External door type A particular class of electrical transformer intended for outdoor installation in electrical distribution networks is known as mineral oil immersed distribution transformers. These transformers are essential components of electrical distribution networks because they reduce the high voltage energy produced at power plants to levels that are appropriate for residential, commercial, and industrial use. They are perfect for installation in a variety of outside situations because of their exterior design and door for access, which also make them easily serviceable and maintainable. Since mineral oil provides efficient electrical insulation and heat dissipation, it is frequently used in distribution transformers as an insulating and cooling medium.
The need for external door oil immersion distribution transformers stems from a number of issues, such as the growth of the energy infrastructure, energy efficiency objectives, environmental concerns, and the changing energy market.
In order to guarantee that the transformers used in power distribution systems are secure, dependable, and able to satisfy the requirements of outside installations, criteria for outdoor type door oil immersion distribution transformers are crucial. A precise set of technical standards is provided by these specs, which manufacturers must adhere to while designing and producing these transformers.
Under IS standard IS 1180 (Part 1): 2014, all outdoor type door oil immersed distribution transformers up to and including 2500 kVA, 33 kV-specification part 1 mineral oil immersed, are required to be certified by ISI.
This product must have the ISI Mark on it in order to be sold, imported, or exported to India.
Indian Standards Institute, or ISI was renamed the Bureau of Indian Standards (BIS) in 1987. The official mark that the Bureau of Indian Standards provides for manufacturers of various goods is the ISI Mark. It is used to indicate compliance with Indian standards (IS) set by the Bureau of Indian Standards (BIS) and has been used as a conformity marking for industrial products. Manufacturers received permission from BIS to use the ISI Mark on items that comply with relevant Indian requirements through the product certification program.
Only manufacturers (domestic or foreign) who produce the finished product will be awarded ISI Certification. This will not be given to any product importers, traders, dealers, or distributors.
The following documentation is required to get an ISI certification:
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There are two approaches for Indian manufacturers to become certified with the ISI Mark:
Regular Procedure
With the possible exception of cases deemed "All India first," which might take up to 180 days, the licensing procedure is expected to be finished in 120 days. This timeline starts on the day the application is received, assuming that at different points in time the documentation, unit assessment, and product conformance are all deemed acceptable.
Step 1: Manufacturing Unit Customization in Compliance with Applicable Indian Standards
Step 2: Submission of the Application Form
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Simplified Procedure
This is a much faster process than the standard procedure. After a factory inspection is deemed satisfactory and the initial evaluation establishes that the sample complies with the applicable Indian Standard(s), the license application process is expected to be finished in 30 days.
Step 1: Adapting the Manufacturing Unit to Comply with the Relevant Indian Standard
Step 2: Sample Testing
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The process of obtaining ISI Mark Certification for Foreign Manufacturers typically includes the following steps:
Step 1: Application
Step 2: Query Raised (If Any)
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Brand Liaison provides helpful support for achieving ISI Mark Certification. Among our offerings are:
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