REPAIR/REPLACEMENT OF DISTRIBUTION NETWORKING SYSTEM FOR RESTORATION OF ELECTRIC SUPPLY AT AF STATION UDHAMPUR

Amount

Dismantaling of old unservicable card,relays, contactor and MCCB and supply, installation, testing & commissioning with new featured PHASE LINE TO LINE and LINE TO NEUTRAL Integrated micro chip programable output Flux regulation card designed for high speed synchronous motor connected with RC network for servo stabilizer for load not less than 20 KVA and also not exceeding more than 300 KVA Capacity built with auto load detector for three phase built with integrated operational difference voltage amplifier LT operated for over voltage sensor circuit up to 300 volts & lower voltage sensor circuit starting from 120 volts with 01 volt sensitivity relay set unit consisting of Vaccume impregnated step down transformer standing primary voltage up to 500 volts with 1100 volts insulation & standing 1100 volts for 03sec Secondary with potential voltage 20 volts going to electromagnetic relay units and next to Micro switches unit of existing Motor for sharp regulation at 233Volts ( +/- ) 1% (Adj.) also featuring RC Filters arrangement for provision to rotate clockwise / Anti clock wise with current consumption less than 01 amps with timer restriction not to be activated more then 05 sec in one operation i.e. 433KV regulated including following features solid state electronic sensor design for exsisting 3 phase servo stabiliser Output impedance shall be 3.0 to 5.0 percent,The programmer shall be manufactured such that it will maintain electrical properties, even under severe overload, under/over voltage and under/over frequency conditions. Input correction range shall be -30% to +20% of nominal input voltage. The system design shall be capable of operating at an input frequency range of -15% to +10% of nominal, without clearing protective devices or causing component failure within the protection . Upon turn on or restart, the output of the existing Servo shall not exceed the specified output regulation limits. If the input voltage or frequency exceeds programmable minimum or maximum set points for a programmable time period (factory set for 10 seconds), the micro processor card shall electronically shut off command to the new installed MCCB as per load in Amps with minimum 25 KA repturing capacity with new shunt tripp coil as per site requirement with on delay not to exceed 2 sec . When electrical parameters are back within acceptable limits for a programmable time period (factory set for 60 seconds), the MCCB shall manualy restart to provide conditioned power to the load. If the input parameters are within acceptable limits, but the output voltage is outside of acceptable programmed limits, the output sensor card of any phase out of three phase shall electronically shut off and require a manual restart. The Micro Card shall be capable of operating at 100% rated load capacity continuously, 200% rated load for 10 seconds, 500% rated load for 1 second and 1000% rated load for 1 cycle. Operating efficiency shall be a minimum of 96%, typical at full load. Response Time: The protection unit shall respond to any line voltage variation in 1/2 cycle while operating linear or non-linear loads, with a load power factor of 0.60 of unity. Peak detection of the voltage sine wave shall not be permitted to avoid inaccurate tap switching due to input voltage distortion. Line Voltage Regulation and Correction Time: Output regulation shall be +5%, -6%, given an input voltage variation of -30% to +30% for nominal, when within +/-5% of the nominal frequency. The Micro card shall be equipped with both “Input Out of Range” , “Output Out of Range” indicators light shall be provided on the meter face to indicate that the input/Output voltage or frequency has exceeded acceptable limits. Metering: A digital input meter shall be provided to display line voltages, line currents, frequency, kVA, kW, and power factor. complete all as directed by Engr-in-charge. (Make:- L&T/ ABB/ SCHNEIDER / ISO 9001:2015 CERTFIED APPROVED COMPANY AS APPROVED BY GE. Note :- (i)The Entire work at shall be executed only by OEM .(ii)The work shall be executed at ATC,BASE OPS,CCR,MET,RT & HRDF.(iii)The contractor will submit work performance certificate from user.(iv)All equipment supplied by the contractor under this contract shall stand guaranteed for a period of 24 months from the date of certified date of completion of work issued by the GE. Any defect occurring during this period due to bad workmanship, material or manufacturing defect shall be rectified or replaced by the contractor free of cost.Contractor shall furnish written guarantee on own letter head for the above addressed to the Garrison Engineer immediately on complete of work.

Dismantling of old unserviceable unit up to 125 KVA Load & supply, installation, testing & commissioning of automation power restoration protection device 3 phase 4 wire complete including replacement of the switching air break contactor 02 Numbers 3 pole type of load handling capacity not less than 140 Amps ( LL) with 02 Numbers DC contactor 25 Amps operating voltage 12/ 24 volts DC also comprising automatic battery charger 12 volt/24 volt 15 amps with auto cut off at 13.2/ 27 volts including delivering uninterrupted 220 volts AC 100 watts Automation with restoration of electric supply within 30 seconds (i) If the mains fail, or one or more phase of mains is not available. If any phase voltage of mains is out of present limits however there should be a provision to set the limits of higher and lower phase voltages as per the site requirement. The mains supply with in this range shall be considered as healthy so as to avoid continuous running of Engine Alternator Set. Switch the load to the engine supply after suitable time delay, after starting the engine on mains failure/phase failure / low voltage / high voltage. Switch the load back to the mains supply after suitable time delay, when healthy mains supply is restored and stopping the Engine. Attempt to start the Engine up to three times on failure of earlier attempts with suitable time intervals. Two level fuel sensor for fuel should be provided at 50% & 25% respectively, with automatic temperature controller built with 01 numbers 6 inch cooling fans with proper installation at LT panel as directed by Engr-in-Charge. Provide following suitable features :- (a) Mains failure time - to initiate automatic EA start after 0 to 300 seconds of mains failure. (b) Mains restore time - to initiate automatic stop of EA after 0 to 300 seconds of mains in stable conditions. (c) Low oil pressure delay time - 0 to 99 seconds delay of the low pressure oil input alarm from engine start. (d) Stop solenoid time - 10 to 99 seconds enabling time for "stop solenoid". (e) Cranking up time - 0 to 99 seconds enabling time for starter. The timer is reset if the engine starts before the programmed time. (f) Start attempts - 1 to 3 numbers of automatic attempts during automatic start cycle (g) Attempts interval - 1 to 99 seconds time interval between starting pulse attempts. (h) Cooling down time - 0 to 300 seconds engine cooling time before stopping. During this time the engine runs without load. (i) Generator voltage time - time of stable generator voltage to close EA contactor to load (0 to 300 seconds). Multifunctional meter to indicate Voltage, Current, PF, Frequency & kWh of DG Set, including SAFETY CONTROL, Stop fault, Start fault 8. Engine Temperature high , Alternator fault, BTS battery low . Mains ok / mains faulty Overload . Over / under voltage Under /Over Frequency also including S/I/T/C of 02 Numbers one for input and second for output load 3 phase 4 wire 03 Current Transformers resin cast 15 VA burden 1100 volts insulation along with special Micro chip programmer Non conductive liquid level controller Sensor switch for diesel/oil with open collector output 08-28V DC,l ow-power, high-performance CMOS 8-bit microcontroller compatible with the industry- standard 80C51 instruction set and pin out. Fully Static Operation: 0 Hz to 33 MHz High / Low Level Sensor Switch suiatable for existing DG set of any capacity including existing LT/AMF panel designed specially for measuring the level of diesel and electrically non conductive liquids. proper mounting on any generator fuel tank. Apart from this, our offered diesel level Sensor is used in mobile tower management systems, which are being proved to track records at many locations.Electrical Supply Voltage +9 to +27VDC @150ma Resolution 0.5mm Accuracy 0.25% FSR Sample Rate 20Hz emperature Drift 100PPM °C Output 0-480 Ω / 0-2400 Ω ± 15 Ω / 4-20ma or digital with 0 and logic 01 or analoge variable voltage and current with differential sensors to measure against set threshold potential and to give output command having 2 NO/NC potential free contacts having special Dc coil operated SSR or DC contactor current/ voltage operated with load handling capacity not less than 25 Amps including short circuit protection going to AMF panel and next to Fuel cut off solenoid with programer delay timer set as per complete site requirements to tripp exsisting DG set on running mode by immidiately switch off to avoid dry run. Auto refrain protection by not according permission to start DG set if Non Conductive Diesel Level falls below 95% of total tank storage capacity. Modbus Analog 0-5VDC or 0- 30 ma reactive with Calibration Factory and optional field Mechanical Probe Length 50 – 2500mm. Mounting BSP Threads fitting / SAE 5-bolt pattern Probe Construction luminum Enclosure ABS Environmental Protection Class IP65/67 Operational Temperature -20°C to +85°C Compatible Medium Liquid Diesel , Oil with electrical parameters Limit the Inrush Current, Improve the THD/PF at Light Load or High Line, Improved Stability with a Type 2 Compensation Network--Phase Unbalance, Auto Phase Reversal tripping suitable for suitable load as per site requirement , Phase Missing Under Voltage and Over Voltage Monitor and Control, Neutral Open Protection. ALSO SPECIAL ZERO CROSSING SWITCHING OPERATION PROTECTION SYSTEM BUILT Phase Un balance (1 to 20%) (Adjustable) Power consumption 15VA / 3W Setting Accuracy voltage ± 4V, Minimum setting current 0.5A, Maximum setting current =5A (Above 5A - external CT setting max.1000/5 in steps of 5), Setting Accuracy Current ± 5% of full scale ±1digit, Trip time delay1 to 250secs settable for UB, OV, UV , UC & OC, Trip time accuracy± 1% of set delay ±2sec., Trip setting, Phase failure 3 sec Max. factory set., Phase Reversal Auto tripping, Phase Un balance1 to 20% (Adjustable), Under Voltage and over voltage 5V to 60V AC (Adjustable Individually ), Recovery Time2 sec Min Power On Delay10 sec Max., Service life(under no load) 10Lakh operations minimum , Electrical life, (under full load) 10 Lakh operations minimum.complete all as directed by Engr-in-charge.MAKE SIEMENS/SCHNEIDER/L&T / ISO 9001:2015 CERTFIED APPROVED COMPANY AS APPROVED BY GE. Note :- (i)The Entire work at shall be executed only by OEM .(ii)The work shall be executed at ATC Power house,(iii)The contractor will submit work performance certificate from user.(iv)All equipment supplied by the contractor under this contract shall stand guaranteed for a period of 24 months from the date of certified date of completion of work issued by the GE. Any defect occurring during this period due to bad workmanship, material or manufacturing defect shall be rectified or replaced by the contractor free of cost.Contractor shall furnish written guarantee on own letter head for the above addressed to the Garrison Engineer immediately on complete of work.

Dismentaling of old Mechanical on load changeover supply system 3 phase type and replacement of Phase failure and undervoltage monitoring of primary supply, Interlocked contactor switching, AUTO Changeover switching, Manual override of supplies, Supply available indication, Supply in use indication, Adjustable time delay between switching. with new on load auto interlock changeover system equipped with two switchgear contactors not less than 200 Amps three pole and following parameters Limit the Inrush Current, Improve the THD/PF at Light Load or High Line, Improved Stability with a Type 2 Compensation Network--Phase Unbalance, Auto Phase Reversal tripping suitable for 3 phase load of Potential Transformer , Phase Missing Under Voltage and Over Voltage Monitor and Control, Neutral Open Protection.ALSO SPECIAL ZERO CROSSING SWITCHING OPERATION PROTECTION SYSTEM BUILT WITH SCROLLING DIGITAL DISPLAY OF LINE PHASE VOLTAGES AND LINE CURRENT INCLUDING FREQUENCY AND POWER FACTOR Phase Un balance (1 to 20%) (Adjustable) Power consumption 15VA / 3W Setting Accuracy voltage ± 4V, Minimum setting current 0.5A, Maximum setting currrent =5A (Above 5A - external CT setting max.1000/5 in steps of 5), Setting Accuracy Current ± 5% of full scale ±1digit, Trip time delay1 to 250secs settable for UB, OV, UV , Trip time accuracy± 1% of set delay ±2sec., Trip setting, Phase failure 3 sec Max. factory set., Phase Reversal Auto tripping, Phase Un balance1 to 20% (Adjustable), Under Voltage and over voltage 5V to 60V AC (Adjustable Individually ), Recovery Time2 sec Min Power On Delay10 sec Max., Service life(under no load) 10Lakh operations minimum , Electrical life, (under full load) 10 Lakh operations minimum PROTECTION SYSTEM SHOULD BE PROVIDED WITH EACH FAULT DIGITAL ,Compensation of each phase, Measure power factor , total watts, total VAr, total KWH, Total KVArh, Programmable THD protection, Programmable Discharge Time ,complete all as directed by Engr-in-charge.MAKE SIEMENS/SCHNIDER/L&T / ISO 9001:2015 CERTFIED APPROVED COMPANY AS APPROVED BY GE. Note :- (i)The Entire work at shall be executed only by OEM .(ii)The work shall be executed at CCR/ATC Power house,(iii)The contractor will submit work performance certificate from user.(iv)All equipment supplied by the contractor under this contract shall stand guaranteed for a period of 24 months from the date of certified date of completion of work issued by the GE. Any defect occurring during this period due to bad workmanship, material or manufacturing defect shall be rectified or replaced by the contractor free of cost.Contractor shall furnish written guarantee on own letter head for the above addressed to the Garrison Engineer immediately on complete of work.

Dismentaling of Old Protection u/s relay & supply, installation, testing & commissioning Of Automatic voltage & Frequency display & Micro programmer protection device 3 phase ( 88 -264 ) Volts unit ( 45 Hz-- 55 Hz ) Adj Cut off ,Operating voltage etc as required with following features built in Surge voltage arrester consisting of base element with remote indicator contact and ground connectors, for mounting on NS 35/7.5, nominal voltage: 230 V AC, 3 + 1 circuit protection With floating remote indication contact Multi-channel type 2 arresters Optical, mechanical status indication for the individual arresters Type 2 consistent plug-in surge arresters Mechanical coding of all slots, Disconnect device on each individual plug , Ambient temperature (operation) -40 °C ... 80 °C Ambient temperature (storage/transport) -40 °C ... 80 °C Altitude ≤ 2000 m (amsl (above mean sea level)) Permissible humidity (operation) 5 % ... 95 % Shock (operation) 25g (Half-sine / 11 ms / 3x ±X, ±Y, ±Z) Vibration (operation) 5g (10 ... 500 Hz / 2.5 h / X, Y, Z) General IEC test classification II T2 EN type T2 IEC power supply system TN-S TT Mode of protection L-N L-PE N-PE Mounting type DIN rail: 35 mm Color jet black RAL 9005 Housing material PA 6.6 PBT Degree of pollution 2 Flammability rating according to UL 94 V-0 Type DIN rail module, two-section, divisible Number of positions 4 Surge protection fault message Optical, remote indicator contact Protective circuit Nominal voltage UN 240/415 V AC (TN-S) 240/415 V AC (TT) Nominal frequency fN 50 Hz (60 Hz) Maximum continuous operating voltage UC (L-N) 275 V AC Maximum continuous operating voltage UC (L-PE) 275 V AC Maximum continuous voltage UC (N-PE) 260 V AC Rated load current IL 80 A Residual current IPE ≤ 5 µA Standby power consumption PC ≤ 360 mVA Nominal discharge current In (8/20) µs 20 kA Maximum discharge current Imax (8/20) µs 40 kA current interrupt rating Ifi (N-PE) 100 A Short-circuit current rating ISCCR 25 kA Voltage protection level Up (L-N) ≤ 1.35 kV data Protective circuit Voltage protection level Up (L-PE) ≤ 1.6 kV Voltage protection level Up (N-PE) ≤ 1.5 kV Residual voltage Ures (L-N) ≤ 1.35 kV (at In) ≤ 1.1 kV (at 10 kA) ≤ 1 kV (at 5 kA) ≤ 0.9 kV (at 3 kA) Residual voltage Ures (L-PE) ≤ 1.6 kV (at In) ≤ 1.2 kV (at 10 kA) ≤ 1 kV (at 5 kA) ≤ 0.9 kV (at 3 kA) Residual voltage Ures (N-PE) ≤ 0.4 kV (at In) ≤ 0.25 kV (at 10 kA) ≤ 0.15 kV (at 5 kA) ≤ 0.1 kV (at 3 kA) TOV behavior at UT (L-N) 335 V AC (5 s / withstand mode) 440 V AC (120 min / safe failure mode) TOV behavior at UT (N-PE) 1200 V AC (200 ms / withstand mode) Response time tA (L-N) ≤ 25 ns Response time tA (L-PE) ≤ 100 ns Response time tA (N-PE) ≤ 100 ns Max. backup fuse with V-type through wiring 80 A (gG) Max. backup fuse with branch wiring 125 A (gG) Indicator/remote signaling Switching function PDT contact Operating voltage 5 V AC ... 250 V AC 30 V DC Operating current 5 mA AC ... 750 mA AC 1 A DC Connection method Plug-in/screw connection via COMBICON Screw thread M2 Tightening torque 0.25 Nm Stripping length 7 mm Conductor cross section flexible 0.14 mm² ... 1.5 mm² Conductor cross section solid 0.14 mm² ... 1.5 mm² Conductor cross section AWG 28 ... 16 Connection data Connection method Screw connection along with Phase under/over voltage, (AND & OR mode) , Positive sequence under voltage, Negative sequence overvoltage, Residual over voltage / Derived Vo sequence overvoltage, Voltage transformer supervision, Under/over frequency, Rate of change of Frequency (df/dt+t) ,complete all as directed by Engr-in-charge. .MAKE SIEMENS/SCHNEIDER/L&T / ISO 9001:2015 CERTFIED APPROVED COMPANY AS APPROVED BY GE. Note :- (i)The Entire work at shall be executed only by OEM .(ii)The work shall be executed at ATC,BASE OPS,CCR,MET,RT & HRDF,(iii)The contractor will submit work performance certificate from user.(iv)All equipment supplied by the contractor under this contract shall stand guaranteed for a period of 24 months from the date of certified date of completion of work issued by the GE. Any defect occurring during this period due to bad workmanship, material or manufacturing defect shall be rectified or replaced by the contractor free of cost.Contractor shall furnish written guarantee on own letter head for the above addressed to the Garrison Engineer immediately on complete of work.

Earthing complete with copper earth plate electrode of size 60cm x 60cm x 3.15 mm buried directly in ground vertically at a depth not less than 4.50 metre below normal ground level with top edge of earth plate at a depth not less than 3.5 metre below normal ground level surrounded from all sides by 15 cm thick and packed alternate layer of common salt and charcoal and a top layer of copper sulphate 150mm thick all as specified and as directed in drawing No CEAF/SK-60/2017 Dt 24.4.17 including bringing of mother soil from outside for filling holes, including Copper strip of size 20 x 3mm by means of nuts, bolts and check nuts, washers of copper up to main board/test point or as required including necessary excavation and earth work in any type of soil so as to achieve earth resistance below 3 Ohms including excavation of polypit chamber with polyplastic pit cover (cost of polypit chamber with polyplastic pit cover shall be deemed to be included in the rate quoted) complete all as specified and as directed by Engineer-in-Charge including dismantling of existing unserviceable earthing. Notes : (a) Copper strip beyond test point shall be measured and paid for separately. (b) Earthing resistance result shall be less than 3 Ω .If the result comes more than 3 Ω the contractor shall carry out the earthing at separate location/site given by the Engr-in-Charge after taking out of earth electrode without any extra cost to the deptt. (c) Test point terminal block shall be measured and paid for separately. (d) The contractor's quoted rates shall be deemed to include for dismantling/taking down of old unserviceable earthing of any type and making good the disturbed surfaces and nothing extra shall be admissible on this account. (e) Any other fittings/fixtures if technically required for achieving desired results (if not included above) shall be provided by the contractor without any extra cost to the Govt. (f) If mother soil is not available then mother soil wil be provided by contractor from outside source without any extra cost to the Govt.

Earthing complete with GI earth plate electrode of size 60cm X 60cm X 6mm buried directly in ground vertically at a depth not less than 2.25 metre below normal ground level with top edge of earth plate at a depth not less than 1.5 metre below normal ground level surrounded from all sides by 15 cm thick and packed layer of charcoal dust and common salt filling in alternate layers etc and connected to and including GI strip of size 32x6mm up to 7.5 mtr by means of bolts, nuts, check nuts and washers made of brass and protected by light grade 40mm dia upto 7.5 mtr long GI pipe connected to main control board and GI pipe light grade 20mm bore for watering and including funnel, wire mesh, RCC pit cover 50mm thick and PCC chamber pit with PCC 1:2:4 type C2 (including excavation and earth work disposal of surplus soil to a distance not exceeding 50 metre) and testing after completion all as specified and shown on plate No 3 of SSR Part-I 2009. and connecting to earth test point including taking down old unserviceable complete all as specified & directed by Engr-in-charge

Earth continuity conductor or main earthing lead 32 x 6 mm GI strip fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required, in repairs,complete all as specified & directed by Engr-in-charge.

Earth continuity conductor or main earthing lead 20x3 mm Copper strip fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required, in repairs,complete all as specified & directed by Engr-in-charge.

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