ARC FRP cable trays are developed for a comprehensive range of cable management needs in environments beyond reach of conventional materials where corrosion resistance and lasting mechanical performance are key requirements.
Constructed from glass reinforced thermoset isopthalic polyester fire retardant resins, ARC Cable Support Systems are designed and manufactured with a structural integrity normally only associated with steel and aluminum, but without their corrosion, weight and electrical conductivity problems.
UV stabilizers & Fire retardants are added to enhance the properties. We manufacture cable trays by means of the pultrusion process, with a combination of cross strand glass mat which is resin soaked and pulled through a die to produce a very solid structurally sound profile. Our FRP Cable Trays can be supplied in a variety of sizes along with a comprehensive array of fittings to cater for any project large or small.
ARC FRP cable trays can be supplied either as the cable tray or with the uniquely designed ‘Click-fit-Lid’ so it is fully enclosed. All our cable trays can easily be fabricated onsite or, offsite.
All ARC Cable Tray Systems (CTS) are designed using high strength to weight ratio pultruded structural composite profiles. The ARC CTS are manufactured as per:
NEMA FG 1: 1993 Rev. 1 (1994)
IS 6746: 1994
ONGC 4000 S
EIL-50 OEDS - 422 Rev. 4
Installation way of our cable trays are flexible. They could be laid overhead along with the process pipeline, lifted between floors and girders, installed on inside and outside wall, pillar wall, tunnel wall, furrow bank, also could be installed on the open air upright post or rest pier. ARC cable trays could be laid horizontally, vertically. They could turn angle, divided according to "T" beam or crossly, could be widened, heightened, changed track.
On large projects, our cable systems have the ability to adapt to the said project and we are more than willing to discuss your requirements.
- Full Ventilation - Power cables need not be derated in a ventilated cable tray system. Explosive
gases cannot be trapped or transmitted as in totally enclosed wiring systems.
- Long Support Spans - ARC Cable Tray Systems are designed for up to 3mtr support spans,
longer than most other wiring methods. Fewer supports reduce both installation time and cost.
- Corrosion Resistance - The inherent chemical resistance makes it desirable for severely
corrosive environments. Life cycle costs of ARC cable tray installations can be dramatically
reduced by the extended life expectancy of this product.
- Transparent to RF transmission - Fibreglass composites do not cause electromagnetic
interference and are transparent to radio frequency transmissions. ARC Cable Support Systems
provide a solution in applications where clarity of communication transmissions is paramount.
- Non Conductive and Non Magnetic - As ARC cable ladder and tray is non conductive, there
is no concern of transmitting electricity into the support system from damaged cables. Additionally,
there is no requirement for special support conditions to prevent electrolytic corrosion. Non
conductive and non magnetic features mean a safer support system.
- Lightweight and Manageable - Pultruded fibreglass profiles used in ARC Cable Support
Systems have a specific gravity of one-fourth that of steel and two-thirds that of aluminum, allowing
for considerably simplified erection and handling. Unlike stainless steel, ARC Cable Support
Systems can be easily cut and drilled on site using only hand tools.
- High Strength to Weight Ratio - ARC Cable Support Systems have a superior strength to
weight ratio compared to steel or aluminum whilst maintaining a similar structural integrity. The
Pultrusion process utilised in manufacture, results in high glass content and consistent
reinforcement location. These are critical for consistent performance and achievement of the
necessary physical properties.
These are manufactured by assembling various cross sections like side runners / 'C' channels
and rungs. According to the loading condition, a suitable 'C' channel is selected.
The working (allowable) load capacity represents the ability of fibreglass cable ladder to support
the static weight of the cables. It is equivalent to the destruction load capacity, with a minimum
safety factor of 1.5.
The longitudinal members or side runners are the pultruded 'C' sections, which provide excellent
The Cable Ladder width is the distance between two channels which is fitted by rungs / unistruts.
It is the length of the rung / unistruts, between the two channels. The rungs / unistruts are inverted
channels of 40 mm width x 20 mm depth and 4 mm thickness. The rungs are secured to the side
runners / longitudinal members by SS 304 / SS 316 fasteners. The rungs are designed to
eliminate rolling over. Our rung / unistruts length range is 150 mm, 200 mm, 300 mm, 400, 450
mm, 500 mm, 600 mm, 750 mm, 900 mm, 1000 mm and 1200 mm.
The Cable Ladder length is the length of the side runner / 'C' channels. Our range is 3000 mm
The Cable Ladder rang spacing is the distance between two rungs / unistruts. Our rung spacing
is 300 mm.
The Cable Ladder height is the height of the side runner / 'C' channel. Our range is 100 mm and
The Cable Ladder tray thickness is the thickness of the side runner / 'C' channel. Depending
upon the load condition the thickness is selected. Our range is 4 mm, 5mm and 6 mm.
The fittings are used whenever cable needs to be bent at variable angles (90°, 60°) by using
variety of fittings. The fittings are mitered at 305 mm radius. Whenever the width of the cable
ladder needs to be changed, reducers are used. To run the cable three ways, 'T' fittings are used
and likewise to run a cable four ways 'Cross' fittings are used.
The installation of ARC Cable Tray should be made in compliance with the standards set forth by the NEMA Publications FG – 1 (current issue).
Always observe common safety practices when assembling tray and fittings in the field. Assemble in well-ventilated areas as dust from field cuts can accumulate. This presents no serious health hazard but can cause skin irritation and if allowed to accumulate with grease and other machining lubricants, can become abrasive. Personal should wear safety goggles, dust mask, coveralls or a shop coat when sawing, machining and/or sanding.
Avoid generating excessive heat in any machine operation, as heat softens the bonding resin in the fiberglass, resulting in a ragged rather than a clean-cut edge.
Avoid excessive pressure when sawing, drilling, and routing etc. Use carbide-tipped drill bits and saw blades for extended tool life.
The use of lubricant during machining is not recommended.
To avoid chipping of material at cut edges, secure cable tray and fittings properly during field cutting operations.
We recommended the use of compatible sealant for sealing surfaces and cut edges after field cuts are made.
Supports must be located so that connectors (splice joints) between horizontal runs fail between the support point and the quarter point of the span. Standard engineering practice requires that the spice joints be located where they will resist little or no bending moment. This allows the cable tray system to act as a continuous member with spans working in conjunction with one another to resist loading. When a cable tray system is installed with the splice joints located directly over the support, the previous continuous span condition is changed to one of a number of simple spans. These spans act independently of each other and excessive stress will occur at substantially less loading. Vertical straight lengths should be supported at intervals dictated by the building structure not exceeding 7.4 mtrs on centers.
A support should be located 600 mm on each side of an expansion connection.
Miltered Fittings for the Cable Ladders
The perforated type, solid bottom, pre-drilled cable tray are designed for light loads i.e. instrumentation
and control cables and for die transition from cable trays to individual control points.