Price (Per FT.)
CONDUCTOR: 18 AWG - 16 AWG Class B stranded bare copper per ASTM B-3 and B-8
INSULATION: Flame-retartdant Cross-linked Polyethylene (XLPE)
COLOR CODE: Black/ White; Alpha-numeric print; alternate & inverted
SHIELDING Individual and overall 100% coverage, aluminum/polyester foil shield
JACKET: Black sunlight and moisture resistant Polyvinyle Chloride (PVC)
TEMPERATURE RANGE: -30°C to 90°C; (90°C Dry/90°C Wet)
OIL RESISTANCE: OIL RES I
SUNLIGHT RESISTANT: Yes
DIRECT BURIAL: Yes
VOLTAGE RATING: 600V rms, Max
Tray Instrumentation Control Cable XLP/PVC Triads Overall Shield (TOS) 600V
Tray Instrumentation Control Cable is made of a 16AWG – 18AWG Class B bare copper which is stranded per ASTM B-8 and B-3. Bare copper has excellent electrical conduction properties with very minimal resistance to the flow of electricity thus ensuring maximum power supply. The conductors are further stranded through twisting many conductors together, this increases the overall surface area making it have very low resistance and high flexibility for easy folding thus minimizing breakages.
For the purpose of insulating the conductor, a Cross-linked Polyethylene (XLPE) is used. Polyethylene is an organic compound which is hardy and with good dielectric strength and minimum resistance. It is very flexible and hard enabling the cable to be folded with ease.
Considering a relatively high power voltage flowing through such a small sized cable, up to 600v, some electrical interference may occur, therefore, the need for shielding arises. Therefore, an efficient shield, in this case Aluminum/polyester foil is used as the shielding material with 100% cover.
The cable isjacketed with Polyvinyl Chloride (PVC). PVC is a thermoplastic, versatile polymer with high mechanical strength and great resistance to punishing environmental conditions like sunlight and moisture that may adversely affect the performance of the cable.The jacket is color coded with Alpha numeric print which is black and white.
Approvals and certifications
This cable is of high quality which meets all the required standards. It is of UL Standard 1277, Type TC-ER listed as per NEC Article 336. It passes the UL 1685 and IEEE 383 Flame tests. It’s also approved in line with ICEA S-73-532 and ICEA S-95-658 (WC70) standards.
FAQ (STOS) shielded tray shielded triad overall shield
What are the common characteristics of shielded tray shielded triad overall shield cables?
These cables have the red, black and white conductors bound together with a shield which forms a triad. A cable may have many such triads which may then be numbered and the triads are totally isolated from each other with a drain wire for grounding. The triads are covered with an overall foil shield which can be made of aluminum or polyester.
What are the common places where you can see the use of shielded tray shielded triad overall shield cable?
These types of cables are generally used where there has to be maximum noise rejection such as instrumentation applications and many other purposes. So as such you can be sure to see them used in heavy processing plants where the noise level will be really high. They are also used in manufacturing plants, storage areas, offices and labs where you can find medium to low levels of noise.
What is the shield made up of?
The shield will usually be any of the following
The shield is then covered with an overall jacket which can be made of PVC or EPR.
Why should I go in for a shielded cable?
You can use unshielded ones as well as shielded ones without any noticeable difference in the performance of the cable. However, when there is a lot of electrical noise which is conducted as EMI or electromagnetic interference, then shielded cables are used. Insulation alone will not offer you protection against EMI. A shield will surround the conductors effectively so that they will not detect any EMI and therefore, will not transfer or absorb EMI. Furthermore, shields protect the cable, people and also any equipment to which it might be connected.
Can I use a shielded cable to connect equipment from two different circuits?
When you connect equipment from two different circuits, there might be some grounding issues as it can form a ground loop. However, when the ground voltage difference is minimal, there is no need to worry. In case it is high, it can damage the system, but you can terminate one end of the shielded cable using a connector which is non-shielded. However, this causes a floating shield and if this picks up additional noise, you will have to do proper grounding at both ends.