AUGMENTATION OF ELECTRICITY SUPPLY AT MD ACCN (JCOs/OR) OF MIL STN HALDWANI UNDER GE RANIKHET

Supply, installation, testing and commissioning of transformer suitable for 250 KVA step down floor mounted out door type, 11/0.433 KV, 3 phase, 50 Hz AC double wound core type, with energy efficiency level -3 as per IS 1180 : 2014 (Part I ), copper wound, oil immersed, air naturally cooled with external cooling tubes, transformer delta connection on HV side and star connected on LV side in accordance with vector symbol Dyn-11 (vector group 4) with neutral brought out on LV side with earthing and having tapping on HV side for constant out put so as to alter/vary secondary voltage by + 7.5% in equal sep of 2.5% changed by means of manually operated "Off Load" taps changing gear. The voltage regulation shall be as per IS including first fill of transformer oil as per IS-335 and including all fittings/accessories as specified in SSR Part-I and IS-1180. The limit of temperature rise after continuous full load run as specified in IS-1180 shall be suitably adjusted to suite the maximum ambient temperature of Haldwani. The transformer shall be complete with the following fittings and accessories :- (a) Oil conservator tank with fillings holes and cap filter type drain valve and oil level gauge. (b) Silica gel breather with connecting pipe, first fill of dehydrating agent. (c) Explosion relief mounted on tank with double diaphragm and equalizer pipe connected to conservatore air tank (pressure release valve). (d) Air release valve plug. (e) One cable box on LV side (Secondary) consisting of 04 Nos porcelain bushing with nuts, washers & bushing rods with 01 cable gland suitable for reception of taking out suitable size cable, including gland joints complete all as specified. (f) Explosive vent. (g) 01 No 100 mm dial type thermometer vapour pressure type having range 0-120 degree centigrade with max temp indicator and resetting device incl, max reading pointer washer etc. (h) Thermometer pocket on tank cover (j) 04 Nos plain solid CI detachable rollers. (k) Two Nos earthing terminals marking plate. (l) Rating plate and terminal marking plate (m) Extra bushing for neutral outside the cable box brought on LV side. (n) First filling of oil conforming to IS and tested up to 60 KV dielectric strength. (o) Lifting lugs (p) Oil drain valve with plug. (q) One cable box on HV side (Primary) consisting of 01 cable gland suitable for reception of taking in HT cable including gland joints complete all as specified. (r) Dehydrating breather with first filling of dehydrating agent. (s) Two earthing terminal on tank body to facilitate fixing of 32x6mm GI Strip. (t) Rating plate with terminal marking plate. (u) Inspection cover. (v) Extra bushing for neutral out side the LV side. (w) Hand hole of sufficient size to access interior of tank. Note :- Transformer shall be fixed on PCC platform with including PCC 1:3:6 type C 2 with 40mm graded stone aggregate of size 2.80x2.80x1.20 mtrs high or including necessary foundation work of appropriate size as directed or as per manufactures recommendation. Concrete to be deemed its above said items.

Supply, laying, jointing, commissioning and testing XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured electric cable in trenches on poles/through duct, (Heavy duty) with std aluminium conductor, 11/6.35KV (UE) grade of size 95 Sqmm 3 Core.

S&F cable jointing kit for 11 KV (Earthed) grade cable for out door termination heat shrincable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete.

Supply and laying cable PVC insulated PVC sheathed, galvanised steel strip or wire armoured, electric power cable (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 50 Sqmm 3.5 core.

-do- but 185 Sqmm 3.5 core.

-do- but 240 Sqmm 3.5 core.

-do- but 70 Sqmm 3.5 core.

-do- but 16Sqmm 4 core.

-do- but 25Sqmm 4 core.

-do- but 10Sqmm 4 core.