WBPWD/EE/BED/e-NIQ-13/2022-23

Amount

Sub Head-I : Transformer & HT Cable

11KV / 415V, OIL TYPE TRANSFORMER

SITC of IP 43, 11KV/415 V, 800 KVA, Oil Type transformer as per specification below ( Make; Crompton/ BHEL/ Volt Amp Varoda/ Kirloskar/ Raychem/ Schneider/ Energy Pack) Applicable standard: IS: 1180 NEW LEVEL 1 With Latest Modification (if any) Rating: 800 KVA, 3 Phase, 50 Hz, Delta Star. Type: 3 Phase, Copper Wound, Oil Cooled Voltage Ratio: 11000 Volt / 415 Volt Links/Tappings: OFF Circuit Links, Tapping Range +5% to -5% in steps of 2.5 % Tap Position configuration diagram shall be provided. Cooling: ONAN Painting: As per IS: 5 ( Painting with synthetic enamel) Vector Group: Delta / Star and Dyn11 Class of insulation: A Temp rise of Tap Oil/ Winding (Deg C) : 40 deg /45 deg.

The core and coil assembly shall be securely fixed in position so that no shifting or deformation occures during movement of transformer or under short circuit stress. Transformer losses shall be gurrented as below: Total loss @ 50% Loading: 2.2 KW ( MAX) Total loss @ 100% Loading: 6.4 KW ( MAX) % Efficiency ( Minimum) : At Unity PF i) 99.23% at full Load ii) 99.35% at 75% Load iii) 99.43% at 50% Load

% Efficiency ( Minimum) : At Unity 0.8 PF i) 99.04% at full Load ii) 99.19% at 75% Load iii) 99.29% at 50% Load

%Impedance Volts at 75 deg C rated current and frequency Less than 5% % Regulation:- a) At Unity PF i) with full load :- 0.78(Max) %Regulation:- a) At 0.8 PF iii) with full load:- 3.57 (Max)

Termination HV/LV: HV cable box with terminals for cable finishing ends of sutiable rating. LV cable box extended copper bus bar has to be provided for multiple cable finishing for suitable rating.

Testing:- All routine tests as per relevant IS 2026 have to be conducted at manufacturer's works. The manufacturer should have in-house test facilities and should arrange for type test i.e. impulse test & temperature rise tests on chargable basis, if asked for . Terminal arrangement:- HV: cable box; LV: LV cable box Enclousure :- Sheet steel with proctection , painting should be epoxy/as per latest standard with paint shade 631 to IS-5 Basic insulation level for HV:- 75 KV PK, class of proction -IP-55

Temperature Scanner:- Tranasformer should be provided with RTDS for sensing winding tempertures & oil temperature.

Dial type temperature measuring devices for display of oil & winding temperature.

Making testing arrangement and submitting the test report for high voltage testing of specified voltage incl. checking & testing of all HT / LT equipments by authorized firm of Directorate of Electricity & commissioning the installation after obtaining the Approval of Directorate of Electricity.The scope shall be also included the necessary approval from Authority also.

HT CABLE

Supplying of 11KV (UE) Grade XLPE Aluminium conductor, PVC sheathed, armoured HT cable conforming to IS 7098, of earthed system of following size. [ Make : Gloster / Polycab / Havells ] (From consumer HT gear to transformer) a) 3 Core 300 Sq.mm

Jointing of HT Cable of 11 KV Grade 3 core 300 sq mm XLPE (E) cable incl supply of necessary jointing materials & compound ( Heat Shrink cable jointing kit of approved make) for switch gear & transformer terminations of HT sides incl. testing as per G.S ( Raychem/Mseal/3M) a) 3 Core 300 Sq.mm

Supply & Drawing 1.1 KV Grade 7 Core 1.5 sq.mm PVC Armoured Copper Cable from Transformer WT relay to VCB WT relay for Power & Control Supply as per direction of EIC

Sub Head-II : EARTHING

S & laying 1.1 KV Grade 240 sq. mm. single core multistrand PVC insulated flexible Aluminium Cable in suitable size of PVC flexible pipe (reinforced) from nutral earth busbar to transformer point as required (for Transformer neutral earthing) including Socketing both sides. [Gloster/polycab/Havells]

Earthing with 65 mm dia GI pipe (TATA-Medium)x 6.0 Mts. long and 1 No. 50 mm x 6 mm galvanized (Hot Dip) steel strip (4 Mts. long), 20 mm dia x 125 mm long galvanized bolt, double nuts, double washers including finishing both ends by making holes etc. and S & F 65 mm dia GI pipe (ISI-Medium) protection (3 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level to an average depth of 6.65 Mts. [ For Transformer neutral earth]

Earthing with 65 mm dia GI pipe (TATA-Medium)x 3.0 Mts. long and 1 No. 50 mm x 6 mm galvanized (Hot Dip) steel strip (4 Mts. long), 20 mm dia x 125 mm long galvanized bolt, double nuts, double washers including finishing both ends by making holes etc. and S & F 65 mm dia GI pipe (ISI-Medium) protection (3 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level to an average depth of 3.65 Mts ( Transformer body earth )

Extra for providing masonery enclosure on the top of the earth electrode of overall size 86.36 cm x 86.36 cm x 46 cm deep (below Ground level) complete with cemented brick work(1:6) of 25 cm width duly plastered with cement morter (inside) CI hinged inspection cover of size 36.56 cm x 35.56 cm with locking arrangement, GI reducer including drilling of 46 nos.12 mm dia holes on the GI pipe.

Extra for treatment of soil by using salt & charcoal for plate electrode as to G.S.

Excavation of soil for installation of Earth Electrode and filling & ramming. For Soft Soil.

Supply & fixing earth busbar of galvanized (Hot dip) MS flat 65 mm x 8 mm on wall having clearence of 6 mm from wall incl. providing drilled holes on the busbar complete with GI bolts, nuts, washers, spacing insulators etc. as required.

Supply & fixing 75x45 mm "C" channel having length of 2 mtr. each channel incl. nuts, bolts and washer etc. ( For Transformer wheel support over the trench)

SUB HEAD III- EI Work for AC

Supplying and fixing double door 4 way Vertical TPN MCB Distribution board for 4 pole Isolator incomer with IP-42/43 protection, on angle iron frame on wall & mending good the damages to original finish incl. Inter connection with suitable size of copper wire and neutral link & provision for earthing attachment. Incoming arrangement- 100 Amp 4 pole isolator -1 nos Outgoing arrangement- 32 Amp TP MCB - 4 Nos. (Make- Legrand/ ABB/Siemens)

Supplying and fixing double door 8 way Horizontal TPN MCB Distribution board with IP-42/43 protection, concealed in wall after cutting the wall & mending good the damages to original finish incl. Inter connection with suitable size of copper wire and neutral link & provision for earthing attachment. Incoming arrangement- 32 Amp 4 pole isolator -1 nos Outgoing arrangement- 6 to10 Amp SP MCB - 24 Nos (Make- Legrand/ ABB/Siemens)

Cutting channel of 43 mm x 43 mm size on masonry wall incl. S&F heavy gauge polythene pipe dia as stated below, by means of iron hooks and supplying and drawing 18 SWG GI Wire as fish wire incl. mending good damages to building works a) 25 mm dia 3 mm thick polythene pipe without earth continuity wire

Cutting channel of 40 mm x 40 mm size on masonry wall incl. S&F heavy gauge polythene pipe dia as stated below, by means of iron hooks and supplying and drawing 18 SWG GI Wire as fish wire incl. mending good damages to building works a) 19 mm dia 3 mm thick polythene pipe without earth continuity wire

Supplying and Drawing 1.1 KV single core stranded 'FR' PVC insulated & unsheathed single core stranded copper wire (Brand approved by EIC) of the following sizes in the prelaid polythene pipe and by the prelaid GI fish wire and making necy. connection as required a) 4x80/0.4 (10 sqmm) + 2x84/0.3 (6 sqmm) as ECC (From VTPN DB to HTPN DB)

b) 3x84/0.3 (6 sqmm) + 2x56/0.3 (4 sqmm) as ECC ( VTPN DB to Individual AHU Unit)

c) 2x56/0.3 (4 sqmm) + 1x36/0.3 (2.5 sqmm) as ECC ( For Individual FCU Units)

Finishing of the PVC insulated wire ends by socketting with pin/ ring type copper sockets and insulated tapes etc., including supplying sockets, tapes a) 4 sqmm

b) 6 sqmm

c) 10 Sq mm

d) 2.5 sq mm

Supplying and fixing 4 way MCB SS enclosure with IP-20/30 protection, powder coated provision for two/four pole MCB, concealed in wall after cutting the wall & mending good the damages to original finish incl. painting,connection & provision for earthing attachment with following MCB: a) 32 Amp TPN MCB (for supply of power to individual AHU unit. This unit to be installed at the nearest place of AHU)

Supply & Fixing 240 V, 25 A, Modular type starter (Brand approved by EIC) with 25A Modular switch type DP MCB (C Curve) and 4 Module GI Modular type switch board with 4 Module top cover plate flushed in wall incl. S&F switch board and cover plate and making necy. connections with PVC Cu wire and earth continuity wire etc. ( For individual FCU unit)

Supply & Fixing 240 V, 25 A, 3 pin Modular type plug socket (Brand approved by EIC), without plug top and switch with 2 Module GI Modular type switch board with top cover plate flushed in wall and making necy. connections with PVC Cu wire and earth continuity wire etc.

Supply & Fixing 240 V,25 A, 3 pin Modular type plug top with indicator (Brand approved by EIC) & necy. Connections.

Supply & Fixing of perforated GI cable tray with perforation not more than 17.5% suspended from ceiling incl. S&F GI connector, 6mm dia MS suspender, bolts & nuts, steel fastener etc. as required of the following size. Incl. Al painting of MS support. Without angle iron support 150x50x1.25mm (18SWG)

Supply & Fixing of perforated GI cable tray bend with perforation not more than 17.5% suspended from ceiling with two nos. suspenders & 25x25x3mm angle iron for supporting the cross member incl. S&F GI connector, 6mm dia MS suspender, bolts & nuts, steel fastener etc. as required of the following size. Incl. Al painting of MS support. 150x50x1.25mm (18SWG)

Supply & Fixing of perforated GI cable tray tee with perforation not more than 17.5% suspended from ceiling with two nos. suspenders & 25x25x3mm angle iron for supporting the cross member incl. S&F GI connector, 6mm dia MS suspender, bolts & nuts, steel fastener etc. as required of the following size. Incl. Al painting of MS support. 150x50x1.25mm (18SWG)

(Note :- Rate should be quoted inclusive of all taxes and duties including G.S.T.)

SHREE GOURI ELECTRIC ENTERPRISE

T.D.K. ENTERPRISE