Ahmed Ramadhan Juma Holding is an integrated manufacture, assembly and engineering group of companies. We provide comprehensive products and services dedicated to the agricultural, buildings and construction industries in the Gulf.
We are also involved in private equity and venture capital and as such our scope of business has developed to include interests in the financial services and retail. Our objective is to deliver business solutions in a manner that reflects the integrity and values of its owner. As such quality and social responsibility are our principal practicing guidelines. Ahmed Ramadhan Juma Group is a multinational company that started in Dubai in Our core business is building services.
We have four separate divisions: water technology, electrical and electromechanical engineering, real estate development and private equity investment. We are expanding into new areas that include landscaping, construction, and construction equipment.
Our organisation represents some of the world's biggest firms and our clients are governments and large global players. We aim to become a foremost provider in the electromechanical, building, construction and landscaping product and service industry in the GCC, and we have a strategy to this end.
Essentially we are a firm of engineers, finance and human resource professionals, and business managers. We employee over people in 4 countries yet our reach is global. Our founder Mr. Ahmed Ramadhan Juma, a name that remains synonymous with self-respect, dependability, and modesty. The business back then concerned the sale of water pumps as it does today, though now we are ARJ Holding, a group of companies, Our core businesses serve the building and construction industry, in water pump assembly and sales, electrical and electromechanical engineering, property development, sales and leasing, and landscaping.
Ahmed Ramadhan Juma Holding is an integrated manufacture,assembly and engineering group of companies. We provide comprehensive Our core business is building servicesWilmar Sandwich Busway Systems referred based on sandwich type arrangement of insulated conductors in metal enclosure making it a compact design, offer higher short circuit withstand capacities and are being preferred in place of conventional means of electrical power distribution via cables, air-insulated bus ducts.
Wilmar Sandwich Busway Systems are easier to handle during installation. They offer flexibility in routing and are easier to relocate if the need arises. New Plugin Boxes can be easily plugged in, decreasing the cost of modification — which in case of conventional distribution methods would require the additional expense of sub-distribution board in addition to extra time.
Quicker installation, efficient operations with maintenance free joints reduce installation and operational costs of these systems making them preferred. Advantages of Wilmar Sandwich Busway. Home Advantages of Wilmar Sandwich Busway. Applications — Power Distribution in Horizontal and Vertical Runs Compact and Safer Design Wilmar Sandwich Busway Systems referred based on sandwich type arrangement of insulated conductors in metal enclosure making it a compact design, offer higher short circuit withstand capacities and are being preferred in place of conventional means of electrical power distribution via cables, air-insulated bus ducts.The busbar trunking system was first introduced in America in the s to meet the needs of the high rise buildings and the changing production technologies in factories.
The system started to be used in Japan and Europe in the s. With their modular configuration, EAE E-Line Busbar energy distribution systems meet all power requirements in modern enterprises and buildings. Alterations in layouts, addition of machinery, and provision of power at various points can be achieved without disrupting the operational parts of the facility. Power is distributed via isolated bars within a sheet metal or aluminum enclosure and is safely distributed using tap-off boxes which can be plugged in and out safely from tap-off outlets along the length of the busbar without interrupting the power supply to other equipment supplied by the same busbar.
E-Line Busbars, which have international test certificates, can be expanded, replaced, moved or reused whenever necessary. It is very easy, economical and safe to take power using tap off boxes placed anywhere along the busbar route.
Conductors are made of aluminum or electrolytic copper as per choice. Busbar KX: Provides transfer and distribution of energy in the current levels between A and A With tin-plated aluminum busbar or copper busbar conductors.
Busbar CR Cast Resin Busbar : Provides transfer and distribution of energy in the current levels between A and A With tin-plated aluminum busbar or copper busbar conductors. Busbar KB: Provides transfer and distribution of energy in the current levels between A and A With tin-plated aluminum busbar or copper busbar conductors.
Busbar KO-II: Provides transfer and distribution of energy in the current levels between A and A With tin-plated aluminum busbar or copper busbar conductors. Busbar MK: Provides transfer and distribution of energy in the current levels between A and A With tin-plated aluminum busbar or copper busbar conductors.
Each component of the system is modular and can be installed and uninstalled easily. The entire system may be moved to another location if necessary.
In addition to their functionality, E-Line Busbar systems give a modern look to business enterprises. Through their modular structure and superior features, E-Line Busbar systems provide easy, economical, fast and modern solutions for the relocation of machinery and similar equipment in business enterprises.
All modifications and additions can be performed easily without interrupting the operation of the facility.The inspection and test plan for bus duct article provides you information about bus duct test and bus duct inspection in manufacturing shop. The draft Inspection and test plan provided as well. Click following link if you need to review general definition for Inspection and Test Plan.
Inspection and Test Plan. The witness of some inspection and test by third party inspector is mandatory and cannot be waived.
Some others must only monitored and fully witnessing is not necessary, for these thing, the inspection man-days etc. These are some of inspection points which need to be witnessed, checked, monitored and reviewed by third party inspector in bus duct manufacture shop.
Cable Bus vs. Bus Duct
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Follow on.Bus duct is used for the effective and efficient supply of electricity in mostly industrial locations. Copper or aluminum is used for the conductor of bus duct that be insulated and enclosed completely for protection against mechanical damage and dust accumulation.
Sandwich Bus Duct
A bus duct system is an effective method of distributing power to your switchgear and various loads. However, bus duct problems can lead to catastrophic damage and extensive downtime.
There are basically three general categories of bus duct all-metal enclosed. The nonsegregated phase bus implies a duct where all phase conductors are in a common metal enclosure without barriers between phases.
This definition applies to rigid and flexible conductors such as the bar or cable duct. Segregated phase bus is a duct where phase conductors are in a common metal enclosure but are segregated by ground metal barriers between each phase conductor.
Isolated phase duct is when each phase conductor is enclosed in its own metal housing and adjacent conductor housings are separated by an air space. This duct usually has higher amp ratings than other types. The housing and conductors are tubular in shape and are welded at site together. This duct is force-air cooled above a A continuous rating.
ANSI C When part of the equipment, it contains the associated equipment such as inter connections, enclosures, switches, supporting structures and disconnecting links. This includes disconnects primarily used with isolated phase duct but can be used with all other types of duct, including cable duct.
Outside the scope of this standard is duct rated to V or open type conductor assemblies. The CSA C This standard covers the design, manufacture, testing and ratings of all types of metal-enclosed bus duct including cable duct systems. It includes all accessories associated with all types of duct, as does ANSU. For isolated phase duct, it is limited to amp ratings up to A continuous.
All three duct systems are actually identical as to application and have the same basic ratings as previously listed. Price usually determines which application is most appropriate for which type of duct. One should not consider the duct cost alone but include the cost of installation, and therefore the total cost of the installed duct system.
In general, segregated bus duct can be considered slightly more reliable than non-segregated duct based on the fact that a-bus-to-ground fault may be contained within the separate, groundedmetal- barriered compartments. This is particularly true for initially low-level ground faults that exist on an ungrounded, or high-resistance grounded, system.Busduct - Powerduct (Full version)
Rigid conductor bus duct is basically factory manufactured and requires bolting sections together in the field and installing insulated conductor joint boots. Accessories are generally factory assembled, including equipment such as switchgear and transformers.System arrives as complete made to measure segments with conductors factory installed, only needing assembly. Cable Bus vs. Bus Duct Comparison of the two technologies. Bus duct is defined in the NEC Types of Bus duct Air insulated Air insulated with segregated phase barriers Gas insulated sulfur hexafluoride Isolated phase Forced Cooled Enclosed oil cooled.
Comparison of Bus Duct and Cable Bus Bus Duct System arrives as complete made to measure segments with conductors factory installed, only needing assembly.
Making small field adjustments very difficult if not impossible. Arrives in pre-cut easy to assemble segments. Can easily be modified and adjusted to fit on site. Conductors installed after enclosure to ensure exact fit.
Busbar jointing can be simple, through the use of bolted connections. Providing inadequate conductor contact area increasing joint resistance. Require regular inspection and adjustment.
Drastically increase operating and maintenance costs. Conductors are fully continuous throughout system. Eliminating joint resistance, and potential weaknesses. Simplifying installation. Drastically reducing maintenance and operating costs. Busbar jointing can be effective, through the use of copper welding, or clamped joints. Maintains free air rating. Many system types available for specific application needs. Increasing complexity of design and maintenance requirements Only one type needed for almost all applications.
News Videos Contacts. Increasing complexity of design and maintenance requirements.Technical Specifications. Techno-commercial Bid Part-I. Section A:. General Description. Reference Standards. Environmental conditions. Scope of work. Technical specifications. Packaging and transport. Installation, testing and commissioning. Commercial terms and conditions. Delivery period. Performance Bank guarantee. List of Preferred makes. Section B: Schedule of Prices. List of Enclosures and Drawings:.
Annexure Guaranteed Technical Particulars. Tender Drawing No. The Proposed outdoor sandwich Bus duct is required for electrical power transfer in between Indus substation and Power Conditioning system PCS building. The total eight 08 lengths of the sandwich bus duct shall be erected in between Indus substation and PCS building with their end terminations.
The end terminations on either sides ends shall be from top and through flexible tinned copper links. The bidder shall submit the requisite design details, schematic drawings including end terminations etc. The bidder shall comply with the following conditions. The bidder shall have reasonable number of installed base of similar capacity and submit a valid documentary proof for the same in part—I Technical Bid. In case bidder is authorised system integrator, he should submit the agreement with OEM, showing that he is authorised to quote on their behalf for this tender and they shall support the bidder for all warranty etc.
Three similar works costing not less than Rs. In this regard, a list of clientele with address and contact number having such installation shall also be provided for verification. Specification for low voltage switchgears and control gears - General rules. Specification for Low-voltage switchgear and control gear assemblies - Type tested and par tially type-tested assemblies.