Belden VFD cables
January 2012
Enclosures, Cabling & Connectors
Variable frequency AC motor drive output cables are subject to harsh operating environments characterised by high voltage spikes, high noise levels and adverse environmental conditions. Typical cabling solutions for this application have been unshielded tray cables, single-conductor lead wire installed in conduit or continuously-welded armoured cable. These solutions suffer from complex, costly installation and potential reliability problems. Belden VFD cables were designed and engineered to overcome these challenges.
The challenge of VFD applications
VFD cables carry power from AC drive systems to AC motors. As a result, these cables must handle not only the overall high power levels of the pulse-width modulated signals, but also the extremely high voltage which can occur when standing waves develop on the conductors. This high voltage can cause corona discharge between the conductors of conventional cables, causing damage not only to the cabling itself, but also to the motors, bearings, drives and related equipment. In turn, this damage can cause failure of the entire drive system, resulting in costly production downtime.
Limitations of conventional VFD cables
In addition to experiencing failures due to corona discharge and adverse environmental conditions, conventional cabling is difficult and expensive to install. Armoured cable and lead wire in conduit are cumbersome and heavy and require extremely large installation bending radii, making installation both time-consuming and labour intensive. Yet they still do not solve noise and corona discharge problems, nor do they effectively address the high levels of noise generated by VFDs.
Belden’s series of VFD Cable in gauge sizes from 16 to 4/0 provides the robust construction required to deliver superior electrical performance and reliability in the most demanding industrial environments.
For more information contact Greg Pokroy, Jaycor International, +27 (0)21 447 4247, <a href=mailto:greg@jaycor.co.za:< greg@jaycor.co.za</a>, www.jaycor.co.za
Further reading:
Electromagnetic interference filters
Vepac Electronics
Enclosures, Cabling & Connectors
Electromagnetic interference filters suppress unwanted noise in electronic systems, ensuring devices meet compatibility standards, and operate reliably in environments from medical equipment and radio circuits to industrial power converters and renewable energy systems.
Read more...
Ready-to-use hybrid cables
igus
Enclosures, Cabling & Connectors
igus South Africa is expanding its readycable hybrid range, combining power and data transmission in a single line to simplify automation cabling. The latest additions include harnessed cables for Siemens Sinamics S210 drives and SEW-EURODRIVE motors with MOVILINK
Read more...
Cutting-edge plastic e-chain protects cables in cleanrooms
igus
Enclosures, Cabling & Connectors
igus has developed the C6 cleanroom energy chain with an e-spin guide system that allows abrasion-resistant cable travel over distances of up to 30 metres without generating the microparticles that standard energy chains produce.
Read more...
Energy chains transform Durban ship loader productivity
igus
Enclosures, Cabling & Connectors
South African Bulk Terminals has installed a 140 m opposing energy chain system from igus to improve the management of cables used in the operation of two of its massive ship loaders.
Read more...
Rittal’s flat-pack enclosure solution
Rittal
Enclosures, Cabling & Connectors
The launch of Rittal’s FR IT flat-pack enclosure earlier this year marked a milestone for the company, introducing the local market to a high-capacity, top-tier IT enclosure in a convenient and cost-effective flat-pack format for the first time.
Read more...
Reliable connectivity for the food and beverage industry
LAPP Southern Africa
Enclosures, Cabling & Connectors
The food and beverage industry operates in one of the most demanding industrial environments where hygiene, efficiency and reliability are critical to daily operations. To support these growing industry demands, LAPP has introduced a new generation of sensor cordsets designed to perform in challenging food and beverage environments.
Read more...
Innovative cable entry for maximum flexibility and efficiency
Enclosures, Cabling & Connectors
icotek is setting new standards in terms of flexibility, efficiency and space-saving with a new series of cable glands.
Read more...
Safety-critical fibre optic systems in mining
Omniflex Remote Monitoring Specialists
Enclosures, Cabling & Connectors
Omniflex highlights the importance of fibre optic technology in in enabling systems in the mining industry to transmit shutdown commands reliably over tens of kilometres and verify that they have been executed.
Read more...
Compact integration of 3A and 4A connectors
Enclosures, Cabling & Connectors
With the new AT-HA grommet, icotek is expanding its innovative IMAS-CONNECT adapter system with a forward-looking solution for industrial use.
Read more...
Space-saving I/O module for control cabinets
ifm - South Africa
Enclosures, Cabling & Connectors
The IO-Link I/O module from ifm simplifies integration of sensors and actuators with conventional wiring in the control cabinet as well as in field applications with low IP protection class requirements.
Read more...
printer friendly version