PROVISION OF RMU AND TRANSFORMER FOR EXTERNAL ELECTRIC SUPPLY SYSTEMS AT INCS BHANDUP UNDER CWE (SUBS) MUMBAI

Supply, installing, testing and commissioning oil type, step down Transformer, Outdoor type, level - 3, HT 11 KV, 3 phase, LT 433 volts, 50 Hz, 3 phase 4 wire, dry cast resin type, naturally air cooled, electrolyte grade, copper wound in accordance with vector group DYN 11 with neutral brought out on LV side with tapping on HV side to vary secondary voltage upto +or - 7.5 % in steps of 2.5% with externally operated off load type tap changing switch, locking arrangement, BEE 3 star rating , ONAN type complete with all standard fittings all as specified and directed by engineer-in-charge of capacity 160 KVA. with following technical features:- (Make: As per approved list of makes) a) Rating- HV-11 KV, LV 433 volts b) Winding connections- HV-Delta, LV-Star c) Tapings on HV : (+) or (-) 2.5%, total : 7.5%, OFF Circuit links. d) Insulation class - 'H' e) Applicable Standards -latest IS 2026 f) Enclosure/housing- made of not less than 2mm thick CRCA sheet , IP-67, for Outdoor location, powder coated, duly ventilated. g) Termination- (i) HV & LV cable box on outside for easy connection. (h) HV&LV cable glands of standard rating. j) Duty - Distribution transformer. k) Noise level:-Less than 69 Db at 1 mtr. l) Full load losses :- As per latest IS. m) No load losses:- As per latest IS. n) Cooling- Cooling fans & exhaust fan to be provided inside of enclosures to enhance the natural cooling system. o) Protection Device (i) Protection relay against temperature rise to trip VCB and alarm be also provided to sound during high temperature of winding. (p) Surge protection (q) Protection against over current and earth fault. (r) Conservater tank, silica gel breather, explosive vents, bidirectional flat roller and lifting lugs, dial type thermometer packet. Note :-i) Any accessories required for installation and commissioning,civil works for plinth and not covered in schedule shall be provided by contractor without extra cost to the department. (ii) The Contractor shall submit constructional drawing, detailed specification, safety measures, and technical parameters, make of switch gear, size of panel board for approval of Accepting Officer. (iii) The Contractor has to arrange factory inspection for routine test at factory in presence of rep nominateed by Accepting Officer.

Design, Supply, Erection, Testing and Commissioning of 11 KV, 400 A, 21KA for 3sec, SF6 insulated, Manual , Outdoor , Right side extensible RMU , type tested in line with latest IEC standards fabricated from 3 mm thickness with CRCA sheet CPRI . The RMU shall be suitable for operations at a height up to 1000 meters above sea level and at 40 degree ambient temperature without any derating. The switchgear and busbar shall all be contained in a stainless steel enclosure filled with SF6 at 0.3 bar (300 hPa) relative pressure. The RMU tank shall provide full insulation, making the switchgear insensitive to the environment with degrees of protection of IP67 . The switchgear operating mechanism shall have an IP2X protection and cable chamber shall have IP3X. Accidental overpressure due to an internal arc is limited by the opening of the safety valve, at the bottom of the metal enclosure, away from the operator. An operator situated in front, lateral (A-FL 21kA – 1sec, downwards exhaust, for tank as well as cable compartment) of the RMU switchboard during an internal fault will not be exposed to the effects of arcing. Internal Arc Type Test Report for IAC AFL 21 kA for 1 sec for both tank & cable box should have been for minimum 3 way / 3 Function RMU. All operations shall be from front of the RMU, including access to cable bushings. Cable bushings along the sides or the rear of the RMU are not acceptable. 11KV, 4 Way Ring Main Units ( CCT2T2) - Two isolator and two breakers Each of the above Ring Main Unit shall comprise of the followings: A. Load Break Switch (LBS) each comprising of the following – 02 Sets (i) 11 KV, 630A, 21KA for 3sec Manual Load break switch; with built in line side manual earth switch. Earthing should be completed within 2 operations only (i.e 1. Main switch - OFF, 2. Earth switch - ON). LBS shall have 3 positions, open or disconnected, closed and earthed, and will be constructed in such a way that interlocking prevents unauthorized operations. LBS and earth switch shall have a min of 1000 (M1) mechanical operations , and 5 nos closing operations at rated SC current. LBS should have 100 electrical operations at rated current – 01 No (ii) Position indicator through clear front mimic in line with IEC 62271-103 -01 No (iii)Live cable indicator with indications (Voltage Presence Indicator) at the front and three inlets provision to check the synchronization of phases. VPI should be of same make as that of RMU -01 No (iv) Cable box with termination bushing suitable for upto 2 RUN 3Cx300 Sq mm, XLPE cable-01 No (v)Fault passage indicator (FPI) with in-built Overcurrent, Short Circuit and earth fault indication . The FPI should be self-powered and should have internal lithium battery for external indication and setting of FPI in the absence of current. (vi) Cable Boots suitable for actual cable size-01No (vii) Auxilary switch : LBS - 2 NO +2 NC, Earth switch - 1 NO + 1 NC- 01No (viii) Mechanical operation counter -01 No B. Vacuum circuit breaker (VCB) each comprising of the following -02 Sets

(i) 11 KV, 400 A, 21KA for 3sec Manual VCB with spring assisted mechanism and series trip coil; with built in manual line side three position disconnector cum earth switch. Earthing should be completed within 2 operations only (i.e 1. Main switch - OFF, 2. Earth switch - ON). The circuit breakers shall have 2 positions: open or disconnected and closed. A separate and independent 3 position earthing switch and disconnector shall be fitted to open and earth the cables in such way that interlocks prevent all unauthorized operations. An independent mechanism shall be fitted for the 3 positions earthing switch and disconnector. Circit breaker shall have a min of 2000 mechanical and 2000 electrical operations at rated current and 50 nos of operations at rated short circuit current. Disconnector and earthswitch shall have a min of 1000 (M1) mechanical operations. The earthing switch shall be fitted with its own operating mechanism and manual closing shall be driven by a fast-acting mechanism, independent of operator action. -01 No (ii) Position indicator through clear front mimic in line with IEC 62271-103-01 No (iii) Self powered relay with O/C , E/F protection. Relay should have a front USB port for laptop interface , LCD display ,10 event records, 5 fault records with time stamp, min 2 setting group and keypad for setting parameters for the relay. Relay should be of same make as that of RMU – 01 No (iv) Suitable ratio CT 50-100/1 A, Class 10P5-5P10-5P10, 2.5VA for protection -01 Set (v) Live cable indicator with indications (Voltage Presence Indicator) at the front and three inlets provision to check the synchronization of phases.VPI should be of same make as that of RMU - 01 No (vi) Cable box with termination bushing suitable for upto 1 RUN 3Cx300 Sq mm, XLPE cable -01 Set (vii) Cable Boots suitable for actual cable size -01 Set (viii)Mechanical operation counter -01 No (ix) Emergency trip push button -01 No C. Accessories (i) Antireflex operating handle -01 no (ii)Manometer -01 No Make- ABB/Semins/L&T/Schnider/CG Note :-i) Any accessories required for installation and commissioning,civil works for plinth and not covered in schedule shall be provided by contractor without extra cost to the department. (ii) The Contractor shall submit constructional drawing, detailed specification, safety measures, and technical parameters, make of switch gear, size of panel board for approval of Accepting Officer. (iii) The Contractor has to arrange factory inspection for routine test at factory in presence of rep nominateed by Accepting Officer.

Fabrication Installationand commissioning of LT Panel , Outdoor type made of 2.0 mm thick Stainless steel grade 304 Sheet and angle Iron frame work 50 mm x 50 mm x 5 mm , cubical type , slopping canopy with copper bus bar of 300 Amps and with suitable mounting plate, frame and canopy, confirms to latest IS with following accessories : (a) Incomer- MCCB 250 A, 4 pole, 36 kA - 01 Nos (b) Outgoings (i) MCCB 160 A , 4 pole, 36 kA - 01 Nos (ii) MCCB 100 A , 4 pole, 25 kA - 01 Nos (iii) MCCB 63 A , 4 pole, 25 kA - 01 Nos (iv) MCCB 40 A , 4 pole, 16 kA - 01 Nos (v) MCB SPN 40 A , C Series - 01 Nos (vi) Digital panel meter for volt/Amp/KWH/H&PF, necessary CT- 01 No (vi) LED Indicating lamp set - 01 set of three (vii) Separate compart ment for installation of LT 3 phase CT meter NOTE:- (a) The constructional & general arrangement of drawings showing the size of panel, details of quantity & make of materials with technical particulars/ specification, necessary certification from above manufacture shall be submitted by the contractor for approval of accepting officer. (b) Any civil work involved in installation of panel board including making canopy for raincover deemed to be included in item rate.

Supply & fix Microprocessor based three phase electronic tamper proof, CT operated, energy meter for LT supply with optical communication port, accuracy class 0.5 voltage 3 x 240 V, 200/5 A conforming to IS: 13779 including enclosure fixed to wall/ floor complete.

Supplying, laying(in trenches/duct/fixed to wall/pole etc or such similar position), testing and commissioning of Electric cable HT 11 kV grade (Earth), three core, 95 sqmm nominal cross sectional area multistranded electrolytic grade aluminium conductor of H2/H4 grade as per IS:8130/1984 with latest version, PVC sheathed, galvanised wire armoured, heavy duty power cable with water free retardant cross linked polyethylene (TR-XLPE), manufactured strictly confirming to IS:7098 Part 2 -1985 amended up to date and shall be embossed with ISI, Year of mfg, size of cable, voltage grade, CM/L No.IS-7098 Pt-II, Manufacturer's name etc. confirming to the technical particulars/specifications as specified in the respective item/ clause of the tender, all as specified and directed at site by Engr-in-charge. Make - Finolex/Havells/Polycab Notes:- (i) The HT Cable shall be subjected to various test as per latest IS with upto date amendments in factory premises, in presence of rep nominated by AO before despatch of cable. The cost of the same is deemed to be included in unit rate of the item. Test report to be submitted to AO. IR & High voltage tests shall be conducted at site with suitable voltage before & after laying of HT cable and reading to be recorded jointly and test report to be submitted in triplicate. The cost of the same is deemed to be included in unit rate of subject item.

Supply and fix cable jointing kit for 11 KV (E) grade cable for outdoor termination heat shrinkable complete with jointing material and accessories suitable for 3 core, XLPE, armoured, Aluminium conductor cable of size 95 sqmm all as specified and directed.

Supply and fix cable jointing kit for 11 KV (E) grade cable for indoor termination heat shrinkable tuoch proof type complete with jointing material and accessories suitable for 3 core, XLPE, armoured, Aluminium conductor cable of size 95 sqmm all as specified and directed.

Supply, laying in trenches/ducts/along wall/through pipes etc, testing and commissioning LT cable, XLPE insulated, galvanized steel strip armoured, 1100Volts grade with multistranded aluminium conductor of cross sectional area 185 sqmm,3.5 core including making cable connections by providing necessary aluminium lugs duly crimped properly and stainless steel glands,nuts,bolts and washers etc complete in all respects, as specified and directed. Note :- (i) Quoted rates will inculde finding the cable routes and end connections of cables in case of multiple cables at a place.

Excavation in trenches n.exc 1.5 m wide and n. exc 1.5 m in depth and getting out in soft/loose soil for removing/laying of cables complete all as specified and as directed by Engineer-in-charge.