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| 1 | CE Approved vide CE(Elect.)/Non-BSR/2025-26/D-1157 dated 23.03.2026 |
| 2 | SITC of 11 kV Factory Assembled Outdoor Package Sub-Station (PSS), Design and manufactured by the OEM. The PSS shall comprise of RMU, LT Switchgear (ACB), Transformer, etc ,The PSS should consist of following sections and their specifications as per A, B, C, D & E |
| 3 | A) HT Compartment: Ring Main Unit 11kV 630 Amps 21KA and above /1 Sec IAC AFLR 21 KA/1Sec. SF6 insulated, non-extensible, compact switchgear (Type VVV+M)consisting of Three Nos fixed Manual Vaccum Circuit Breaker (VCB )(manually operated and Operating Sequence of VCB Should be O-0.3S-CO-3Min-CO.or as per type test design) with Copper busbar in SF6 insulated stainless steel Outdoor enclosure of thickness of 1.6mm/ 2 mm and tank of stainless steel Outdoor enclosure of thickness 3mm with manometer. Interconnection between HT switchgear and transformer by Suitable Sized Aluminium un-armoured HT XLPE Cable. The HV switchgear and control gear should be confirming to IEC-62271-100,IEC62271-202, IEC-62271-200-2003 & IEC-60694-1996. The Gas tank of the RMU should be internal arc tested for 21KA and above /1 Sec. VI should be of make for which type test was done.- 1 no. microprocessor based Self powered numerical relay with over Current/ earth fault & short circuit protection with each VCB feeder. - 3 Nos. Protection CT shall be of Burden 2.5VA, ratio 50/1A, Class of Accuracy class 5P10 for O/C and E/F protection for each VCB feeder-1 No. Manometer - Metering Provision as per NDMC requirement for which Metering CT 40/1 A, 2.5 VA Class, 0.5 Accuracy and Metering BUS PT- 11000/√3 110V/√3 50VA Class 0.5 Accuracy. Digital mulitfunction meter CL -0.5 with RS485 Port. |
| 4 | B) Transformer: As recommended by OEM 11kV/433V, 3phase,50 HZ,DYN-11 Copper wound hermetically sealed oil type step down transformer having delta connection on primary side and star connection on secondary side complete with all modern fitting as given in the specification , off load tap changer (-10% +5% in the step of 2.5%) etc. as required with losses as per ECBC 2017 or updated , Class H with 115 Deg temperature rise allowed . - One No. Winding Temperature Indicator with Alarm and trip Contacts |
| 5 | C) LV Compartment: Incoming cum Outgoing with One number manual spring charged drawout type 4 pole 415V ACB with breaking capacity 50KA with Ics = Icu = Icw (1 sec) = 50KA with microprocessor release for over current, earth fault & short circuit protections. Interconnection between Transformer & LT switchgear using Aluminum Bus bars of ACB Current rating with heat shrinkable colored sleeves. |
| 6 | D) The Outdoor enclosure shall be made of 2.0 mm for Load bearing and 1.5 mm thickness for Non load bearing part, Galvanized Sheet Steel tropicalised to meet Indian weather conditions including all the partition Sheets & doors. The enclosure base shall be of 4.0 mm thickness Hot Dip Galvanized Sheet Steel. The entire Package Substation shall be Factory Assemble & Factory Fitted. The enclosure shall have IP54 degree of protection for HT & LT switchgear compartment IP-23 degree of protection for Transformer compartment. The Enclosure should be type tested for Internal Arc fault test to the tune of at least 21 KA for 1 second adhering to as per latest IEC 62271- 202. The offered enclosure should be type tested for K10 class temparature raise. Type test reports to be submitted. The enclosure exterior shall be powder coated. The compartment illumination lamp and space heater with door operated switch shall be provided for MV & LV compartment. Internal earthing connections by using 50x6mm GI Strips. |
| 7 | E) OEM of PSS shall provide Type test certificates for the RMU, Transformer & LT Switchgear. |
| 8 | Factory Tests: All test shall be conducted as per the QAP of OEM at the Manufacturing facility and same shall be witnessed by departmental Engineers. |
| 9 | Note: Cost of RCC Foundation / Steel Structure to be paid Extra. |
| 10 | Transformer Capacity 500 KVA, ACB Rating 1000 Amps. ( Complete rate- 5414826) |
| 11 | CE Approved vide CE(Elect.)/Non-BSR/2025-26/D-1157 dated 23.03.2026 |
| 12 | SITC of 11kV 630 Amps 21KA and above /3 Sec. SF6 insulated, outdoor duty (IP54) , Extensible / Non extensible type Ring main unit (RMU) manually operated in combination of VCB modules consisting of Copper busbar in SF6 insulated stainless steel Outdoor enclosure of thickness of 1.6mm/2 mm and tank of stainless steel Outdoor enclosure of thickness 3mm with manometer. The HV switchgear and control gear should be confirming to IEC-62271-100, IEC-62271-200-2003 & IEC-60694-1996. The RMU should be internal arc tested for 21KA and above /1 Sec with IAC-AFL classification for both Cable chamber and gas tank as per IEC 62271-200 . Vacum Interrupter should be same as used during type test of RMU. Each feeder of RMU should have voltage presence indicator. and VCB feeder should consist of 1 no. microprocessor based Self powered numerical relay with over Current/ earth fault & short circuit protection with each VCB feeder, 3 Nos. Protection CT shall be of Burden 2.5VA, ratio 50/1A, Class of Accuracy class 5P10 for O/C and E/F protection for each VCB., Right angle boots for all the feeder Modules, Remote trip, Emergency Stop, Cable cover interlocking, Trasnformer protection tapo card etc. All the type test certificates as per IEC and CEA from Third party NABL / CPRI / ERDA accrediated lab to be submitted. (Cost of RCC Foundation / Steel Structure to be paid Extra) |
| 13 | Extensible 4 way RMU with 4 no. VCB having 2 nos as incomer and 2 as outgoing. (Complete rate - 1958548) |
| 14 | Providing & Laying XLPE insulated & P.V.C. sheathed Armoured Aluminium cable confirming to IS :7098 P - I of 1.1 KV with H4- Grade electrolytic aluminium conductor confirming to IS 8130 of purity >99.6 %, round / flat strip armouring of cables, Inner / outer sheath confirming to IS:5831 in existing RCC / Hume / Stoneware / PVC pipe/ open duct/cable trench / Cable tray(with cable tie) including testing commissioning etc. as required of following size. |
| 15 | 50.0 Sq. mm |
| 16 | 3.5 core |
| 17 | 150.0 Sq. mm |
| 18 | 3.5 core |
| 19 | Providing & making heat shrinkable type indoor/outdoor/straight through terminations/ joint kit suitable for 11 KV / 33 KV (Earthed) cable with required components, prepration of cable ends. Type test report should be as per IS13573:2011 including testing etc. as required of following sizes. |
| 20 | 11 KV End Termination Kit Indoor type |
| 21 | 3 core 240/300 Sq.mm |
| 22 | Plate Earthing as per IS:3043 with copper Earth plate of purity >95% of size 600mm x 600mm x 3.0mm by embodying 3 mtr. below the ground level with 20 mm dia. G.I. 'B' class watering Pipe ,including all accessories like nut, bolts, reducer, nipple, wire meshed funnel, Heavy duty weather proof poly-propylene earth inspection chamber as per requirement of IS/IEC 62305 and tested as per IEC 62561-5 with lockable Jam free lid suitable for safe working load 60 kN of round / square size 250 mm, and Height 250 to 300 mm. and embodying the pipe complete with alternate layers salt and coke/ charcoal, testing of earth resistance for value of 5 ohms or less as required. |
| 23 | SITC of Copper Bonded rod Earthing with high tensile strength (more than 600 N / sq.mm low carbon steel rod molecularly bonded with Copper thickness (250 microns) and confirming to UL 467 of following size and length and as per point mentioned (a), (b), [c), (d), (e) below :- |
| 24 | (a) Bore a hole of dia. 100 mm of required length, Place the rod in the centre of Hole |
| 25 | (b)Earth enhancing compound to ensure the moisture content and electrical conductivity, 25 kg for 3000 mm. The compound shall be tested form NABL accredited lab for low resistivity (less than 0.12 Ohm - meter) & high conductivity in nature with carbon as a major content in accordance with IEC 62561-7 |
| 26 | © Connect the rod with copper Strip/Conductor/Wire with suitable clamp made from tinned copper and SS 304 Bolt |
| 27 | (d) Place Heavy duty weather proof poly-propylene earth inspection chamber as per requirement of IS/IEC 62305 and tested as per IEC 62561-5 with lockable Jam free lid suitable for safe working load 60 kN of round / square size 250 mm, and Height 250 to 300 mm. |
| 28 | (e) Testing of earth resistance for value of 5 ohms or less as required. |
| 29 | (f) Test certificates for confirming above standards from OEM is mandatory. |
| 30 | 17.2 mm thick and 3 Mtr. Long |
| 31 | Supply & Laying following size earth strip in horizontal or vertical run in surface by means of Earth strip DMC Insulator including riveting/ soldering/ welding, Jointing shall be done by overlapping double the width of strip and with 2 set of Brass (for Cu strip) / GI (for GI Strip) nut bolt & spring washer spaced at 50cm making connection etc. as required. |
| 32 | 25mm x 3mm copper strip |
| 33 | 25mm x 3mm G.I. ( Hot Dipped ) Strip |
| 34 | Add GST (18%) on Total Costruction Cost Please Enable Macros to View BoQ information |
