Per the National Electrical Code, a cable tray system is “a unit or assembly of units or sections and associated fittings forming a rigid structural system used to securely fasten or support cables and raceways.”
Dong Kwang Vina designed the Electric Cable Support Systems with reference to NEMA VE-1 Standard.
And tested in accordance with NEMA VE-1, IEC-61537, IEC-61084-1 Standard, it’s give a rage of class rating to meet the requirements of the industry.
The NEMA Standard is published by the National Electrical Manufacturers Association based in the U.S.A.
This is generally referred to in Vietnam for design guide lines as there are no Vietnam Standards.
NEMA Standard gives a clear loading to span classification with a 1.5 factor of safety on the collapse load when tested on a simple span which would be the worst case.
All of Dong Kwang Vina Products are manufactured according to ISO 9001 regulations.
For minimize the defect rate of the product, we inspect each manufacturing process in accordance with ISO Standard.