|
| 1 | Supplying,fabricating,installing,testing and Commissioning of automatic mains failure control including auto by pass panel,suitable for 250 kVA DG set complete with relays,timers,set of CTs for metering & protection and energy analyser to indicate currents, line and phase voltages, frequency,power factor, kWh, KVArh and provisions of over load, short circuit, restricted earth fault , under frequency and elsewhere required, all complete interlocking and comprising with following items |
| 2 | 3 Nos. 400 amps 4 pole MCCB- 3 Nos (EB incomer/DG incomer/Load) 400amps 4 Pole AC-3 power contactors-2Nos ( EB/ DG) |
| 3 | 400A TPN Aluminium Bus bars |
| 4 | Auto/Manual/Test/off selector switch |
| 5 | 400/5A current transformer 15 P 10 accuracy for protection and 15 VA class 1 for metering- 2 set |
| 6 | Energy analyser unit to indicate current voltage frequency power factor and kWH -2Nos |
| 7 | RYB Indicating lamps for both incomers , ON/OFF/TRIP indications for all MCCB's and indications for load on mains and load on set |
| 8 | 20A Battery charger |
| 9 | AMF Relay of reputed make to facilitate the Main supply/ DG Supply for monitoring and controls. The selection of model/make of relay in under the discretion of the Engineer in-charge. |
| 10 | Supply |
| 11 | Installation |
| 12 | Shifting, Transportation,and Re-erection of 250 kVA DG set including all accessories from IITM Discovery campus-Thaiyur to IITM main campus at IIT Madras Chennai-36. The rate shall be inclusive of the chanrges for suitable truck for transport, loading and unloading charges, crane charges etc., as required. The approximate distance between IITM Discovery Campus at Thaiyur to IIT Madras Main Campus is about 35 km. |
| 13 | Supplying and providing the concrete foundation for a 250 kVA DG set weighing 6 tons shall consist of an RCC foundation block of size 2.5 m × 6.0 m × 1.0 m depth laid over 100 mm thick PCC (1:4:8 / M10) on firm soil, using M25 grade reinforced cement concrete with HYSD reinforcement (12 mm dia bars at 150 mm c/c in both directions at the bottom) with 75 mm clear cover, including all materials, labour, formwork, curing, and workmanship complete, designed to safely support the DG set load with adequate factor of safety |
| 14 | CABLES AND TERMINATIONS |
| 15 | Supplying& Laying of following sizes PVC XLPE insulated alu/cu Conductor armored LTUG cable in a 50 mm to 100 mm dia HDPE DWC pipe in a trench of 50cm wide and 75cm depth including earth work excavation in all soils and sub soils and back filling, consolidated in a regular interval of 25cm thick rammed and complying with standard specification including cable route markers in every 50m span. |
| 16 | 3.5c X 240 sq.mm ( Alu) |
| 17 | 3.5c X 70 sqmm ( Alu) |
| 18 | 3.5c X 50 sqmm ( Alu) |
| 19 | Supplying and making end termination with brass compression gland and aluminium lugs for following size of PVC insulated and PVC sheathed / XLPE aluminium conductor cable of 1.1 KV grade as required |
| 20 | 3½ X 240 sq. mm |
| 21 | 3½ X 70 sq. mm |
| 22 | 3½ X 50 sq. mm |
| 23 | EARTHING |
| 24 | Earthing with copper earth plate 600 mm X 600 mm X 3 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 metre long etc. with charcoal/ coke and salt as required. |
| 25 | Supplying and laying 25 mm X 5 mm copper strip at 0.50 metre below ground as strip earth electrode, including connection/ terminating with nut, bolt, spring, washer etc. as required.(Jointing shall be done by overlapping and with 2 sets of brass nut bolt & spring washer spaced at 50mm) Please Enable Macros to View BoQ information |
