supply of 3 sets of 220 kv , 1250 a motorized pantograph isolator with structure supply of 3 sets of 220 kv , 1250 a motorized pantograph isolator with structure for the use at 220 kv substation , ambalmughal in connection with the capacity enhancement work of m/s bpcl-kr , design , manufacturing , inspection , testing , supply and delivery of 245kv , 1250a , 50ka for 1sec , pantograph isolator without earth switch for 220kv substation , ambalamugal , in accordance with the specifications , and other requirements mentioned , in the short tender document , complete . loading &unloading , transit insurance are also in the scope of the contractor . . note: ( amount corresponding to gst , frieght ( if any ) etc for per unit shall be shown in the respective columns . othewise the amount shown in the column total amount with taxes will be considered as all inclusive ) , design , manufacturing , inspection , testing , supply and delivery of 245kv , 1250a , 50ka for 1sec , pantograph isolator with earth switch for 220kv substation , ambalamugal , in accordance with the specifications , and other requirements mentioned , in the short tender document , complete . loading &unloading , transit insurance are also in the scope of the contractor . , spare- gear box assembly .