Oct / 31 /
Fiber reinforced polymer (FRP) cable trays are a type of cable management system that is becoming increasingly popular. They offer a number of advantages over traditional steel cable trays, including corrosion resistance, lightweight construction, and fire resistance.
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Advantages of FRP Cable Trays
Corrosion resistance: FRP cable trays are made of a composite material that is resistant to corrosion from a variety of chemicals and environmental factors. This makes them ideal for applications in harsh environments, such as marine and industrial settings.
Lightweight construction: FRP cable trays are significantly lighter than steel cable trays. This makes them easier to install and move, and it can also save money on shipping costs.
Fire resistance: FRP cable trays are fire resistant and can help to protect cables from fire damage. This is an important consideration for applications in public buildings and other areas where fire safety is a concern.
Disadvantages of FRP Cable Trays
Cost: FRP cable trays are generally more expensive than steel cable trays. However, the cost savings associated with installation and maintenance can offset the initial investment.
Strength: FRP cable trays are not as strong as steel cable trays. This means that they may not be suitable for applications where high loads are expected.
Comparison with Steel Cable Trays
The table below provides a comparison of FRP and steel cable trays:
Feature
FRP
Steel
Material
Fiber reinforced polymer
Steel
Advantages
Corrosion resistance, lightweight construction, fire resistance
Strength, cost
Disadvantages
Cost, strength
Weight, corrosion
Conclusion
FRP cable trays offer a number of advantages over traditional steel cable trays. They are corrosion resistant, lightweight, and fire resistant. However, they are also more expensive and not as strong as steel cable trays. The best type of cable tray for a particular application will depend on the specific requirements of that application.
Additional Considerations
In addition to the factors discussed above, there are a few other considerations that should be taken into account when choosing between FRP and steel cable trays. These include:
Application: FRP cable trays are typically used in applications where corrosion resistance, lightweight construction, or fire resistance are important considerations. Steel cable trays are typically used in applications where strength or cost are important considerations.
Environment: FRP cable trays are more resistant to harsh environments than steel cable trays.
Maintenance: FRP cable trays require less maintenance than steel cable trays.
By carefully considering the factors that are important for a particular application, engineers can select the best type of cable tray for the job.
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cmelguet(Electrical)
(OP)
16 Jun 13 11:27
Hi, I am involve in a project where we are running several 3 phase circuits of 33 kV using single phase conductors arranged in a trefoil formation. The cables are installed on a FRP cable ladder which is no good as a grounding conductor. The circuits lengths is around m, and all of the circuits goes from the main substation GIS switchgear to transformers 33/4.16 kV unitsubstations located around the plant.
Question: NEC requires to run a grounding conductor with every circuit. Normally the cable ladder is good enough for this. Since in this case i have an FRP cable ladder what are my alternatives?. Should I run an aditional grounding conductor for each circuit?. I understand the grounding grid is not good enough as a grounding conductor, even if all the grounding grids of the plant are joined together.
Regards,
Cristian
Replies continue below
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RE: FRP cable trays
7anoter4(Electrical)
16 Jun 13 14:56
According to NEC 250.4 General Requirements for Grounding and Bonding. (B) Ungrounded Systems. (1) Grounding Electrical Equipment. you have to connect the equipment non-carrying current metallic parts to the local Grounding.
But according to (4) Path for Fault Current.:
"shall be installed in a manner that creates a low impedance
circuit from any point on the wiring system to
the electrical supply source to facilitate the operation of
overcurrent devices should a second ground fault from a
different phase occur on the wiring system. The earth shall
not be considered as an effective fault-current path."
you have to install a grounding conductor along 33 kV cable on the FRP cable tray.
The grounding conductor has to withstand the Line-to-Ground-to-Line short-circuit current.
I am not sure the metallic cable tray-even aluminum made-could withstand a medium voltage system short-circuit current. Aluminum cable tray is good only up to A.-a low voltage short-circuit, may be. See NEC Table 392.60(A)
RE: FRP cable trays
cmelguet(Electrical)
(OP)
16 Jun 13 15:32
Thanks 7anoter4,
The 33 kV system is resistance grounded (600 A).
Another idea, the 33 kV cables installed in the cable ladder have a screen. Can i use the screen as a grounding conductor?. In this way i dont need to run a grounding cable along the FRP ladder.
Regards?
RE: FRP cable trays
davidbeach(Electrical)
16 Jun 13 16:33
Generally the higher the voltage, the lower the fault current. 40kA is real easy to achieve at 480V, but rather rare in the 15kV range. Getting above 40kA at 115kV requires lots of sources.
RE: FRP cable trays
7anoter4(Electrical)
17 Jun 13 10:07
"If the cable assembly is suitably rated for the ground fault current and is of the concentric neutral type, the shield conductors shall be permitted as the equipment grounding conductor."
NEC Table 250.122 for Rating or Setting of Automatic Overcurrent Device in Circuit Ahead of Equipment, Conduit, Not Exceeding 600 A recommends 1 awg [83.69 kcmil] copper conductor cross section.
See[for instance ] some concentric neutral cables:
http://www.prysmianusa.com/energy/product-families...
In my opinion, it is permitted according to NEC art.250.190 Grounding of Equipment.(C) Equipment Grounding Conductor. (2) Shielded Cables.:"If the cable assembly is suitably rated for the ground fault current and is of the concentric neutral type, the shield conductors shall be permitted as the equipment grounding conductor."NEC Table 250.122 for Rating or Setting of Automatic Overcurrent Device in Circuit Ahead of Equipment, Conduit, Not Exceeding 600 A recommends 1 awg [83.69 kcmil] copper conductor cross section.See[for instance ] some concentric neutral cables:
RE: FRP cable trays
7anoter4(Electrical)
17 Jun 13 13:20
I have to mention since the shield is grounded at both ends the losses of circulating current induced in the shield requires cable derating. However, you can reduce this current by cross bonding and transposition.
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News
FRP cable tray is through pultrusion the resin is impregnated with alkali free, twistless and wax free fiber yarn, which passes through high temperature. Tray type cable tray is the most widely used in petroleum, chemical, electric power, light industry, television, telecommunications, etc. "Yongchang" provides FRP/GRP Cable Trays solutions to our friends all over the world.
FRP/GRP CABLE TRAYS DESCRIPTION
The FRP cable trays, also known as GRP Cable Trays. Glass fiber reinforced plastic (FRP) cable tray is an excellent solution for supporting cables in harsh environments. We provide fiberglass cable trays for companies around the world that can withstand adverse corrosive conditions. Our fiberglass cable trays are ideal for challenging marine and offshore locations, oil and gas industries, etc. Due to their long life expectancy, they can provide high quality and reduce life cycle costs. (Do you have questions?)
We manufacture several types of FRP cable trays to choose from, including ladder, slot and channel, each designed for a specific application and environment. It is important to select the correct type of FRP cable tray for a particular application to ensure that it effectively supports and protects the cables being used.
FRP cable bridges are known for their corrosion resistance and durability, making them ideal for use in environments where traditional metal cable bridges may be prone to corrosion. They are lightweight and easy to install, which can be very useful in some applications. Cable bridges are used to support and organize cables and wires in a variety of applications, including commercial and industrial buildings, power plants and other facilities.
FIBERGLASS CABLE TRAY SPECIFICATION
The length of the FRP/GRP Bridge can be customized according to customer requirements.
Common specifications, thickness, and reference weight of perforated/trough fiberglass cable tray channel system
Specification (mm)
Groove/cover thickness (mm)
Weight (kg)
Specification (mm)
Groove/cover thickness (mm)
Weight (kg)
50*50
2.7/2.7
1.31
300*100
3.0/3.0
4.8
100*50
2.8/2.8
1.85
300*150
3.5/3.0
5.7
100*100
2.9/2.8
2.4
300*200
3.5/3.0
6.5
150*100
3.0/2.8
2.9
400*100
4.0/3
7.1
200*100
3.0/2.8
4.1
400*150
4.1/3.0
7.8
200*150
3.0/2.8
4.8
500*200
4.5/4.5/3.6
12.1
200*200
3.5/2.8
5.2
600*150
4.6/4.8/4.0
12.6
250*100
3.0/3.0
4.5
600*200
5.0/4.0
14.2
250*150
3.5/3.0
5.5
800*200
5.0/4.5
18
Common specifications, thickness, and reference weight of ladder glass fiber reinforced plastic bridge channel system
Specification (mm)
Groove/cover thickness (mm)
Weight (kg)
Specification (mm)
Groove/cover thickness (mm)
Weight (kg)
200*100
4.0/3.0
4.1
400*150
4.0/3.0
6.6
200*150
4.0/3.0
4.8
400*200
4.0/3.0
7.7
300*100
4.0/3.0
5.1
500*150
4.0/4.0
9.1
300*150
4.0/3.0
5.7
500*200
4.0/3.0
10.1
400*100
4.0/3.0
6
600*150
4.0/4.0
9.6
500*100
4.0/4.0
8.5
800*150
4.0/4.5
13.1
600*100
4.0/4.0
9
*150
4.0/4.5
11.2
800*100
4.0/4.5
10.4
200*200
4.0/3.0
5.9
*100
4.0/4.5
12.5
300*200
4.0/3.0
6.8
If you have any questions about product parameters, you can contact us at any time!
ADVANCED POLYMER RESIN
The polymer resin made use supplies safe residential properties for our glass fiber wire trays to make sure that they maintain excellent sturdiness and also stamina under continuously altering conditions. We are popular for our pultruded polyester material and also plastic ester material, both of which are fire retardants. If your application calls for outstanding toughness in drastically harsh environments, our vinyl ester resin is your recommended cable television tray material.
PULTRUSION PROCESS
During the extrusion process, the raw materials are pulled through a heated steel forming die using a continuous pulling device by pultrusion technology.
Resin Type
Resin Base
Description
Corrosion Resistance
Flame Spread Rating ASTM E 84
Product
Standard Colors
Max. Temp
Type V
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Vinyl Ester
Superior Corrosion Resistance & Fire Retardant
Excellent
Class 1, 25 or Less
Molded & Pultruded
Dark Grey
200° F
Type I
Isophthalic
Industrial grade Corrosion Resistance & Fire Retardant
Very Good
Class 1, 25 or Less
Molded & Pultruded
Green, Yellow, Light Grey
150° F
Type P
Phenolic
Low Smoke and Superior fire resistance
Very Good
Class 1, 5 or Less
Molded & Pultruded
Reddish Brown
200° F
THE MAIN TYPES OF FRP/GRP CABLE TRAYS
1. (Perforated) Glass fiber reinforced plastic trough type cable tray system is a fully enclosed cable tray. It is suitable for laying computers, communication cables, thermocouple cables and other sensitive system control cables. It can interfere with the shielding of control cables and in heavy corrosion environments. The protection of the cable has a good effect.
2. The FRP/GRP ladder type cable tray system is an ideal laying device widely used in the petroleum, and chemical industry, electric power, television, telecommunications, etc. It has the advantages of being lightweight, large load capacity, beautiful appearance, simple structure, convenient installation, and good heat dissipation and air permeability. It is suitable for the installation of power cables and the laying of control cables.
3. The FRP/GRP ladder cable channel tray system has the characteristics of lightweight, low cost, unique shape, good ventilation, and heat dissipation performance, etc. It is suitable for the laying of cables with larger diameters, especially for the laying of high and low-voltage power cables.
The flame-retardant fiberglass cable trays are a new type of product made of fiberglass anticorrosive materials by our company. It has the characteristics of high strength, good insulation performance, lightweight, reasonable structure, long life, simple construction, flexible wiring, etc . and it has excellent characteristics. Chemical resistance, fire resistance, flame retardancy, and sufficient mechanical strength. FRP/GRP cable trays are widely used in cable laying places of petroleum, chemical industry, metallurgy, electrical engineering, and other departments.
ADVANTAGES OF FIBERGLASS CABLE TRAY
Lots of people still approve of the sight that steel goes beyond rivals. Steel does go beyond glass fiber. Nonetheless, glass fiber provides the same mass-strength-to-weight proportion, and the weight is only one-third that of steel. This makes installation easier as well as much more affordable. Furthermore, this will certainly save life cycle prices. FRP/GRP cable tray has corrosion resistance, as well as likewise has good electrical conductivity, and also non-magnetic characteristics, so this glass fiber wire tray additionally reduces the risk of electric shock.
Compared to various other materials cable trays, FRP/GRP cord trays have the following benefits.
1. FRP/GRP wire channels are light and also high-strength (the particular gravity is just 1/4 of that of iron trays), corrosion-resistant, aging-resistant, thermal insulation, non-conductive, and anti-static.
2. Resonance reduction as well as sound reduction. The toughness of the glass fiber-reinforced plastic cable tray can minimize the resonance phenomenon created by the outdoors.
3. Non-toxic as well as non-polluting.
4. Heat-resistant and flame-retardant. The glass fiber-strengthened plastic cord tray has poor heat transfer capacity and excellent temperature resistance. The glass fiber-strengthened plastic flame-retardant cable tray is pultruded with flame-retardant material, which can be extinguished on its own.
5. Long life span. As well as it has the attributes of no deformation, no cracks, no dampness absorption, no halogen return, and great quantity security.
6. The cost is modest.
7. It can be made by interlocking the upper and also lower parts, can be interchanged, made use of independently, as well as can be utilized as a flame-retardant tray.
8. Connections such as straight joints, straight tees, and also horizontal crosses can be made according to individual needs.
9. The size and also height are established according to user demands or the specifications of the bridge.
10. FRP/GRP cable tray has the advantages of versatile power circulation, practical installment as well as affordability, as well as has been widely used.
There are a lot of applications in the chlor-alkali market, paper industry, potassium sulfate plant food sector, acid regrowth, pickling market, and chemical fiber industry.
FRP/GRP CABLE TRAYS STRUCTURE
FRP cable bridges are known for their corrosion resistance and durability, making them ideal for use in environments where traditional metal cable bridges may be prone to corrosion. They are lightweight and easy to install, which can be very useful in some applications. Cable bridges are used to support and organize cables and wires in a variety of applications, including commercial and industrial buildings, power plants and other facilities.
A complete glass fiber reinforced plastic cable channel system consists of straight pipes, horizontal elbows, horizontal tees, horizontal crosses, straight reducers, left reducers, right reducers, vertical outer bends, vertical inner bends and splicing plates, clamps, Connecting accessories such as brackets.
FRP/GRP Cable Bracket
FRP/GRP Elbow
FRP/GRP CABLE TRAYS APPLICATION
FRP/GRP cable trays are frequently discovered in oil, gas, and chemical plants, refineries, offshore installments, and also numerous various other atmospheres. For power as well as interaction wires, glass fiber is a trustworthy solution. Demand to buy from these FRP cable tray makers is because they are qualified to supply clients with conventional as well as licensed cord trays and FRP products. Furthermore, compared with steel cable television trays, FRP cable trays are extra economical and also economical and can hold up against heavy rainfall, straight sunlight, snow as well as other extreme climate condition without rusting.
FRP/GRP CABLE TRAY CERTIFICATION
Fiberglass or FRP/GRP cable trays are likewise called glass fiber-enhanced plastic cord trays, glass fiber-enhanced plastic wire trays (GRP), and also non-metallic cord trays. Makers of FRP GRP items first test cord trays and then provide them to the market.
All of our fiberglass cord trays have passed UL accreditation, and their features make them outstanding solutions for all professions.
They likewise satisfy the adhering to NEMA requirements: of NEMA 12A, NEMA 12B, NEMA 12C, NEMA 20A, NEMA 20B, NEMA 20C, and NEMA 20C+.
DO YOU NEED FRP/GRP CABLE TRAY PRICE LIST?
Our fiberglass cable tray made in China is your high-quality, long-lasting corrosion-resistant cable tray solution. You can easily find the right FRP/GRP cable tray catalog for your application here, so if you have any questions or guidance tailored to your project, please contact us.
CABLE TRAY-RELATED NEWS
FRP Cable Tray Provides The Best Solution For Harsh Environments
What Is a Cable Tray?
What are the Types of Cable Trays?
Think about all the cables in buildings, like the ones for electricity or internet, tangled up and messy. Now, imagine there's a special system to tidy them up and keep them organized. That's what a Cable Tray System does. It's like a network of trays that hold the cables neatly in place, either above, below, or on walls. But what exactly are cable trays, and what are the materials used in it? Let's take a deep dive into it!
In the ever-evolving world of electrical and communication infrastructure, cable tray systems play a crucial role in organizing and protecting the network of cables. Whether it's a commercial office, an industrial plant, or a residential complex, cable trays are an essential component for efficient cable management. Several reputable manufacturers and suppliers are there to provide the best Cable Trays in UAE. In this blog, we'll dive into the various types of cable trays, the materials used in their construction, and their diverse applications across industries.
Understanding Cable Trays: An Overview
What Are Cable Trays?
Cable trays are support systems designed to securely route and manage electrical cables, wires, and communication data lines. They offer a structured pathway for cables, ensuring organization, protection, and ease of maintenance within diverse environments.
Types of Cable Trays
Cable trays are used in various industries to support, protect, and manage cables and wires. There are several types of cable trays available, each designed for specific applications and environments.
Here are some common types:
Ladder Cable Trays
One of the most common and versatile cable tray systems, ladder cable trays feature a series of side rails connected by rung-like cross-members, resembling a ladder structure. Their open design allows for easy cable installation and maintenance, making them ideal for electrical cable tray applications.
Solid Bottom Cable Trays
As the name suggests, solid bottom cable trays have a continuous bottom surface, providing a sturdy base for cable support. These trays are particularly useful in environments where debris or liquids may be present, ensuring the cables are protected from potential damage.
Wire Mesh Cable Trays
Constructed with a mesh-like pattern, wire mesh cable trays offer excellent ventilation and cable visibility. They are often used in data centers and telecommunication facilities, where heat dissipation and easy access to cables are essential.
GI Cable Trays
GI cable trays, or galvanized iron cable trays, are used in electrical wiring installations to support insulated electric cables used for power distribution and communication. They are made from galvanized iron, which provides corrosion resistance and durability, making them suitable for both indoor and outdoor applications.
For top-quality cable management solutions, choose trusted Cable Trays suppliers and Cable Trays manufacturers offering durability, versatility, and exceptional service.
Different Materials Used in Cable Trays
Cable trays are manufactured using various materials, each offering different characteristics suited for specific applications and environments. Some common materials used in cable tray construction include:
Steel
One of the most commonly used materials for cable trays, steel offers superior strength and durability. Steel cable tray, such as mild steel cable trays, Stainless Steel Cable Tray, galvanized iron (GI) cable trays, and stainless steel cable trays, are suitable for a wide range of applications, from industrial settings to commercial buildings.
Aluminum
Lightweight yet sturdy, aluminum cable trays are an excellent choice for applications where weight is a concern, such as in high-rise buildings or outdoor installations. They are also resistant to corrosion, making them suitable for coastal environments.
Fiberglass Reinforced Plastic (FRP) or Glass Reinforced Plastic (GRP)
These composite materials offer excellent chemical resistance and electrical insulation properties, making them ideal for harsh environments or applications where electrical interference is a concern. FRP cable trays and GRP cable trays are commonly used in the chemical, oil, and gas industries.
Common applications of Cable Trays Across Industries
Cable Ladders And Cable Trays are versatile components used across various industries for managing and supporting cables and wires.
Here are some common applications:
Industrial Plants and Factories
Industrial cable trays are extensively used in industrial facilities such as manufacturing plants, oil refineries, chemical plants, and power generation plants. Suspended cable tray, power track cable tray,hdgaf cable tray, plastic cable tray are popular choices for these applications due to their ease of access. They are used to route and organize cables for power distribution, control systems, instrumentation, and automation systems. Cable trays such as trunking cable tray in industrial settings often need to be made from corrosion-resistant materials like stainless steel or FRP/GRP to withstand harsh environments.
Commercial Buildings and Offices
In commercial buildings, cable trays are used for organizing and routing electrical cables, data cables, and communication cables. They are commonly found in office spaces, data centers, server rooms, and telecommunication facilities. Ladder cable trays, HVAC cable trays, wire mesh cable trays and channel cable tray are popular choices for these applications due to their versatility and ease of access. There are many reputable Cable Trays suppliers in UAE providing the best cable trays for office.
Healthcare Facilities
Cable trays are essential in hospitals, clinics, and other healthcare facilities for managing cables related to medical equipment, building automation systems, and communication networks. Stainless steel and FRP/GRP cable trays are often preferred in these settings due to their hygienic properties and resistance to chemicals and corrosion.
Infrastructure Projects
Cable trays such as Construction cable trays, pvc cable tray, underground cable tray,conduit cable tray,galvanised cable tray play a crucial role in large-scale infrastructure projects such as bridges, tunnels, airports, and transportation systems. They are used to route and protect cables for power distribution, lighting, control systems, and communication networks during construction and ongoing maintenance.
Telecommunication Networks
Cable trays are commonly used in telecommunication networks, including telecommunication towers, cellular sites, and central offices. They provide a structured and efficient way to route and support the vast network of cables required for lines, fiber optics, and wireless communication systems.Ict cable tray is popular choices for these applications.
Cable trays offer a versatile solution for cable management across various industries, providing benefits such as organization, accessibility, safety, and scalability.
Conclusion
Cable tray systems are important components in modern infrastructure, providing safe and efficient support for various cables and wires. With a wide range of types and materials available, they offer flexibility to suit diverse applications across industries. As technology continues to evolve, cable tray systems will remain essential for managing the ever-growing complexity of electrical installations, contributing to the reliability and efficiency of modern infrastructure worldwide. There are various Cable Trays manufacturers in UAE offering the best cable trays and catering to the diverse needs of the construction, infrastructure, and industrial sectors. With a wide range of options available, from affordable cable trays in UAE to premium solutions, you can find the perfect cable tray system to meet your requirements and ensure a safe, organized, and efficient cable management infrastructure.
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