What is a Hot-Dip Galvanized Iron (GI) structure?

Hot Dip Galvanizing is the process of applying a zinc coating to fabricated iron structure by immersing the structure in a bath consisting primarily of molten zinc. The galvanizing prevents the corrosion of the iron structure by providing a tough metallic zinc envelope, which completely covers the surface of the structure and seals it from the corrosive action of its environment. Hot-dip galvanizing involves three main steps: Preparation: The galvanizing reaction can only occur on a chemically clean surface, so the first step of the process involves removing any contamination on surface of the iron structure. Galvanizing: The clean iron structure is dipped into the molten zinc, and held there until the temperature of the iron quilibrates with that of the bath. The structure is then pulled-out & allowed to cool. Inspection: After galvanizing, the coated materials are inspected for coating thickness, uniformity and coating appearance. It is advisable to have galvanization post-fabrication of the structure in order to avoid any damage to the galvanized layer. The thickness of galvanization varies from 40 -150 micros depending on the local site conditions and requirements. Read more

How is the Net-Metering of grid connected rooftop solar plant is established?

In India, the local utility company/DISCOM is responsible to establish net-metering for grid connected rooftop solar plants. The local utility company or the DISCOM first reviews the application for net-metering and requisite project related documents submitted by the consumer or the installer of the solar plant and provides approval, if the project is feasible based on the capacity of local distribution transformer & the design documents, components etc. of the system are inline with their requirements. Once that the project is approved & the plant is installed, the Net-Meter is installed by the local utility company/DISCOM. Read more

Who is responsible for procurement, testing & installation of net-meter?

Depending on the state regulations, the DISCOM or the consumer procures the net-meter as per the energy meter standards specified in the state regulation. The testing of the net-meter & installation at the consumer premises is done by the respective DISCOM. Read more

What would happen if the solar panels deployed in the system have different electrical characteristics?

When solar panels with different electrical characteristics, interconnected with each other are deployed in the system, it creates serious power losses & adversely affects the overall energy generation. These losses are referred as “Mismatch losses”. The current (Isc) in the string in which the panels are connected in series with each other, is limited to the lowest output current from any of the panel. Thus mismatch causes the lower output power from the string & the system efficiency and performance becomes lower. Read more

Does the tilt angle and/or orientation of the solar panel affect performance of the solar plant?

The performance of the solar panel is affected by its tilt angle and orientation with respect to the horizontal plane. Orienting the solar panel in a direction and tilt to maximize its exposure to direct sunlight can ensure a better generation. The solar panel collects solar radiation most efficiently when the sun’s rays are perpendicular to the panel’s surface. Solar panels should always face south if the plant is in the northern hemisphere, or north if the plant is in the southern hemisphere & the tilt of the solar panels should be proportionate to the latitude of the plant site to optimize their power generation throughout the year. The installer of the plant analyses the optimum tilt & orientation before installing the solar plant. [Source: Youtube] [Publisher: altE Store’s Educational Video Channel] Read more

Can my solar panels withstand harsh weather conditions?

Weather conditions are unlike in each location.  As solar plants are installed around the world, solar panel manufacturers test their products to ensure that they are dust & storm resistant, salt mist & ammonia corrosion resistant, capable to withstand hail storms & heavy snow loads & extreme temperature variations. The junction box attached with the modules are made waterproof. Read more

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