Price (Per FT.)
Tray Instrumentation Control THHN/ PVC Shielded Pairs Overall Shielded (SPOS) 600V
For cables used in instrumentation, shielding is an appropriate feature. Bearing in mind how vital signal protection should be regarded, cable shields come in to keep off the distortions and data interferences from the environment.
Copper being one of the top best conductors plus many other features like high strength, low creep. These altogether make copper the best appropriate conductor for Tray Instrumentation Control cable. The copper is stranded to improve flexibility and conductivity of the wire. Such a stranded cable is suitable for complex circuitry installation and circuit branching.
A sure and sturdy Cross-linked Polyethylene (XLPE) insulation system provides protection to the cable conductor. This insulation which is flame retardant helps to reduce fire outbreaks in the control system circuitry.
A water tight and sunlight resistant Polyvinyl Chloride (PVC) jacket provides an overall protection to the entire cable. With so sure security, this cable can serve in outdoor applications.
• Temperature rating of 900C wet and dry
• Excellent abrasion and chemical resistance
• Oil resistant jacket
• Weather and Sunlight resistant
The cable is designed for control systems, power lighting and telemetering where heat and electrical stability is key. It has properties which qualify it for use in conduit, cable tray or direct burial. It is approved for Class 1, Division 2 hazardous area according to NEC Article 501 (TC) and fulfils NEC Article 336 applications.
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FAQ -Instrumentation cable
How to identify shielded tray cable POS (paired overall shield) and SPOS (shielded pairs overall shield)?
It is necessary that you are able to identify your cables so that you can make informed choices, especially when you want to place an order. First of all you must know about the wire size, which will tell you how big the conductor is and it is measured in AWG (American Wire Gauge). The insulation for the conductors will usually come in EPR or PVC.POS cables will have an overall shield while SPOS will have shielded pairs with an overall shield.
Are POS/SPOS shielded tray cables the right choice for a conduit system?
Yes, they are but there are also many other cables available in the market that are suitable for a conduit system. However, these cables are economical and they come with a sheath that is virtually impermeable. Most of these cables come with PVC or EPR with TC-ER, individual shielding that comes with 100% coverage.
What are the different types of shields of POS and SPOS cables?
There are different types of shields available for both the POS and SPOS cables. The most common types of shields available in the market are the PVC flame retardant ones. You might also see ones with “ER” (Extended Run) which will have the same crush and impact specifications as that of an UL Type MC cable. You can also find TPE, EPR, CPE and Haloarrest jackets for shielded tray cables.
Why is an overall shield important?
An overall shield will be considered important only when the shielded tray cables are used under the following conditions –
- Extreme environmental conditions –humidity level, temperature of work area
- Installation method - especially if it has to be buried or has to be outdoors
- Exposure to certain elements like oil or grease
- High risk of fire
What is the difference between a POS and SPOS?
POS simply means that the cable has a single pair with an overall shield or jacket.While SPOS is a cable that has shielded pairs that in turn are covered with an overall shield or jacket. Both types are used for wet and dry locations and also for any type of indoor and outdoor applications.
Is the insulation thickness a vital deciding factor for choosing a shielded cable?
The insulation thickness is a deciding factor for any type of cables, regardless of whether they are shielded or unshielded. It pertains to the conductor specifications, the voltage that it will be required to work under and the strength of the cable. Also, when the insulation is thick, it will affect the flexibility of the cable.