tender for annual maintenance contract of plc based cubical type synchronization panel for dea sets for idc at te building dlf faridabad.; 1 comprehensive maintenance of plc based cubical type synchronization panel for 4 nos 600 kva dea sets installed in telephone exchange dlf by providing specialized man power i/c providing periodical servicing with repair and replacement of defective components of panel, as per specification attached etc complete as required. (note: details of panel attached in the annexure) (qty: 1no) 2 replacement of existing faulty batteries for the the synchronization control panel systemi/c disconnection of faulty battery and supply and fixing of following capacity batteries along with battery terminals and leads, as directed by the engineer incharge i/c testing comissioning etc complete as reqd -batteries with minimum 24 months warranty).(note:- the old dg battery shall be retained by the agency and rates may quoted accordingly.) (m/s exide or ss make) 3 7ah, 12volts sealed maintenance free lead acid 4 note: - dismantled material in respect of item no- 2 shall be the property of the contractor. hence rate should be quoted accordingly.