Design, Manufacture, Factory testing, Supply, erection, testing at site and Commissioning of each one 110/22KV, 25MVA Power Transformers with allied equipments, civil works for bay extension works at Kurumbapet and Marapalam 110/22KV SS.

Copper wound 25MVA, 110/22 -11KV, Dyn 11, 3 Ph, 50Hz, Power transformer with OLDC, RTCC & other accessories with 10% extra oil.

Handling, erection, testing and commissioning of Complete set of 22KV, 1250A, 25KA, HDB motorised isolator, 3ph without earth switch including isolators.

C&R Panels

Supply and erection of 110/22-11KV Transformer protection panel fitted with numerical relays (HV & LV side) with automation.

Supply and erection of control panel for 110/22-11KV Transformer bay (HV & LV side) with automation.

Structure materials

Lattic struture (Non standard structures)

Pipe structures for 110KV equipments

foundation bolts including nuts check nut and washers for lattice and pipe structure.

145KV equipments

Complete set of 145KV/31.5kA/ 1250 Amps, SF6 Circuit Breaker along with support structure (spring operated).

Complete set of 145KV/31.5kA/ 1250 Amps HDB Motorised isolator, 3Ph with one earth switch.

CIVIL WORKS including construction of Fire Protection wall, modification and alteration of existing Power Transformer Plinth and equipment foundations, yard concreting, stone spreading in the yard and others as per department specifications and Drawings.(complete including Supply of all civil, steel materials, GI foundation bolts for each job included and includes all charges for crane, transport. labours and experts etc., )

145 KV Solid core post isolators for the above Isolators.

145kv, 31.5KA, 1200A Current Transformer 1ph with 120% extended current rating ratio 1200-900-600-300/1-1-1-1A.

98KV Lighting arrestor 1ph class 3 (gapless) with surge counter and monitor.

145KV Solid core post insulator.

22KV Equipments

Complete set of 145KV/31.5kA/ 1250 AmpsHDB Motorised isolator, 3Ph with out earth switch.

Complete set of 22KV, 1600A, 3pH, 25KA, VCB along with supporting structure (spring operated).

22KV, 1000A, 25KA Current Transformer 1ph with 120% extended current rating ratio 1000-500-250-125/1-1-1-1A.

18KV Surge arrestor 1ph - Class 2

Fire Protection System

Fire protection equipmets (Yard) supply & erection of 9litre water type

4.5kg DCP type

4.5kg CO2 type

50 Ltrs mechanical foam type

Steel bucket with Steel stand suitable for total 8 nos. of Buckets in 2 rows filled with sand.

Illumination system:-

Outdoor lighting including all accessories etc., (a) Lighting panel (type ACP-2 asper specification)

Lighting fixtures LED Flood light luminaries type FL-1 (15W) as per tech. specifications.

Complete set of 22KV, 1250A, 25KA, HDB motorised isolator, 3ph without earth switch including isolators.

Earthing

Earth pits as required for equipmet, power transformer, structure earthing including earthing materials, earthwire, risers, auxillary earth mat ets., (excluding main earth mat).

Supply and laying of 40mm MS rod for main earthing including fabrication as required etc.,

Handling, erection, testing and commissioning of the following items. Each of this item work also includes inter pole cabling, provision of 75x12mm/50x6mm GI flats for Earthing and allied fasteners and spring Washers, laying, terminations, testing, commissioning of power cables and multistrand copper control cables of various cores/sizes( supply of all suitable sizes luges and ferrules included) required between the control room building and the switchyard as per site conditions, RTU integration and other works as required for this work. A) Integration of newly erected Pr. Tr. and equipments with existing RTU.

Buchholz relay complete with contacts

Local & Remote winding temperature indicator with contacts

Oil temperature indicator with contacts

Cooler fan with motor

Fuses(One set consists of complete replacement for one transformer)

Indicating Lamps(One set consists of complete replacement for 1 transformer)

Winding Temperature sensing element

Oil Temperature sensing element

Gas collecting bottle

Oil sample bottle

Pressure Relief Device

Oil Sample syringes - 50ml

Control & Relay Panel spares

IED/Relays 61850 compatible communicable Distance protection relay

IED/Relays 61850 compatible communicable Transformer Differential Protection relay

IED/Relays 61850 compatible communicable Bay controler-cum Protection relay

Multifunction transducer 0.2s class accuracy with RD 485 port

Aux. Relay

Fuses & MCBs ( All Type & Ratings) - 2 Each

Indicating Lamp (All colours) - 2 each

Insulators disc spares

110KV side solid core Bus Post insulator spares

Mandatory spares (As mentioned section project)

145KV Equipments

Supply & erection of Power & Control Cables along with associated accessories like clamps, glands, lugs and straight joints etc. All required size of Power Cables PVC 1.1KV Grade (Aluminium) and all required size of Copper Control cable (pvc) 1.1KV Grade with all accessories like clamps, glands, lugs, straight joints etc.,

Tripping coil

Closing coil

Breaker control switch (TNC Switch)

Spring charge limiting switch

Spring charge motor

MARAPALAM 110/22KV Sub-Station: Design, Manufacturing, Testing at manufacturer site, Transportation and supply (at site) of the following items. This also includes supply of all suitable sizes of clamps wherever required and all other items required for satisfactory functioning of the particular items :- In view of space constraint the absract of the items are mentioned below. Therefore, bidders are requested to quot their price as per the detailed Bill of Quantity (BOQ) provided in the Section VI of the General terms and condition of this tender document: Supply of the following items as per the Tender Technical specification. Rate should be quoted along with GST No. and prescribed rate of GST.

145 KV, 1200A, 31.5kA Current Transformer 1PH with 120% extended current rating, Ratio: 1200-900-600-300/1-1-1-1A

145 KV, 1250 A, 3 ph,31.5kA, SF6 Circuit Breaker along with support structure

98KV LA Complete unit

Surge counter

98 KV Lightning Arrester 1PH - class-3 (Gapless)

22KV Equipments

145 kV Solid core Post Insulator

Tripping coil

Closing coil

Breaker control switch (TNC Switch)

Spring charge limiting switch

Spring charge motor

22 kV 1600 A,25kA VCB (3 phase) along with support structure.

22 kV, 1250 A, 25kA, HDB motorised Isolator (3 phase) without earth switch

18KV LA Complete unit

Surge counter

22 kV Bus post insulator

Mandatory spares for 110/22KV 25MVA Power Transformer and equipments:

Erection, Testing and Commissioning of :- ( a) Copper wound 25MVA, 110/22-11KV, Dyn 11, 3 Ph, 50Hz Power Transformer with OLDC, RTCC panel, & other accessories with 10% extra oil, (b) Nitrogen Injection fire fighting system with complete accessories, (c) RTU integration of Power transformer operation as per the requirements, (d) Laying, termination, testing and commissioning of power cables and multi-strand copper control cables of various cores/sizes required between the control room building and the switchyard as per site conditions and other works as required for this work. The work also includes the followings: (i) Construction of new Power Transformer civil plinth (supply & construction included) (as per the drawing to be furnished by the contractor and approved by the PED during detailed Engineering) with embed rails for placing and removal of the Power Transformers on the plinth with smooth movements. (ii) Construction of suitable size oil sump pit (supply & construction included) (as per the drawing to be furnished by the contractor and approved by the PED during detailed Engineering) around the Power Transformer plinth with provision of metal grills on top of the oil pit. The pebbles of suitable size has to be spread over the metal grills for smooth/easy access to Power Transformer. (iii) Provision of (Supply & erection included) strom water draining system (The water should be drained out side the oil sum pit by suitable means). (iv) Provision of (Supply & erection included) separate Burnt oil storage tank at appropriate location for draining the burnt oil from the oil pit. Provision of suitable foundations for cooling system as per the requirements (v) Construction of fire wall of suitable dimension ((as per the drawing to be furnished by the contractor and approved by the PED during detailed Engineering) adjacent to the proposed new Power Transformers right-hand side (when viewed from the 110KV Bushing side) and the Existing Power Transformer. All the above work also includes excavations, supply of all civil, steel and other materials and labours and experts for the work and disposal of un wanted materials from the site and its safe disposal to the separate designated site including obtaining of CEA approval.

Handling, erection, testing and commissioning of Complete set of N2 Fire protection system for 110/22-11KV, 25MVA Power Transformer including all accessories for the same and required civil works etc.

22KV,25kA, 1000A Current transformer(1 ph) with 120% extended current rating, Ratio: 1000-500-250-125/1-1-1-1A

Handling, erection, testing and commissioning of Complete set of IEC 61850 protocol SAS compatible 110/22-11KV Power Transformer bay protection panel (HV &LV Side) comprises of Instantaneous over current and earth fault p

Handling, erection, testing and commissioning of GI lattice Tower gantry for 110KV supply take-off arrangements at existing 110KV line bay in 110KV switchyard with vertical structures with base plates and GI H Beam structure for linking the Bus Gantry vertical structures with base plate both of suitable dimensions (to be matched with the existing same tower for existing Power Transformer and suitable for stringing twin Zebra conductor This also includes provision of foundations with foundation bolts for fixing the vertical structure with foundation bolts. This also includes supply of foundation bolts, all required civil, steel and other materials, transportations, charges and labours and experts

Handling, erection, testing and commissioning of the following items. Each of this item work also includes inter pole cabling, provision of 75x12mm/50x6mm GI flats for Earthing and allied fasteners and spring Washers, laying, terminations, testing, commissioning of power cables and multistrand copper control cables of various cores/sizes (supply of all suitable sizes luges and ferrules included) required between the control room building and the switchyard as per site conditions, RTU integration and other works as required for this work. A) Integration of newly erected Pr. T. and equipments with existing RTU including all accessories, testing and commissioning etc., b)Erection, testing and commissioning of Lighting panels and other allied fittings /equipments with allaccessories. c)Erection of Fire fighting equipments suitably with allied accessories complete.

Laying and termination of all required size of Power Cables PVC 1.1KV Grade (Aluminium) and all required size of Copper Control cable (PVC) 1.1KV Grade with all accessories like clamps, glands, lugs, straight joints etc.,

Construction of Earth pits as required for equipment, power transformer, structure earthing including earthing materials, earth wire, risers, auxiliary earth mat etc., and laying of main earth mat including all materials anjd accessories etc.,

CIVIL WORKS including construction of Fire Protection wall, Construction of new Power Transformer Plinth and equipment foundations, yard concreting, stone spreading in the yard and other allied civil works as per department specifications and Drawings including any dismantling of old structures / plinth involved (complete including Supply of all civil, steel materials, GI foundation bolts for each job included and includes all charges for crane, transport. labours and experts etc.,)

Handling, erection, testing and commissioning of Complete set of 145KV/31.5kA/ 1250 Amps, SF6 Circuit Breaker along with support structure (spring operated).

Handling, erection, testing and commissioning of Complete set of 145KV/31.5kA/ 1250 Amps HDB Motorised isolator, 3Ph with one earth switch.

rotection relay with high set, LBB, under voltage relay and allied all other required auxiliary protection relays (all IED based relays wherever required) and accessories and Smart Tri-vector meter Supply of required cables for inter panel wiring terminations included.

Handling, erection, testing and commissioning of 145 KV Solid core post isolators for the above Isolators.

Handling, erection, testing and commissioning of 145kv, 31.5KA, 1200A Current Transformer 1ph with 120% extended current rating ratio 1200-900-600-300/1-1-1-1A.

Handling, erection, testing and commissioning of 98KV Lighting arrestor 1ph class 3 (gapless) with surge counter and monitor.

Handling, erection, testing and commissioning of 145KV Solid core post insulator.

Handling, erection, testing and commissioning of Complete set of IEC 61850 protocol SAS control panel for 110/22-11KV Power Transformer bay Control Panel (HV & LV Side) comprises control unit, control switches for operation of bay equipment of respective bay, Multifunction transducer with 0.2s class accuracy and with RS 485 port, Digital panel meters for displaying voltage, current, frequency, Pf, MW, MVAr. Annunciation window. Supply of required cables for inter panel wiring terminations included.

Handling, erection, testing and commissioning of Complete set of 145KV/31.5kA/ 1250 AmpsHDB Motorised isolator, 3Ph with out earth switch.

Handling, erection, testing and commissioning of 22KV, 1000A, 25KA Current Transformer 1ph with 120% extended current rating ratio 1000-500-250-125/1-1-1-1A.

Handling, erection, testing and commissioning of 18KV Surge arrestor 1ph - Class 2

Handling, erection, testing and commissioning of 22KV Buspost Isolator

Dismantling of old transformer plinth and other dismantling works

All documentation charges like preparation and handling over of 3 sets of complete handing over reports includes specifications, test reports, drawings, manuals etc., documentation works for obtaining of CEA and other required clearances including remittances of fees etc.,

145 KV, 1250 Amps, 31.5kA HDB motorised Isolator, 3-ph with one earth switch.

Copper wound 25MVA, 110/22-11 KV, Dyn 11, 3 Ph, 50Hz, Power transformer with OLDC, RTCC & other accessories with 10% extra oil.

Handling, erection, testing and commissioning of Complete set of 22KV, 1250A, 25KA, HDB motorised isolator, 3ph without earth switch including isolators.

C&R Panels

Supply and erection of 110/22-11KV Transformer protection panel fitted with numerical relays (HV & LV side) with automation.

Supply and erection of control panel for 110/22-11KV Transformer bay (HV & LV side) with automation.

Complete set of 145KV/31.5kA/ 1250 AmpsHDB Motorised isolator, 3Ph with out earth switch.

Handling, erection, testing and commissioning of Complete set of 22KV, 1600A, 3pH, 25KA, VCB along with supporting structure (spring operated).

22KV, 1000A, 25KA Current Transformer 1ph with 120% extended current rating ratio 1000-500-250-125/1-1-1-1A.

18KV Surge arrestor 1ph - Class 2

Complete set of 22KV, 1250A, 25KA, HDB motorised isolator, 3ph without earth switch including isolators.

Erection hardware items as per standard technical specifications required for 110KV single main and aux bus schemes 110/22KV Transformer bay and modification of LV bus arrangements with Zebra twin conductor type bus system at 22KV bay as per drawing and from power transformer and Power tra

Existing RTU nad LDMS integration of the above transformer bays necessary hard wiring and other required accessories and materials etc.,

Earthing

Earth pits as required for equipmet, power transformer, structure earthing including earthing materials, earthwire, risers, auxillary earth mat ets., (excluding main earth mat).

nsformer LV bushing to 22KV LV breaker ( Zebra twin type) at 22kV bay including. Insulator strings, disc insulators, Hardware’s, spacers, Zebra conductors, Aluminum tube(s) bus bar materials, cable tray, bay marshalling box, clamps, connectors including equipments connectors, junction boxes, AC & DC Panels, buried cable trenches/PVC Pipe, equipments and lighting all accessories etc., (including materials for extension of Pr. Tr. LV to LV VCB & dual conductor type bus extension with zebra conductor in LV bus.) to complete the work.

Existing RTU nad LDMS integration of the above transformer bays necessary hard wiring and other required accessories and materials etc.,

Mandatory spares for 110/22KV 25MVA Pr.Tr. And equipments:

Buchholz relay complete with contacts

Local & Remote winding temperature indicator with contacts

Oil temperature indicator with contacts

Cooler fan with motor

Fuses(One set consists of complete replacement for one transformer)

Indicating Lamps(One set consists of complete replacement for 1 transformer)

Winding Temperature sensing element

Oil Temperature sensing element

Gas collecting bottle

Oil sample bottle

Pressure Relief Device

Oil Sample syringes - 50ml

Control & Relay Panel spares

IED/Relays 61850 compatible communicable Distance protection relay

IED/Relays 61850 compatible communicable Transformer Differential Protection relay

IED/Relays 61850 compatible communicable Bay controler-cum Protection relay

Multifunction transducer 0.2s class accuracy with RD 485 port

Aux. Relay

Fuses & MCBs ( All Type & Ratings) - 2 Each

Indicating Lamp (All colours) - 2 each

Insulators disc spares

Mandatory spares (As mentioned section project)

145KV Equipments

145 kV Solid core Post Insulator

Tripping coil

Closing coil

Breaker control switch (TNC Switch)

Spring charge limiting switch

Spring charge motor

22 kV 1600 A,25kA VCB (3 phase) along with support structure.

22 kV, 1250 A, 25kA, HDB motorised Isolator (3 phase) without earth switch

18KV LA Complete unit

Surge counter

22 kV Bus post insulator

Complete set of 22KV/25kA/ 1250 AmpsHDB Motorised isolator, 3Ph with out earth switch.

Erection, Testing and Commissioning of :- ( a) Copper wound 25MVA, 110/22-11KV, Dyn 11, 3 Ph, 50Hz Power Transformer with OLDC, RTCC panel, & other accessories with 10% extra oil, (b) Nitrogen Injection fire fighting system with complete accessories, (c) RTU integration of Power Transformer operation as per the requirements, (d) Laying, termination, testing and commissioning of power cables and multi-strand copper control cables of various cores/sizes required between the control room building and the switchyard as per site conditions and other works as required for this work. The work also includes the followings: (i) Modification of existing Power Transformer plinth (as per the drawing to be furnished by the contractor and approved by the PED during detailed Engineering) with embed rails for placing and removal of the Power Transformers on the plinth suitable for new Power Transformer (ii) Modification oil sump pit if required and providing metal grills on top of the oil pit. The pebbles of suitable size has to be spread over the metal grills for smooth/easy access to Power Transformer. (iii) Provision of (Supply & erection included) strom water draining system (The water should be drained out side the oil sum pit by suitable means). (iv) Provision of (Supply & erection included) separate Burnt oil storage tank at appropriate location for draining the burnt oil from the oil pit. Provision of suitable foundations for cooling system as per the requirements (v) Construction of fire wall of suitable dimension ((as per the drawing to be furnished by the contractor and approved by the PED during detailed Engineering) adjacent to the proposed new Power Transformers right-hand side (when viewed from the 110KV Bushing side) and the Existing Power Transformer. All the above work also includes excavations, supply of all civil, steel and other materials and labours and experts for the work and disposal of un wanted materials from the site and its safe disposal to the separate designated site including obtaining of CEA approval.

Handling, erection, testing and commissioning of Complete set of N2 Fire protection system for 110/22-11KV, 25MVA Power Transformer including all accessories for the same and with required civil works etc.

Handling, erection, testing and commissioning of Complete set of IEC 61850 protocol SAS compatible 110/22-11KV Power Transformer bay protection panel (HV &LV Side) comprises of Instantaneous over current and earth fault protection relay with high set, LBB, under voltage relay and allied all other required auxiliary protection relays (all IED based relays wherever required) and accessories and Smart Tri-vector meter Supply of required cables for inter panel wiring terminations included.

N2 Fire protection system for 110/22-11KV, 25MVA Power Transformer including all accessories for the same.

Handling, erection, testing and commissioning of Complete set of 145KV/31.5kA/ 1250 Amps, SF6 Circuit Breaker along with support structure (spring operated).

rotection relay with high set, LBB, under voltage relay and allied all other required auxiliary protection relays (all IED based relays wherever required) and accessories and Smart Tri-vector meter Supply of required cables for inter panel wiring terminations included.

Handling, erection, testing and commissioning of 145kv, 31.5KA, 1200A Current Transformer 1ph with 120% extended current rating ratio 1200-900-600-300/1-1-1-1A.

Handling, erection, testing and commissioning of 98KV Lighting arrestor 1ph class 3 (gapless) with surge counter and monitor.

Laying and termination of all required size of Power Cables PVC 1.1KV Grade (Aluminium) and all required size of Copper Control cable (PVC) 1.1KV Grade with all accessories like clamps, glands, lugs, straight joints etc.,

Handling, erection, testing and commissioning of Complete set of IEC 61850 protocol SAS control panel for 110/22-11KV Power Transformer bay Control Panel (HV & LV Side) comprises control unit, control switches for operation of bay equipment of respective bay, Multifunction transducer with 0.2s class accuracy and with RS 485 port, Digital panel meters for displaying voltage, current, frequency, Pf, MW, MVar. Annunciation window. Supply of required cables for inter panel wiring terminations included.

Construction of earth pits as required for equipment, power transformer, structure earthing including earthing materials, earth wire, risers, auxiliary earth mat etc., (excluding main earth mat).

All documentation charges like preparation and handling over of 3 sets of complete handing over reports includes specifications, test reports, drawings, manuals etc., documentation works for obtaining of CEA and other required clearances including remittances of fees etc.,