Cable Trays


Cable Trays

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.

Advantages

  • 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.

Specifications

  • 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 strength
  • 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 length.
  • 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 150 mm.
  • 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.

Installation Guide

  • 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

90° Horizontal Radius Bend

W(mm) L(mm) A(mm)
152 1207 854
229 1314 930
305 1422 1006
457 1638 1159
610 1854 1311
762 2070 1464
914 2286 1616

90° Horizontal Direct Bend

W(mm) A(mm)
152 330
229 406
305 483
457 635
610 787
762 940
914 1092

90° Inside Vertical Radius Bend

W(mm) A(mm) L(mm)
100 530 749
150 530 749
200 530 749

90° Outside Vertical Radius Bend

W(mm) A(mm) L(mm)
100 505 714
150 555 786
200 606 857

Straight Reducer

W1(mm)
914 762 610 457 305 229
W2 (mm) 152 1105 1029 953 876 679 670
229 1067 991 914 838 670 -
305 1029 953 914 679 - -
457 953 908 679 - - -
610 908 679 - - - -
762 679 - - - - -
L(mm)

Right or Left Hand Reducer

W1(mm)
914 762 610 457 305 229
W2 (mm) 152 1410 1175 1175 940 940 705
229 1175 1175 940 940 705 -
305 1175 940 940 705 - -
457 940 940 705 - - -
610 940 705 - - - -
762 705 - - - - -
L(mm)

Horizontal Radius Tee

W (mm) A (mm) L (mm)
152 780 1410
229 850 1410
305 930 1410
457 1080 1640
610 1240 1880
762 1390 1880
914 1540 2110

Horizontal Radius Cross

W (mm) A (mm) L (mm)
152 780 1410
229 850 1410
305 930 1410
457 1080 1640
610 1240 1880
762 1390 1880
914 1540 2110

FRP Cable Tray Covers

  • Most economical installation with Thermo-plastic Drive Rivets
  • Cover Hold Down Clamps allow cover to be removed for easy access to cables
  • Available in ventilated & non-ventilated type

FRP Splice / Connector Plate

Two nos. of Coupler / Splice Plates are required for each 3 mfrs. length of Cable Tray to be clamped with nuts & bolts on two ends for connecting it to another length of cable tray.


Cable Tray Hold Down Clamp

  • Eliminates the Need to Drill to Punch Holes Write Allowing for Normal Expansion
  • This Guide becomes a clamp with use of a 316 SS set screw on top
  • Set SCREW is included with part
  • Guide is also easily adaptable for right or left sided

Specifications

Perforated Type Cable Trays

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.


Perforated Cable Tray Model No. Tray height - H (mm) Runner width - W (mm) Thickness - T (mm)
ARC - PT2A 50 50 3.0
ARC - PT2B 50 100 3.0
ARC - PT2C 50 150 3.0
ARC - PT2D 50 200 3.0
ARC - PT2E 50 300 3.0
ARC - PT3A 80 100 3.0
ARC - PT3B 80 150 3.0
ARC - PT3C 80 200 3.0
ARC - PT3D 80 250 3.0
ARC - PT3E 80 300 3.0
ARC - PT3F 80 400 4.0
ARC - PT3G 80 500 4.0
ARC - PT3H 80 600 4.0
ARC - PT4A 110 100 4.0
ARC - PT4B 110 200 4.0
ARC - PT4C 110 300 4.0
ARC - PT4D 110 400 4.0
ARC - PT4E 110 500 4.0
ARC - PT4A 110 600 4.0

Perforated Cable Tray Model No. Load Bearing UDL (Kg/mtr)
ARC - PT2A 11
ARC - PT2B 15
ARC - PT2C 18
ARC - PT2D 25
ARC - PT2E 30

  • Load design is for a support span of 2.5 mtrs. Standard tray length is 3.0 mtrs
  • Maximum deflection range 12.7 - 25.4 mm
  • Load bearing UDL for other models are available on request

Mitered Fittings for the Perforated Cable Tray

90° Vertical Inside Bend

W (mm) A (mm)
50 565
75 565
100 565
150 565
200 565
250 568

90° Vertical Outside Bend

W (mm) A (mm)
50 559
75 559
100 559
150 559
200 559
250 559

90° Horizontal Bend

W (mm) A (mm)
50 610
75 635
100 660
150 711
200 762
250 813

Horizontal Tee

W1 (mm) W2 (mm)
51 51
76 76
102 102
152 152
203 203
255 255

Horizontal Cross

W1 (mm) W2 (mm)
51 51
76 76
102 102
152 152
203 203
255 255

Cable Tray Hold Down Clamp

Cable Tray FRP Cover Hold Down Clip


Cable Trays Products

Cable Trays

Cable Trays

Cable Trays

Cable Trays

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