW to 120 KW of Cooling Capacity.

PDX

The Liebert® PDX direct expansion cooling unit is equipped with the most advanced industry technology, guaranteeing precise cooling of data centres and server rooms.

It comes complete with R410A refrigerant which allows the unit to reach significant levels of efficiency. The Liebert PDX range also includes new generation Liebert EC Fans 2.0, thus ensuring top energy efficiency. The complete unit design has furthermore been optimized with enhanced heat exchangers, delivering high levels of overall efficiency and cooling capacity. In addition, Liebert PDX also includes unique Digital Scroll technology, making it the ideal, scalable cooling system able to expand with evolving business needs. The Digital Scroll modulating capability greatly contributes to the efficiency levels reached by Liebert PDX with a 50 kW unit (inclusive of Digital Scroll) consuming as little as a 10 kW unit, thus delivering advantageous energy savings.