Special Repairs for Replacement of BER Transformer and Related HT UG Cable for Ring Main at NAD, Visakhapatnam

Amount

Supplying, Installing, Connecting, Commissioning and Testing of Transformer, Step Down, Outdoor Type, Floor or Platform Mounted complete with standard fittings, 11 KV / 433 V [at No load], AC, 3 Phase, 50 Hz, of 100 KVA capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to IS – 1180-2014, Level-3 with latest amendment including making good the existing Platform, refixing existing HT / LT Busbar and Cables etc. complete all as specified and as directed and comprising of the following Specification and Fittings: Continuous Rating : 100 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Supplying, Installing, Connecting, Commissioning and Testing of Transformer, Step Down, Outdoor Type, Floor or Platform Mounted complete with standard fittings, 11 KV / 433 V [at No load], AC, 3 Phase, 50 Hz, of 160 KVA capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming toIS – 1180-2014, Level-3 with latest amendment including making good the existing Platform, refixing existing HT / LT Busbar and Cables etc. complete all as specified and as directed and comprising of the following Specification and Fittings: Continuous Rating : 160 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Supplying, Installing, Connecting, Commissioning and Testing of Transformer, Step Down, Outdoor Type, Floor or Platform Mounted complete with standard fittings, 11 KV / 433 V [at No load], AC, 3 Phase, 50 Hz, of 200 KVA capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to IS – 1180-2014, Level-3 with latest amendment including making good the existing Platform, refixing existing HT / LT Busbar and Cables etc. complete all as specified and as directed and comprising of the following Specification and Fittings: Continuous Rating : 200 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Supplying, Installing, Connecting, Commissioning and Testing of Transformer, Step Down, Outdoor Type, Floor or Platform Mounted complete with standard fittings, 11 KV / 433 V [at No load], AC, 3 Phase, 50 Hz, of 250 KVA capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to IS – 1180-2014, Level-3 with latest amendment including making good the existing Platform, refixing existing HT / LT Busbar and Cables etc. complete all as specified and as directed and comprising of the following Specification and Fittings: Continuous Rating : 250 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Supplying, Installing, Connecting, Commissioning and Testing of Transformer, Step Down, Outdoor Type, Floor or Platform Mounted complete with standard fittings, 11 KV / 433 V [at No load], AC, 3 Phase, 50 Hz, of 315 KVA capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to IS – 1180-2014, Level-3 with latest amendment including making good the existing Platform, refixing existing HT / LT Busbar and Cables etc. complete all as specified and as directed and comprising of the following Specification and Fittings: Continuous Rating : 315 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Supplying, Installing, Connecting, Commissioning and Testing of Transformer, Step Down, Outdoor Type, Floor or Platform Mounted complete with standard fittings, 11 KV / 433 V [at No load], AC, 3 Phase, 50 Hz, of 400 KVA capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to IS – 1180-2014, Level-3 with latest amendment including making good the existing Platform, refixing existing HT / LT Busbar and Cables etc. complete all as specified and as directed and comprising of the following Specification and Fittings: Continuous Rating : 400 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Supplying, Installing, Connecting, Commissioning and Testing of Transformer, Step Down, Outdoor Type, Trolley Mounted complete with standard fittings and Trolley, 11 KV / 433 V [at No load], AC, 3 Phase, 50 Hz, of 500 KVA capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to IS – 1180-2014, Level-3 with latest amendment including making good the existing Platform, refixing existing HT / LT Busbar and Cables etc. complete all as specified and as directed and comprising of the following Specification and Fittings: Continuous Rating : 500 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Note for Serial Item No. 1 to 7: The Transformers shall also be provided with following Terminal Arrangement & Fittings and rate quoted against respective item is deemed to be included for the same: Terminal Arrangement: [a] HV & LV Side: Cable Box [b] Quad furcating cable box with five compression glands for PVC Cable and One additional neutral terminal shall be brought out separately for earthing purpose on LV Side. [c] First filling of new and unused Transformer Oil [IS – 335 Marked], filtered and tested up to 60KV dielectric strength at 2.5mm air gap between testing electrodes. Certification of dielectric strength shall be submitted by the Contractor after filling the oil. Transformer Oil shall be got tested by APEPDCL. [d] Apart from routine tests mentioned in these tender documents and relevant IS, pre-commissioning inspection of Transformer shall be carried out by Senior Electrical Inspector / Electrical Inspector.

Fittings: [a] Externally hand operated Off–Circuit Tap Switch with position indicator and locking device. [b] Conservator with Oil Gauge, filling hole with plug & drain hole with plug [c] Undercarriage with four plain rollers [d] Oil filling hole cum air release plug [e] Drain Valve cum Sampling Valve [f] Top Filter Valve with Plug [g] Rating Plate with Diagram Plate [h] Lifting lugs for Transformer [j] Lifting lugs for Core [k] Earthing Terminals [l] Thermometer Pockets [m] Silica Gel Breather [n] Explosion Vent [o] Double Float Buchholz with alarm and trip contacts including control cable of copper conductor of size & length from Marshalling Box to Relay of VCB [p] 150mm size Oil Temperature indicator, dial type with alarm and trip contacts [q] 150mm size Winding Temperature indicator, dial type with alarm and trip contacts [r] Buchholz Relay with 2 Shut-Off Valves [s] Marshalling Box with Double Window [t] OCTC

M & L for Cable End Termination box, Heat Shrinkable, Outdoor type suitable for 11 KV, 120 to 185 Sq.mm XLPE, 3 Core Power cable with aluminium conductor including dismantling old cable end termination of any description, opening the loop of the cable as required and earth work excavation, return filling etc. necessary complete all as directed.

Earthing complete with Galvanised Steel Earth Plate Electrode 600 X 600 X 6 mm thick buried directly in ground [earth pit not less than 2.25 m deep below ground level] with top edge of Plate not less than 1.50 m below normal ground level connected to 32 X 6mm GI Strip [Earth Lead] and GI pipe 50 mm, Medium Grade for earthing lead protection to the extent of maximum 7.5m, Earth Plate Electrode surrounded by 150mm thick packed layers of Charcoal and Common Salt filled in alternate layers, connected to the Plate by means of GI Bolts & Nuts complete all as per Electrical Plate No. 3 of SSR Part – I, connected to panel / DB including testing on completion including main earthing, Charcoal, Common Salt, PCC [1:2:4, Type B1] Pit with RCC 1:2:4, Type B1 Cover, 50 mm thick with 6 Nos, 8 mm dia TMT bars in both ways, MS frame made with 40 X 40 X 6 mm Angle Iron, MS Funnel with 20 mm bore, medium grade GI Watering pipe, wire mesh, earth work excavation, return filling, removal of surplus soil etc. and disconnecting and taking down existing Earthing of any description complete all as specified and as directed.

S & F in repairs Earth continuity Conductor or main earthing lead made of GI Strip of size 32 X 6mm, fixed to wall on batten or recess or chases or burried in ground or fixed to poles or any other indicated situation including drawing through GI Pipe for earthing etc. complete all as specified and as directed.

Taking down of existing BER Transformer of 100 KVA to 250 KVA of any type with Cable Box capacity from the foundation, disconnecting all electric connections from any location, transporting and depositing the Transformer to MES Store Yard including necessary T & P complete all as specified and directed.

Taking down of existing BER Transformer of 300 KVA to 500 KVA of any type with Cable Box capacity from the foundation, disconnecting all electric connections from any location, transporting and depositing the Transformer to MES Store Yard including necessary T & P complete all as specified and directed.

M/S JIWAN KUMAR MITTAL

JAI ENTERPRISES

M P TYAGI ENGINEERS AND CONTRACTORS

M/s GOPALA KRISHNA ENGINEERING INDUSTRIE.

UNIVERSAL ENTERPRISES

SUPREET CONSTRUCTIONS