tender for manning, operation and maintenance of (i) 132/6.6 kv substation having 2 nos of 10/16mva power transformers along with allied equipment required spares at peddapur 132/6.6 kv substation under eam cell-ii, peddapur, transmission division no.ii, patancheru (ii) 11/3.3 kv substation having 2 nos x 1000 kva transformers, 11/0.433kv, 500kva and 250kva auxiliary transformers along with allied equipment and 3.3kv pumping station having 3 nos 220kw/3.3 kv and 1 no x 110 kw/3.3 kv vertical pump sets along with allied equipment at jack well, singoor under eam cell-ii, peddapur,transmission division no.ii, patancheru for a period of one(1) year