Energy Master

  . Tata Motors , India’s biggest passenger electric vehicle manufacturer, has launched the Tigor EV at Rs 11.99 lakh (base XE variant, ex-showroom) The battery-electric sedan which has a claimed drive range of 306 km, is the second EV from Tata Motors for the personal buyer after the Nexon EV which was launched in January 2020. The real drive range of the Tigor EV would be 230-250 km to a full charge as per the company. The Tigor EV will be offered in three trims. The middle variant XM is priced at Rs 12.49 lakh while the top-end trim XZ+ is priced at Rs 12.99 lakh. These prices do not include subsidies provided by various states. The Tigor EV sports a 26kWh liquid-cooled, lithium-ion battery pack which is higher than the 21kWh battery pack offered on the Tigor EV for commercial buyers (taxi operators). This new Tigor EV is a much-improved version of the first generation Tigor EV that Tata Motors had built for the Energy Efficiency Services (EESL) tender in 2018. The older generat...

" " Australian National University researchers claim to have set a world record for bifacial solar cell efficiency that they say could boost the energy output of solar farms by 30% . ""   Bifacial modules produce solar power from both sides of the panel. Whereas traditional opaque-back sheeted panels are mono facial, bifacial modules expose both the front and backside of the solar cells. When bifacial modules are installed on a highly reflective surface (like a white TPO roof or on the ground with light-colored stones), some bifacial module manufacturers claim up to a 30% increase in production just from the extra power generated from the rear. Bifacial solar panels perform best when they’re mounted near reflective surfaces, such as swimming pools, glass, or areas where the ground is reflective. That way the solar panel can capture energy from above and below. Sandy and snowy areas are high-performing environments for bifacial solar panels. They also do well when mo...

  ""The panchayat with eight villages has produced 600 units of electricity in a week. This initiative helps in the proper disposal of waste and reduces electricity bills.""" The Kanjirangal panchayat in Tamil Nadu’s Sivaganga district is setting a perfect example of sustainable waste management by turning trash into electricity. The panchayat with eight villages has produced 600 units of electricity in a week. This initiative helps in the proper disposal of waste and reduces electricity bills. Eight villages - Arasanipatti, Elanthangudipatti, Kanjirangal, Kakkanji Colony, Kamarajar Colony, Darasatha Nagar, Thendral Nagar and T Pudur - with over 14,000 people produce about 500 kg of garbage daily. After spending Rs 65 lakh from the National Rurban Mission, an electricity-generating unit was set up on Thirupattur Road, opposite the panchayat office to convert waste into electricity. Biodegradable and non-biodegradable wastes are segregated by sanitation workers ...

 1 .1 Core insulation tests This test is performed to check the  insulation between core and ground . 1.2 Operational checks on protection system Operational checks on: Cooler bank (pumps and fans), Breathers (silica gel or drycol), Temperature gauges (temperature of transformer oil – OTI and the windings temperature – WTI), Gas actuated relays (Buchholz, PRD, SPR etc.) and Simulation test of protection system. 1.3 Insulation resistance (IR) measurement Test reveals the  condition of insulation  (i.e. degree of dryness of paper insulation), presence of any foreign contaminants in oil and also any gross defect inside the transformer (e.g. Failure to remove the temporary transportation bracket on the live portion of tap‐changer part). Insulation resistance tests are performed  to determine the insulation resistance from individual windings to earth or between individual windings . Knowledge of the insulation resistance is of value whe...