What’s a Data Bus Cable? Buyer’s Guide: All you need to know about Bus Cables
The field of electronics continues to grow and develop with each dawn. This is all owed to advanced technology and availability of raw materials with excellent properties. The fast development of aviation, aerospace and electronics industries and defense engineering has seen an increase in demand for signal transmission cables that are higher cable to small, lightweight, high temperature and anti- electromagnetic interference. The today automation world needs industrial networking solutions that are fast and reliable. To do this Data Bus Cables come into play.
Think of a data bus cable as any other ordinary bus. It is a collection of wires that transmit signals from a particular part of the computer to another. With the evolution of computers and other pieces of hardware, there has emerged various kinds of data bus cables. When referring to personal computers, the word bus normally means internal bus. This kind of bus connects the internal components of a computer to the CPU and the main memory better than computer cables. Another kind of bus that has also come into play is the expansion bus. This allows expansion boards to get access to the main memory and the CPU.
Initially a data bus cable could transmit data that was 32 bit or below. Now days, thanks to advanced technology, things have changed and a data bus cable could transfer greater amounts of data. Apart from transferring data between the Central Processing Unit (CPU) and main memory, a data bus cable may also transfer information between two or more computers. Because of its high packaging density, design flexibility and weight savings data bus cable is used in space defense, aerospace and marine data bus applications.
Data bus cable includes insulated conductors, filling cores, shielding layers and sheaths. The formation of every insulated conductor is done by extruding an insulating layer outside an inner conductor. Then the two insulated conductors together with the two filling cores are symmetrically arranged and stranded to be bundles. The sheaths and the three layer structured shielding layers are arranged outside the insulated conductors and the filling cores.
Data bus cables are formulated in accordance to the mil-std- 1553 standard. The cable has a conductor that works to transmit data signal within the computer or between two computers. The conductor has been made of a high strength silver coated copper alloy. As the environment in which the cable operates in requires a lot of bending, the copper plays a huge role in ensuring it bends with ease in accordance to the needs of the user. The copper conductor also ensures easy installation and termination of the cable. Copper is well known for good transmission of signals and electricity and thus why it is highly considered as a conductor. You will find various kinds of data bus cables in the market. They are 22, 24 and 26 AWG screened twisted pair cable. Each has its own use and thus you need to go for the one that matches your needs. 24 AWG cables are a good compromise between the electrical, space and weight characteristics while 26 AWG cables provide weight saving.
The aerospace and marine environment that data bus cables work often lays all manner of stress on cables and as such, cables utilized need to be of very high resistance to all kind of stress. Data bus cables are insulated with polytetrafluoroetheylene (PTFE). PTFE insulation provides great resistance to electro- mechanical chemical- mechanical stress. The insulation also provides a low coefficient of friction and excellent thermal properties allowing it to be used in areas with extremely high temperatures.
The jacketing and insulation material ensure that the copper conductor is fully protected against all sorts of damage, physical or chemical. This helps the cable to last longer and perform as per the expectations of the end user. Just like the insulation, the jacket is also made of PTFE.Other data bus cables have a polyimide (PI) insulation which also has possesses high mechanical strength, low friction coefficient and high temperature stability.
A data bus cable has a three shield structure that is designed to improve the ability of the product of anti- electromagnetic interference shielding attenuation products reach 100dB. Depending on the type of cable, you will find others with overall flat shield and others with flat and round braid shield.
The sheath is made of insulated irradiation cross linked X-EFTE materials. The materials go a long way in ensuring the cable is not inn anyway affected by radiation. Its radiation performance goes up to 1 * 108 Mrad.
Features and benefits of a data bus cable
Data bus cable has a number of benefits and that is why it is increasingly used as a reliable cables for aerospace, marine and electronics industries. To begin with, it can operate in either wet or dry locations. This is thanks to the fact that it has high temperature resistance and low temperature resistance. Its temperatures can go as high as 2000 C up to a low of -1000 C.
Because the cable is often moved about during and even after installation, its weight is a crucial factor to be considered. For this reason it has been uniquely designed to be light weight. The weight can be cut down by 20% in relation with the FEP material used.
This cable is known to possess excellent flame retardant properties. As mentioned earlier, this all owed to the material used in the insulation and jacket material. The PTFE has excellent properties making the cable highly resistant to flames. The oxygen index of a data bus cable could go up to 40.
As a data cable is used to transmit signals it needs to operate in an environment that has no electromagnetic forces. Just as the case wire tray cables and building wire, Electromagnetic forces interfere with signals and as such may hinder the cable from fully carrying out its performance. To curb this scenario, the cable has been uniquely designed in such a way that it is has excellent electromagnetic compatibility. The double layer knitted structure has anti- electromagnetic composite films which greatly improve the anti- electromagnetic interference capability of the product. This also ensures that signals are transmitted in a reliable way.
There are a lot of marine aerospace cables and if not careful you might go for one that does not match your needs. For easy identification therefore, data bus cable can be differentiated with a stripped color tape put under a jacket that is transparent. This tape is resistant to abrasion allowing you to use the cable for a long period of time without it deteriorating.
All data bus cables are required by law to meet the MIL-STD-1553 standard which was established by the Air Force and USDD and spells out the physical, electronic and operational properties of serial data buses.
Data bus cables are required to adhere to the pr EN 3375 standard. This one ensures that there is no bad network connection to stall connection service. There are a number of data bus cables and each has its own specifications to adhere to. The specifications may include; MIL-C-17/176-00002, SSQ 21655 and pr EN 3375.
- The temperature ratings range between -100 C to 2000 C
- The voltage ratings range between 600V to 69kV
- The average density of fluorine plastic is as small as 1.7 g/cn
- The cable has an oxygen index of 40
- The electromagnetic interference shielding attenuation go up to 100 dB
- The resistance to radiation is 1 * 108 Mrad
- It has a nominal impedance of 120 ohms
Certification and approvals
For the sake of safety it is always prudent to go for products that are have been tested and certified by various international agencies to be safe. Before making a purchase decision when shopping for a data bus cable, you must ensure that it is in compliant with all the necessary international standards. If it does comply with the required standard, it is wise that you do not go for it. One place you can be sure to find such high quality certified products is Nassau Electrical, don’t look any further.
As the environment in which a data bus cable is likely to operate in is likely to have high temperatures, the cable is normally taken through UL flame test: UL 1685 UL loading. Other certifications are as follows;
- NEC/UL specification
- CM CEC/C (UL) specification
- AWM specification ULstyle 2464(300V 800 C)
- CE EU mark
- EU CE directive 2002/ 95/ EC (RoHS)
- EU directive 2003/ 11/ EC (BFR)
Types of Data Bus Cables
As earlier briefed there are various kinds of data bus cables all performing different duties. Due to high transmission rate and data flow, standard data bus cables are no longer sufficient. The following are the types of data bus cables you may come across in the market;
- Interbus-S cables
- Interbus- Loop cables
- DeviceNet cables
- Profibus – DP cables
- Profibus cables
- Safety bus cables
- USB 2.0 cables
- Industrial Ethernet cables
- Hybrid field bus cables
Nassau Electrical is a supplier of all kinds of cables including data bus cables. We manufacture a wide range of these cables to meet all your needs. Our products include;
- Belden cable blue hose 9463 cable
- Belden cable CC- link cable
- Belden cable controlnet cable
- Belden cable devicenet cable
- Belden cable RS – 485 cable
- Belden cable foundation field bus cable
- Belden cable interbus-S cable
- Belden cable lonworks cable
- Belden cable profibus cable
Applications of data bus cable
Generally, bus cables are used for the purpose of digital signal transmission between sensors and corresponding display units. They are specifically used in aerospace industry, large ships, on- shore, oil drilling ships and UPS systems, even though it’s not a marine cable, it can function almost as well on shore. The cables are also used in the following areas;
Service entrance applications
- Primary and secondary feeders
- Generators to transformers
- Generators to switch gear
- Transformers to switch gear
- Switch gear to switch gear and MCCs
- MCCs to large motors
Why go for data bus cable?
Data bus cables are very flexible. They adapt easily to most unexpected indoor and outdoor occurrences that may unfold during construction. They come in a compact design and the bend radius allows the data bus cable to maneuver around and properly fit in the lowest clearance applications.
Before embarking on any installation process or construction, it is important to use the right product from the right people to have an excellent end product. Going for the right product builds the confidence of your customers and thus growing your business to the next level. Data bus cable is a crucial product in the modern world. Its use has continued to grow more so in the aerospace, electrical and marine industries. Its flexibility, high resistance to abrasion and other unique properties has seen it become the go to choice for most people.
Where to get a data bus cable
Data bus cables have now become a household name and can be found in most electrical supplier outlets. If you are not keen enough you may fall for a product that is not genuine. This is because most suppliers do not stick to the required specifications during the manufacture of these cables. Though they may seem to meet your needs, their durability is often questionable. At Nassau Electrical Supply, we put your needs and desires beforehand. We have a team of experts who have years of experience and knowledge in matters data cable. Unlike a good number of our competitors our cables possess excellent performance properties, less expensive, easy maintenance, are easier to install and are very reliable.
With a data cable from Nassau Electrical Supply, you can never go wrong. Do you have any query regarding this product or any other from our brand? We will be delighted to address them fully. Feel free to let us know how this information has impacted you. Chat live with our support team on our website today.