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| 1 | Supplying, laying and testing HT UG cable [earthed], XLPE insulated, screened, steel strip armoured and pressure extruded PVC bedded, 11000 Volts grade [heavy duty] with aluminium conductor of size 3 Core 185 Sqmm laid in trenches / ducts, fixed to walls or passing through pipes and connecting up complete all as specified and as directed. |
| 2 | S & F Cable Jointing Kit for11 KV (earthed) grade XLPE cable for straight through joint heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sqmm including testing after jointing complete all as specified and as directed. |
| 3 | S & F Cable Jointing Kit for HT 11 KV (earthed) grade XLPE cable for indoor end termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 Sqmm including testing after jointing complete all as specified and as directed. |
| 4 | Dismantling existing PCC structure of any size and description complete all as directed |
| 5 | S & F box type CT of rating 400-300 / 5+5, Core 1:15VA class 0.5, Core 2:15VA, class 5P20, 31.5KA for 1 Sec including taking down old CT of any size and rating complete all as directed |
| 6 | S & F box type CT of rating 300-200 / 5+5, Core 1:15VA class 0.5, Core 2:15VA, class 5P20, 31.5KA for 1 Sec including taking down old CT of any size and rating complete all as directed |
| 7 | Earthing complete with Galvanized steel earth plate electrode of size 600x600x6mm thick buried directly in ground with earth pit not less than 2.25m deep below the normal ground level with top edge of plate not less than 1.5m below normal GL connected to galvanised earth strip of size 32x6mm as earth lead by means of bolts, nuts, check nuts and washers of Galvanized iron or steel all as shown in electrical plate No. 3 of SSR Part-I connected to earthing test point all as specified or indicated including testing on ompletion including taking out old earthing and as directed.[Note: The unit rate shall be deemed to include for excavation & earth work in any type of soil, PCC (1:3:6) type C1 chamber, MS angle iron frame 40x40x6mm, RCC 1:2:4 type B-1 cover 40mm thick with 8mm dia steel reinforcement bars at 150mm c/c both ways, MS handle 12mm dia, CI funnel and wire mesh, GI watering pipe 20mm dia medium grade for watering, GI protection pipe light grade 40mm dia, earthing lead upto 7.5m including providing charcoal or coke and common salt in alternate layers of 15cm compacted thickness all around the electrode complete all as specified in preambles of SSR Part-II and as shown in plate No. 3 of SSR Part-I.] |
| 8 | Supplying, Installing, Testing & Commissioning of 5 way RMU (2 incoming + 3 outgoing), 12KV, 630 Amps, outdoor, extensible type, SF6 Insulated, consisting of 02 Nos 630 Amps VCB, fixed, non draw out type as incoming and 03 Nos 630 Amps VCB as outgoing complete all specified and as directed comprising of the following:- |
| 9 | [A]RMU shall be floor mounted, 12 KV, 630 Amps, 21 kA for 3 Seconds, SF6 Insulated, Motorized, Outdoor extensible type, RMU with Air Insulated Bus Connected Metering unit, Type tested in line with latest IEC Standards, suitable for operations at a height up to 1000m above sea level and Ambient Temperature range from 5ºC to 50ºC without any de-rating, Switchgear and Busbar shall all be contained in a Stainless Steel Enclosure [Minimum 2.0mm thick SS 304 Grade] filled with SF6 at 0.3 Bar [300 hPa] Relative Pressure, RMU Tank shall provide Full Insulation and Switchgear shall be insensitive to the environment with Degree of Protection of IP67, Switchgear Operating Mechanism shall have an IP2X Protection and Cable Chamber shall have IP3X Protection, Outer Enclosure shall be IP 54 type tested, Powder Coated with Pure Polyester Based Paint, suitable for the site installation conditions, 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, Plug in type of extensibility must be provided and coupling busbar should not be exposed to air to avoid oxidation of busbars. Extension of cubicle shall require 450mm to handle and the gap between the coupled RMU’s must be within 10mm. |
| 10 | [B]Each Vacuum Circuit Breaker [VCB] shall be comprising of the following: [i]11 KV, 630 Amps, 21 kA/ 3s, 3 Pole Motorised VCB (Non draw out type) with 3 pole manual disconnector and 3 pole manual earth switch, Motorized Spring Assisted Mechanism and Series Trip Coil – 1 No. [ii]Self Powered Relay with O/C, S/C, E/F Protection. Relay shall have a Front USB for Laptop Interface, LCD Display, 10 Event Records, 5 Fault Records, min 2 setting group and keypad for setting parameters for the relay with Zero time delay for I>>, I>>>, I0>> & I0>>> setting groups - 1 No[iii]Resin Cast ring core ProtectionCT, Plate mounted type : 100-50/1+1A, 5P120, 2.5 VA-01 Set.[iv]Live Cable Indicator with indications at the Front and Three Inlets to check the Synchronization of Phases – 1 No[v] Making capacity - 52.5 kAp[vi]Cable Termination Bushing suitable for up to 1 Run, 3 Core, 240 Sq.mm, XLPE Cable – 1 Set[vii]Cable Termination Cover Boots [Push on type] – 1 Set[viii]Circuit Breakers shall have Two 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 unauthorised operations. An operating mechanism shall be used to manually close the circuit breaker and charge the mechanism in a single movement. An independent mechanism shall be fitted for the 3 Positions Earthing Switch and Disconnector Circuit breaker shall be fitted with a local system for manual tripping by an Integrated Push Button. There shall be no automatic reclosing. Circuit Breaker shall have a min of 2000 Mechanical and Electrical Operations. |
| 11 | [C] Air Insulated Bus Connected Metering Unit comprising the folloing:[i] Air Insulated Enclosure with necessary Bus Connection – 1 No[ii] PT 11KV / √3 / 110V / √3, 50 VA, Class-1.0 – 1 Set[iii] Multi Function Meter, Digital Type [Displaying A, V, PF, Hz, KVA, KW, KVAR, KWH, KVARH etc. Class 1.0 / 0.5] with RS485 Port for Communication in Modbus Protocol. - 01 Set[iv] R / Y / B Indicating Lamps – 1 Set[v] 11 KV / 230V AC, Class 1, 500VA Control Transformer – 1 No[vi] Battery and Battery Charger, 12 Ah, [I/P-230V AC, O/P - 24V DC] – 1 No |
| 12 | Notes:[a]An operator situated in front, lateral and rear [A-FLR 21 kA – 1 Sec, Downwards Exhaust, for Tank as well as Cable Compartment] of the RMU Switch board during an internal fault shall not be exposed to the effects of Arcing. Internal ARC Type Test Report for IAC AFLR 21 kA for 1 Sec for both Tank & Cable Box shall be submitted.[b]All operations shall be from front of the RMU, including access to cable bushings. Bushings along the sides or the rear of the RMU are not acceptable.[c]Construction of Plinth / Foundation for 11KV RMU: The rate quoted is deemed to be including the cost of Plinth / Foundation and shall not be paid as extra on this account. The foundation shall consists of Two Parallel Brick Walls built using bricks straight or curved on plan to any radius built in Cement Mortar 1:6 of length 2.10m, suitable thickness and height as per the manufacturer’s instructions over PCC Concrete Bed of 150mm thick in PCC 1:4:8, Type D-2, using 40mm graded stone aggregate over 150mm thick Hardcore of gauge not exceeding 63mm of broken stones or boulders, deposited, spread and levelled in layers not exceeding15 cm thick watered and rolled, over 150mm thick Sand Bed, rendering to brick surfaces, 15 mm thick in Cement Mortar 1:4, and finishing the top surface even and smooth without using extra cement, applying Three coats of white washing including earthwork excavation of pit size 2.10 X 1.20 X 0.60 Metres complete all as per manufacturer’s recommendations, drawings, as specified and as directed.[d]The rate quoted is also deemed to be including the cost of disconnection of HT Cables up to 3 Core, 240 Sq.mm from existing 2 Pole / 4 Pole Structures, removing of cable loop and reconnection to RMU complete all as specified and as directed by the Engineer-in-Charge.[e]End termination joints shall be measured and paid separately.[f]There should be electrical interlock established between both incomers ensuring one incomer only switched on at any time. In addition pad locking facility to be provided in both incomers. Rate includes pad lock (2 lock & 1 key)[g]The make of RMU/ VCB/ vacuum interrupter/ Relays/ FRTU offered shall be of same make. Different makes shall not be accepted. |
