January 19, 2021
Modern drive technology has enhanced the performance of industrial motors. Decreased switching time of the electronics in Variable Frequency, Pulse Width Modulation or Vector drives, means specialized cables connecting the drive unit and the motor become critical to the performance of these systems. Nexans DriveRx cable is specially constructed to meet the challenges of modern adjustable speed drive systems.
Drive manufacturers recommend the Nexans cable construction, with the corrugated continuous aluminum sheath and 3 bonding conductors.
The three conductor construction virtually eliminates magnetic fields outside of the cable, so induced voltage from one power cable to another or cross talk to control/instrumentation cables is also reduced. The continuous aluminum sheath (as opposed to interlocked armour) acts as an effective shield for high frequency "noise" that may still be produced and could affect adjacent control and instrumentation cables. This sheath, in combination with the three grounding conductors, also acts as a long-term low resistance path to the ground. This will eliminate standing voltages that may be created on the motor frame and also reduce bearing currents due to this standing voltage or to common mode voltage.
APPLICATION
Nexans DriveRx cable is recommended for industrial, commercial and utility installations including outdoor wet locations. DriveRx can be installed in tray, conduit or direct buried, strapped to walls or surface mounted. Although DriveRx can be installed in tray or conduit, mechanical protection is NOT required, as DriveRx is impact and crush resistant. Cable temperature rating is 90ºC to -40ºC. DriveRx is flame, oil and UV resistant. Certification to standard C22.2 No. 174 allows installation in hazardous locations.
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Editor's Pick: Featured Article
Breweries are known for transforming malt, hops, and yeast into beer in gleaming brewing kettles and large fermentation tanks linked by numerous pipes.
Over the centuries, the equipment for mashing, lautering, boiling, and fermenting beer according to carefully guarded recipes has been steadily perfected.
The chiller is the heart of the brewery
One of the most important parts of the brewery, and perhaps the least visible, is the chiller. The fermentation temperature of the beer is crucial, which means that the heat generated by the yeast fermentation must be carefully controlled by the chiller.
If the beer ferments at too high a temperature, the yeast can produce a variety of undesirable aromas that ruin the beer.
According to Justin Thomas, President of G&D Chillers, based in Oregon
"The chiller is the heart of the brewery. Owners invest not only a lot of money in the brewery and brewing equipment, but also a great deal of time in the production of beer. But if the chiller fails, all that goes out the window."
Partnerships to keep pace with growth
Thomas says that growth at G&D Chillers has been exponential over the past 15 years. To continue this rate of success, the company had to look for new ways to meet customer demands for reliable, state-of-the-art chiller options.
For example, G&D Chillers recently teamed up with Siemens and the global distribution and supply chain solutions company WESCO to meet these needs and stay ahead of the competition. "We're still a small manufacturing company, but big enough to produce some technically advanced equipment," says Thomas. "We've always been service-oriented and always stood by our equipment, no matter what the problem. We get the same kind of support and service from Siemens that we give to our own customers."
Read more here
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