supply, installation, testing and commissioning, of 10 nos 250 kva step down transformers and 04 nos 1000 kva step up transformers to lakshadweep electricity department , 250 kva, 11 / 0.433kv, outdoor oil immersed ( step down ) distribution transformers, including all accessories as per is: 2026 ( latest ) and technical specificationto lakshadweep electricity department. , 1000 kva copper wound 11000 / 415v ynd11 3 phase 50 hz onam outdoor type step up transformer with first fill of oil with cable boxes at ht and lt sides, with off circuit tapings of + / - 5 % in step of 2.5 with all standard fittings and parameters conforming of is 2026 for transformer and is 335 / 72 for oil.