ESTIMATE FOR THE WORK OF CARRIAGE OF 220KV DOUBLE FEEDER CONTROL PANEL FROM 220KV SUBSTATION SIKANDRA AGRA REPLACEMENT OF OLD CONTROL PANEL REPLACEMENT OF 220KV DEFECTIVE ISOLATORS ISOLATOR AUXILIARY SWITCH CT JUNCTION BOX ETC AT 220KV SUBSTATION

Amount

Safe carriage of 220kV double feeder panel from 220kV substation Sikandra Agra, to 220kV substation Muradnagar having distance approx. (250km), works included shifting of 02 Nos control panel from store/control room to suitable open place by means of labor & loading of these panels on a suitable vehicle by Hydra, proper tightening with rope at 220kV substation Sikndra Agra, unloading of these panels at 220kV substation Muradnagar and shifting of panel in to the control room.

Dismantling of old & obsolete existing 220kV feeder control panel commissioned on different bays installed at 220 KV Substation Muradnagar. Work consists of opening of all earthing flats from panel & opening of all foundation bolts/coupling panel bolts, thus to free the panel from grouting and also from adjacent panel.

Opening of all control cable connection from panel terminal board with extreme care and putting identification mark on them. Taking out all cables from cable glands thus to make free all panels.

Shifting of all dismantled panels from control room to store/said place with the help of crane or by other means about 150-200 Mtrs distance.

Erection of new panel with the help labor carefully at required place on grouted bolts, earthing of panel at two marked points with required size M.S flat. Work also includes any modification for mounting the panel properly.

Making required number of holes on base plate of panel for fixing cable glands of different sizes and then to fix cable glands in the holes, insert all control cable with proper size cable glands for making connection of control cable on panel terminal board properly.

Making all connections of control cables cores on terminal board of the panels as per drawing with proper ferruling and cable tags and proper dressing of all cables inside the panel along with supply of all cable glands , ferrule & tags etc.

Dismantling of old and defective 220kV Bus A and Bus B isolators installed on 220kV bus coupler bay, removing of jumper of both side, removing of earthing, dismantling of post insulators, Isolators base, removing of connecting pipes & operation mechanism etc. shifting of these dismantled isolator from site to store/ said place.

Erection of 220kV Post insulators on 220kV Isolator structure of 220kV bus coupler bay including modification in base of the isolator structure as per requirement of the new isolator base shifting of post insulators from store to site.

Erection of 220kV bus A and Bus B Isolators on 220kV bus coupler bay as per instruction manual and technical specification of isolators with its operating mechanism, proper alignment of all three phases including shifting of material/equipment's from store to erection site including all other associated work to complete the job satisfactory .

Dismantling of defective/damaged 220kV isolators auxiliary switch, after removing connection, disconnecting from main shaft etc.

Dismantling of damaged terminal connector (TB), TB housing plate work includes removing wire connection etc. of 10 Nos. 220kV isolators.

Providing and fixing of 220kV isolators auxiliary switch having 10 No NO contact and 10 Nos NC contact of standard make as per sample for bus bar protection scheme.

Providing and fixing of terminal connector (TB) of standard make as per sample.

Wiring from 220kV isolator auxiliary switch to auxiliary switch TB with the help of 2.5sq.mm wire with proper lugs, ferrules.

Replacement of damaged/rusted CT junction box of 200MVA T/F-II HV side work includes dismantling of damaged/rusted CT junction box after removing of cable connection, removing of earthing. Erection of new CT junction box on CT structure after doing modification as per requirement, laying of cable from CT terminal box to CT junction box( As 5th core for bus bar protection was not available on CT junction box), earthing of CT junction box with 50x6mm M.S. flat, cable termination with proper gland and ferrules in CT junction box and CT Terminal box.

Laying of 4Cx2.5 sq.mm cable from 220kV CB/Isolators to bus bar protection panel installed in control room of the substation.

JBS ELECTRICALS

msn construction company