NLC INDIA LIMITED (formerly Neyveli Lignite Corporation Limited) ('NAVARATNA'-Government of India Enterprise) MATERIALS MANAGEMENT COMPLEX

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1 NLC INDIA LIMITED (formerly Neyveli Lignite Corporation Limited) ('NAVARATNA'-Government of India Enterprise) MATERIALS MANAGEMENT COMPLEX Dr. Rajendra Prasad Road,Block-27,Neyveli Tamilnadu,India. Phone: Fax: / GST:33AAACN1121C1ZG CIN:L93090TN1956GOI /TENDER ENQUIRY NO :ENQ/17-18/003684/MM23(02) /DATE :01/01/2018 /Page - 1 Due Date of Cover-I Opening : 17/01/ :00:00 hrs. IST (Check NLC eproc website for any change in due date of opening.) Note : Quotation should be valid for 60 days from the date of opening. Gentlemen, We shall be glad to receive your lowest online offer submitted through for the material mentioned below, subject to our terms and conditions. Any other mode of offer will be rejected. Please indicate the enquiry number in all future correspondence. Offer details of the participating bidders will be available online after the tender is opened. 1 Details UOM Specification Sets Quantity : 3x25 KVAR, 440Volts Heavy duty harmonic grade energy saving Power factor improvement Capacitor Bank, mounted inside a weather proof Cubical Panel with zero amplification reactor and 200 A MCCB suitable for 240 KW Silp-ring Induction Motor. Technical Factor(s) 1 Scope: Supply, Connection, Testing and handing over of 4 Sets. of Super/Ultra Heavy duty, harmonic grade, energy saving power factor controller, 3-phase, self-healing shunt power capacitor units/banks of rating 3x25 KVAR along with necessary copper cables and other consumables, which are to be used in parallel to the existing 3-phase, 240 KW, 440 V slip-ring induction motors in SMEs of Mine-IA. The specific purpose of adding the capacitors is to save energy by improving the power factor of the current drawn by the motor. 2 Electrical Design: 1. The capacitor is to be of super/ultra heavy duty box type capacitor. 2. The dielectric shall be of AAP. 3. The capacitors shall be designed for 3-phase 440 V circuits at 50 Hz. 4. The total reactive power that is to be supplied by the capacitors will be of 75 KVAR capacity. 5. Three independent 3-phase capacitors each of 25 KVAR capacity may be banked together in parallel. 6. The capacitor may be designed in such a way that the improvement of power factor of the 240 KW slip ring induction motor from the present 0.4 to 0.9 i.e., a minimum of 0.5 improvement of power factor is required in the existing system so that the current drawn from the source will be less by minimum of 60 Amps. 7. The three capacitors may be banked in such a way as shown in the GA drawing enclosed. 8. The outgoing connecting cable from the capacitor bank after the 200 Amps MCCB to the motor starter outgoing terminals will be supplied by NLCI as per the requirements at site conditions. 9. However, connecting lugs and workmanship will be in supplier scope. 10. R-Y-B LED based small indication lamps and an analog hour meter (230 V) preferably Kayee/Quartz make shall be provided in the front side of the door through three nos of suitable HRC fuses for indicating whether the capacitor is in service or not and to measure the total running hours. Supply shall be tapped from the point after the MCCB. 11. A suitable cable gland shall be provided in the bottom of the panel for connecting 3 1/2 x 95 sq.mm. copper cable to the motor starter outgoing terminals. 12. The capacitors shall be of any one of the following makes - ABB, Epcos, L&T, Schneider and Mehar. Please furnish the details of the offered capacitor dimension and its catalouge for scrutiny. 3 Zero Amplification Reactor: A suitable Zero amplification reactor using 70 sq.mm. copper cores with minimum three numbers of full turns shall be added to the capacitor bank in series in all the three phases to avoid over voltages and over currents due to the amplification of the harmonics of the applied voltages. YOUR OFFER SHOULD BE ON DOOR DELIVERY BASIS AT NLC STORES NEYVELI /Inspection Clause : Inspection at Neyveli /Guarantee Requirement : General Guarantee for Warranty, Combined Bank Guarantee as per NLC format - Warranty Period: 12 months from the date of commissioning or 18 months from the date of receipt of material, whichever is earlier. 1)Terms and Conditions of Enquiry 2)75 KVAR CAPACITOR PANEL GA Drawing. Attachments : NABL ACCREDITED LAB FOR CHEMICAL AND MECHANICAL TESTING OF MATERIALS IS AVAILABLE AT NLC. INTERESTED SUPPLIERS MAY VIEW THE DETAILS INCLUDING TESTING CHARGES AVAILABLE AT NLC'S WEBSITE Page 1 of 5 This Document has been digitally signed. Registered Office: First Floor, No.08, Mayor Sathyamurthy Road, FSD,Egmore Complex of Food Corporation of India,Chetpet, Chennai

2 4 Losses: 1. The total losses of the capacitor bank shall be less than 2.5 Watts/KVAR. 2. Maximum permissible voltage and current: Maximum permissible voltage: 1.1 Vn. Maximum permissible current: 1.3 In. 3. Dielectric loss angle: The dielectric loss angle of the metallised polypropylene film with internal inductive coil and discharge resistor shall not exceed Insulation resistance of the capacitor terminals and the container: The insulation resistance of all the terminals and the container shall not be less than 50 Mohms for a D.C. voltage of 500 V. 5. All live parts such as terminals and bus-bars are to be shrouded with insulating sheets. 5 Mechanical Design: 1. The general arrangement of the capacitor panel shall be as shown in the attached drawing. 2. The panel has to be installed in the available space and hence the measurements shall comply with as per the drawing. 3. The capacitor banks and all other accessories may be kept in a sturdy weather proof metal-sheet enclosure suitable for out-door use. 4. This panel has to be kept near by the existing starter panels in outdoor conditions. Hence the top of the panel should have dripping surface to drain the rain water away. 5. The back door of the panel must be properly bolted and sealed so that the rain water entry is totally avoided. 6. The front door shall have three hinges with two panel locks, one padlock provision and one door handle. 7. All the electrical connections must be inside the enclosure and only the connecting cable should come out through a cable gland in the bottom side of the panel in such a way that rain water does not enter the enclosure. 8. The approximate enclosure size at the maximum may be of 450 mm length, 1300 mm height and 350 mm width as shown in the enclosed drawing. 9. Suitable provision for fixing the enclosure on the base of the starter and suitable base legs to make the panel stand erect and suitable holes for bolting the legs to the floor may also be provided in the panel enclosure. Four nos of lifting foldable handles may also be provided at both sides for easy handling and transportation. 10. Proper louvers may be provided in the enclosure for easy cooling of the capacitor banks. 11. Two nos of cable glands suitable for 3 1/2 x 95 sq.mm copper cable shall be supplied along with the panel - one fixed at the bottom of the panel as shown in the diagram and another for the connection at the motor starter panel. 12. One hinged grill door shall be provided to totally shroud the live parts immediately after the outer door. 6 Normal Service Conditions: 1. Residual Voltage at energisation should not exceed 10 % of 415 V. 2. The capacitor may be operated at an ambient temperature of 50oC. 3. The rated frequency is 50 Hz. 4. The capacitors will be connected to the existing starter outgoing terminals where the slip ring induction motor cables are connected. 5. The capacitors may be designed suitable for the maximum permissible voltages and currents as given in Clause 6 of IS 13340: The capacitors shall be designed for a life of 1,50,000 hours of continuous operation. 7 Safety Requirements: 1. Capacitors shall comply with the relevant general safety regulations for power installations i.e., CERA Rules. 2. Discharge Device: Each capacitor bank shall be provided with a directly connected discharge device. This discharge device shall reduce the residual voltage from the crest value to 50 V or less within 1 minute after the capacitor is disconnected from the source of supply. There must be no switch, fuse or any other isolating device between the capacitor unit and the discharge device. A discharge device is not a substitute for short-circuiting the capacitor terminals together and to earth before handling. 3. Earth Connection: The metal container and the overall enclosure of the capacitor shall be properly connected to the earth in a reliable way through a terminal clearly marked with a earth symbol. 4. Caution display: A warning instruction that Discharge the Capacitors before touching the terminals, should be prominently marked in red. 8 Protection for the capacitor unit: A three pole 200 Amp MCCB (make ABB/L&T/SEIMENS only) shall be included in the circuit before the capacitance as the incomer breaker. This is to ensure that the capacitor is isolated from the main circuit in the event of a fault of the capacitor bank without disturbing the main motor circuit. 9 Tests reports on capacitors to be supplied along with the supply: 1. Type Tests: The supplier shall submit type tests reports that were previously conducted in NABL accredited lab for a similar capacitor of 25 KVAR capacity. If not the supplier has to conduct all the type tests for one capacitor as prescribed in clause 12 of IS 13340:1993 in NABL accredited lab at the cost of the supplier and submit the test reports to NLCI. 3.Routine Tests: All the routine tests are to be conducted by the supplier for all the capacitors. 4. Three copies of the Type test and routine test reports are to be submitted to NLCI for approval before transportation. The units shall be transported to NLCI site only after the approval of the type, self-healing and routine tests certificates. 5. All the necessary pre-commissioning tests shall be conducted at NLCI site in the presence of NLCIs representative at the cost of the supplier.

3 10 Connection, Testing and handing over: 1. The supplier shall transport the capacitor banks and the connecting cable to NLCI site and connect the same at the starters motors panels in Belt I & II 240 KW motors of BWE 1440 & BWE 1447 at Mine-I as suggested by NLCI officials free of cost. 2. Minor modifications if required during installation have to be carried out by the supplier free of cost. 3. Necessary testing shall be conducted by the supplier in the presence of NLCI free of cost. 4. Logistics inside mines shall be arranged by NLCI. Delivery Schedule Delivery Type Period From PO Date (Days) Quantity Bulk supply 0 to Test Certificate Test certificates shall be furnished as per technical factor no.9 2 Specification : 2x25 KVAR, 440Volts Heavy duty harmonic grade energy saving Power factor improvement Capacitor Bank, mounted inside a weather proof Cubical Panel with zero amplification reactor and 160 A MCCB suitable for 110 KW Silp-ring Induction Motor. Sets Technical Factor(s) 1 Scope: Supply, Connection, Testing and handing over of Super/Ultra Heavy duty, harmonic grade, energy saving power factor controller panels, 3-phase, self-healing shunt power capacitor units/banks of rating 2x25 KVAR along with necessary copper cables and other consumables, which are to be used in parallel to the existing 3-phase, 110 KW, 440 V slip-ring induction motors Belt III 110 KW motors of BWE 1440 & BWE 1447 at Mine-I. The specific purpose of adding the capacitors is to save energy by improving the power factor of the current drawn by the motor. 2 Electrical Design: 1. The capacitor is to be of Super/Ultra heavy duty box type capacitor. 2. The dielectric shall be of "All Polypropylene". 3. The capacitors shall be designed for 3-phase 440 V circuits at 50 Hz. 4. The total reactive power to be supplied by the capacitors will be of 50 KVAR capacity. 5. Two independent 3-phase capacitors each of 25 KVAR capacity may be banked together in parallel. 6. The capacitors may be designed in such a way that the improvement of power factor of the 110 KW slip ring induction motor from the present 0.3 to 0.9 i.e., a minimum of 0.6 improvement of power factor is required in the existing system so that the current drawn from the source will be less by minimum of 50 Amps. 7. The two capacitors may be banked in such a way as shown in the GA drawing enclosed. 8. The outgoing connecting cable from the capacitor bank after the 160 Amps MCCB to the motor starter outgoing terminals will be supplied by NLCIL as per the requirements at site conditions. The supplier has to transport the cables to site. Only logistics inside Mines will be arranged by NLCIL. 9. However, connecting lugs and workmanship will be in supplier scope. 10. R-Y-B LED based small indication lamps and an analog hour meter (230 V) preferably Kayee or Quartz make shall be provided in the front side of the door (flush mounting) through three nos of suitable HRC fuses for indicating whether the capacitor is in service or not and to measure the total running hours. Supply shall be tapped from the point after the MCCB. 11. A suitable cable gland shall be provided at the bottom of the panel for connecting 3 1/2 x 70sq.mm. copper cable to the motor starter outgoing terminals and one more similar gland shall be supplied in loose per panel for connecting at the starter end. 12. Make of the capacitor offered shall be furnished. 13. Catalouge of the Capacitor offered shall be attached along with offer. 3 Zero Amplification Reactor: To avoid over voltages and in-rush currents, suitable Zero amplification reactor using 70 sq.mm. copper cores shall be added to the Capacitor bank in series in all the three phases. The reactor shall contain minimum three numbers of coils in each phase and the same shall be tied to a fixed flat.

4 4 Losses: 1. The total losses of the capacitor bank shall be less than 2.5 Watts/KVAR. 2. Maximum permissible voltage shall be 1.1 Vn and Maximum permissible current shall be 1.3 In. 3. The dielectric loss angle of the metallised polypropylene film with internal inductive coil and discharge resistor shall not exceed The insulation resistance of all the terminals and the container shall not be less than 50 Mohms for a D.C. voltage of 500 V. 5. All live parts such as terminals and bus-bars are to be shrouded with insulating sheets. 5 Mechanical Design: 1. The general arrangement of the Capacitor panel shall be as shown in the attached drawing. 2. The panel has to be installed in the available space and hence the measurements shall comply with the drawing. 3. The capacitor banks and all other accessories may be kept in a sturdy weather proof metal-sheet enclosure of MS sheet of thickness 3 mm which is suitable for out-door use. 4. This panel has to be kept near by the existing starter panels in outdoor conditions. Hence the top of the panel should have dripping surface to drain the rain water away. 5. The back door of the panel must be properly bolted and sealed so that the rain water entry is totally avoided. 6. The front door shall have three hinges with two panel locks, one padlock provision and one door handle. 7. All the electrical connections must be inside the enclosure and only the connecting cable should come out through a cable gland at the bottom side of the panel in such a way that rain water does not enter the enclosure. 8. The approximate enclosure size at the maximum may be of 450 mm length, 900 mm height and 350 mm width as shown in the enclosed drawing. 9. Suitable provision for fixing the enclosure on the base of the starter and suitable base legs to make the panel stand erect and suitable holes for bolting the legs to the floor may also be provided in the panel enclosure. Four nos of lifting handles may also be provided at both sides for easy handling and transportation. 10. Proper louvers may be provided in the enclosure for easy cooling of the capacitor banks. 11. Two nos of cable glands suitable for 3 1/2 x 70 sq.mm copper cable shall be supplied along with the panel - one fixed at the bottom of the panel as shown in the diagram and another for the connection at the motor starter panel. 12 A suitable hinged wire mesh shall be provided inside the front door to cover all the live parts when the door is opened. 6 Normal Service Conditions: 1. Residual Voltage at energisation should not exceed 10 % of 415 V. 2. The capacitor may be operated at an ambient temperature of 50 degree C. 3. The rated frequency is 50 Hz. 4. The capacitors will be connected to the existing starter outgoing terminals where the slip ring induction motor cables are connected. 5. The capacitors may be designed suitable for the maximum permissible voltages and currents as given in Clause 6 of IS 13340: The capacitors shall be designed for a life of 1,50,000 hours of continuous operation. 7 Safety Requirements: 1. Capacitors shall comply with the relevant general safety regulations for power installations i.e., CEAR Rules. 2. Discharge Device: Each capacitor bank shall be provided with a directly connected discharge device. This discharge device shall reduce the residual voltage from the crest value to 50 V or less within 1 minute after the capacitor is disconnected from the source of supply. There must be no switch, fuse or any other isolating device between the capacitor unit and the discharge device. A discharge device is not a substitute for short-circuiting the capacitor terminals together and to earth before handling. 3. Earth Connection: The metal container and the overall enclosure of the capacitor shall be properly connected to the earth in a reliable way through a terminal clearly marked with an earth symbol. 4. Caution display: A warning instruction that "Discharge the Capacitors before touching the terminals", should be prominently marked in "Red". 8 Protection for the Capacitor unit: A three pole 160 Amp MCCB (make ABB/L&T/SIEMENS only) shall be included in the circuit as an incomer breaker before the capacitor. This is to ensure that the capacitor is isolated from the main circuit in the event of a fault of the capacitor bank without disturbing the main motor circuit.

5 9 Test certificates of Capacitor banks to be supplied along with the supply: 1. Type Tests: The supplier shall submit Type test reports that were previously conducted in NABL accredited lab for a similar capacitor of 25 KVAR capacity. If not, the supplier has to conduct all the type tests for one capacitor as prescribed in clause 12 of IS 13340:1993 in NABL accredited lab at the cost of the supplier and submit the test reports to NLCIL for approval. 2. Routine Tests: All the routine tests are to be conducted by the supplier for all the capacitors and submitted at the time of supply. 4. Three copies of the Type test, routine test reports are to be submitted to NLC for approval before transportation. The units shall be transported to NLC site only after the approval of the type and routine tests certificates. 5. All the necessary pre-commissioning tests shall be conducted at NLC site in the presence of NLCs representative at the cost of the supplier. 10 Connection, Testing and handing over: 1. The supplier shall transport the capacitor banks panels to NLCIL Site and connect the same at the starters of Belt drive motors of BWE 1440 & BWE 1447 at Mine-I, as suggested by NLCIL officials free of cost. 2. Minor modifications if required during installation have to be carried out by the supplier free of cost. 3. Necessary testing shall be conducted by the supplier in the presence of NLCIL free of cost. 4. Logistics inside Mines shall be arranged by NLCIL. Delivery Schedule Delivery Type Period From PO Date (Days) Quantity Bulk supply 0 to Test Certificate Test certificates shall be furnished as per technical factor no.9. NLCIL RESERVES THE RIGHT TO CONDUCT REVERSE AUCTION ON ITEM WISE SITE COST BASIS AFTER PRICE BID OPENING SUBJECT TO ELIMINATION OF H1 BIDDER (HIGHEST QUOTE) IF THE QUALIFIED BIDDERS ARE MORE THAN FOUR.

Delivery Schedule. Specification. Delivery Schedule. Specification

Delivery Schedule. Specification. Delivery Schedule. Specification NLC INDIA LIMITED (formerly Neyveli Lignite Corporation Limited) ('NAVARATNA'-Government of India Enterprise) MATERIALS MANAGEMENT COMPLEX Dr. Rajendra Prasad Road,Block-27,Neyveli-607807.Tamilnadu,India.