development policy manufacture, testing, supply and delivery of 11kv vcb panels ( scada compatible ) of assorted types, ratios under pspcl vendor development policy , extensible11kv incoming vcb panels ( scada compatible ) , complete in all respects as per item-i, of annexure-a of sec-iii `schedule of requirement’ with primary ct ratio 1800-900a , 1200-600 or 900-450a suitable for 220v / 24 v dc supply with interlocking arrangement. , extensible 11kv outgoing vcb panels ( scada compatible ) , complete in all respects as per item-ii, of annexure-a of sec-iii `schedule of requirement’with primary ct ratio 400-200a suitable for 220v / 24v dc supply with interlocking arrangement. , independent 11kv cap. control vcb panels ( scada compatible ) complete in all respects as per item-iii, of annexure a of sec.iii `schedule of requirements with primary ct ratio 600-300a, 400-200a suitable for 220 / 24 v dc supply. , extensible 11kv bus coupler vcb panels ( scada compatible ) complete in all respects as per item-iv with primary ct ratio 1200-600a suitable for 220 / 24 v dc supply. , extensible type station transformer vcb panel ( 100a ) ( scada compatible ) complete in all respects as per item-v, of annexure a of sec.iii `schedule of requirements with primary ct ratio 100a suitable for 220v / 24 v dc supply with interlocking arrangement.