(DESCO) DRAFT TENDER DOCUMENT FOR

Transcription

1 Dhaka Electric Supply Company Limited (DESCO) DRAFT TENDER DOCUMENT FOR VOLUME - II (Part- 2) Tender Notice No: DESCO/CS/ PSEEIIP/Package-2/2014/

2 Section VI. Schedule of Supply 6-1 Section VI. Schedule of Supply

3 6-2 Section VI. Schedule of Supply Lot No. : Lot-1 of Package-2 Supply of 33KV 1-Core, 500 mm 2, 11KV 3-Core 300 mm 2 and 3-Core 185 mm 2 XLPE Underground Copper Cable with Cable Accessories

4 Section VI. Schedule of Supply 6-3 Contents 1.List of Goods and Related Services Delivery and Completion Schedule Technical Specifications Guaranteed Technical Data Schedule Drawings

5 6-4 Section VI. Schedule of Supply 1. List of Goods and Related Services Lot-1 of Package-2 Lot Name: Supply and Delivery of 33KV 1-Core, 500 mm 2, 11KV 3-Core 300 mm 2 and 3-Core 185 mm 2 XLPE Underground Copper Cable with Cable Accessories Item Name of Goods or Description Unit of Quantity No. Related Services Measurement 01 Supply & Delivery of: 33KV 1-Core, XLPE, 500 sq. mm U/G 210,000 Metres Copper Cables 02 Supply & Delivery of: Straight Through Joints for 33KV, 500 Nos. XLPE, 500 sq.mm U/G Copper Cables 03 Termination Kits for 33KV,1-Core, XLPE, 500 sq. mm U/G Copper Cables 3.1 Supply & Delivery of: Indoor 170 Sets 3.2 Supply & Delivery of: Outdoor 170 Sets 04 Supply & Delivery of: 11KV XLPE, 3-Core, 300 sq. mm U/G Copper Cables 05 Supply & Delivery of: Straight Through Jointing Box For 11KV, XLPE, 3-Core, 300 sq.mm U/G Copper Cables 06 Termination Kits for 11KV, XLPE, 3- Core, 300 sq. mm U/G Copper Cables 200,000 Metres. 450 Nos. 6.1 Supply & Delivery of: Indoor 200 Sets. 6.2 Supply & Delivery of: Out door 150 Sets. 07 Supply & Delivery of: 11KV, XLPE, 3-Core, 185 sq.mm U/G Copper Cables 100,000 Metres. 08 Supply & Delivery of: Straight Through Jointing Box For 250 Sets. 11KV, XLPE, 3-Core, 185 sq.mm U/G Copper Cables 09 Termination Kits for 3-Core, XLPE, 185 sq. mm U/G Copper Cables 9.1 Supply & Delivery of: Indoor 100 Sets. 9.2 Supply & Delivery of: Outdoor 100 Sets. Note: (1) Each set of Termination Kit shall comprise 3 (three) nos. of kits. (2) Each set of Outdoor Termination Kit shall also comprise 3 nos. of 33KV Spacer Insulator for 3 (three) phases and a galvanized mounting clamp.

6 Section VI. Schedule of Supply Delivery and Completion Schedule The delivery period shall start as of 21 days after the issuance of commitment letter (CL) on Letter of Credit from Asian Development Bank (ADB). The delivery shall be completed within 270 (two hundred and seventy) days counting from 21 days after issuance of CL in the DESCOs store at Mirpur, Dhaka, Bangladesh. If the bidder s guaranteed delivery time is longer than the delivery period specified in this Schedule, the bid shall be evaluated in the manner and to extent specified in Section-III, Evaluation and Qualification criteria. Item No. Description of Goods or Related Service Qty KV, XLPE, 1Cx500 sq. mm U/G Copper Cables 210,000 Metres. 02 Straight Through Jointing Box for 33KV, XLPE, 1Cx500 sq.mm U/G Copper 500 Nos. Cable 03 Termination Kits for 33KV, XLPE, 1Cx500 sq. mm U/G Copper Cables 3.1 Indoor 170 Sets. 3.2 Outdoor 170 Sets KV XLPE, 3-Core, 300 sq. mm U/G Copper Cables 05 Straight Through Jointing Box For 11KV, XLPE, 3- Core, 300 sq.mm U/G Copper Cables 06 Termination Kits for 11KV, XLPE, 3-Core, 300 sq. mm U/G Copper Cables 200,000 Meters 450 Sets. Delivery Period 270 days counting from 21 days after issuance of CL. Location Port of Entry for Goods offered from outside the Purchaser s Country and Ex-Works for Goods offered from within the Purchaser s country. Required Arrival Date of Goods or Completion Date for Related Services

7 6-6 Section VI. Schedule of Supply Item No. Description of Goods or Related Service Qty. 6.1 Indoor 200 Sets. 6.2 Out door 150 Sets KV, XLPE, 3-Core, 185 sq.mm U/G Copper Cables 08 Straight Through Jointing Box For 11KV, XLPE, 3- Core, 185 sq.mm U/G Copper Cable 100,000 Meters 250 Sets. 09 Termination Kits for 3- Core, XLPE, 185 sq. mm U/G Copper Cables 9.1 Indoor 100 Sets. 9.2 Outdoor 100 Sets. Delivery Period 270 days counting from 21 days after issuance of CL. Location Port of Entry for Goods offered from outside the Purchaser s Country and Ex-Works for Goods offered from within the Purchaser s country. Required Arrival Date of Goods or Completion Date for Related Services Note: (1) Each set of Termination Kit shall comprise 3 (three) nos. of kits. (3) Each set of Outdoor Termination Kit shall also comprise 3 nos. of 33KV Spacer Insulator for 3 (three) phases and a galvanized mounting clamp. Seal and Signature of the Bidder:..

8 Section VI. Schedule of Supply Technical Specifications Table of Contents Clause No. Description of Items Page No. 3.1 General References Climatic Condition Technical Specification of 33KV, XLPE, 1CX500 sq.mm, U/G Copper Cable General Technical Requirement Conductors Conductor Screening Insulation Insulation Thickness Insulation Screening Over sheath Armour Manufacturers Identification Continuous Current rating Short Circuit rating General requirement of 33KV, XLPE, 1Cx500 sq.mm, U/G 6-12 Copper Cable Indoor Termination kits for 33KV XLPE, 1Cx500 sq.mm, 6-12 U/G Copper cable Outdoor Termination kits for 33KV XLPE, 1Cx500 sq.mm 6-12 U/G Copper cable Straight through joints for 33KV XLPE, 1Cx500 sq.mm U/G Copper cable Technical Specification of 11KV, XLPE, 3CX300 sq.mm, U/G Copper Cable General Technical Requirement Conductors Conductor Screening Insulation Insulation Thickness Insulation Screening Over sheath Armour Manufacturers Identification Continuous Current rating Short Circuit rating General requirement of 11KV, XLPE, 1Cx500 sq.mm, U/G 6-16 Copper Cable Indoor Termination kits for 11KV XLPE, 1Cx500 sq.mm 6-17 U/G Copper cable Outdoor Termination kits for 11KV XLPE, 1Cx500 sq.mm 6-17 U/G Copper cable Straight through joints for 33KV XLPE, 1Cx500 sq.mm U/G Copper cable Technical Specification of 11KV, XLPE, 3CX185 sq.mm, U/G Copper Cable General Technical Requirement Conductors Conductor Screening 6-18

9 6-8 Section VI. Schedule of Supply Insulation Insulation Thickness Insulation Screening Over sheath Armour Manufacturers Identification Continuous Current rating Short Circuit rating General requirement of 33KV, XLPE, 1Cx500 sq.mm, U/G 6-20 Copper Cable Indoor Termination kits for 33KV XLPE, 1Cx500 sq.mm 6-20 U/G Copper cable Outdoor Termination kits for 33KV XLPE, 1Cx500 sq.mm 6-21 U/G Copper cable Straight through joints for 33KV XLPE, 1Cx500 sq.mm U/G Copper cable Other Specific Requirements: 4.1 Documentation Approval of Drawings Packing Inspection and Testing Costs related to inspection and testing Post landing Inspection Guaranteed Technical Data Schedule for KV, XLPE, 1Cx500 sq.mm, U/G Copper Cable Jointing Kits of 33KV, XLPE, 1Cx500 sq.mm, U/G Copper 6-28 Cable KV, XLPE, 3Cx300 sq.mm, U/G Copper Cable Jointing Kits 11KV, XLPE, 3Cx300 sq.mm, U/G Copper 6-32 Cable KV, XLPE, 3Cx185 sq.mm, U/G Copper Cable Jointing Kits 11KV, XLPE, 3Cx185 sq.mm, U/G Copper Cable 6-36

10 Section VI. Schedule of Supply General Where a Manufacturer s Standard or a national Standard equal to or better than the appropriate specified standard has been issued and is acceptable to the Purchaser, any material or goods supplied shall be manufactured, installed and tested in accordance with the latest revision of the relevant standard unless otherwise specified. Where any Standard referred to in this Specification has been superseded by a new standard prior to the date of the letter or invitation to bid, the reference shall be deemed to be to such superseding standard. Deviations from this Specification or standards referred to above shall be given in the bid and shall be accepted by the Purchaser before contract placement. The works shall be designed to ensure continuity of service under all working condition at the site as the first consideration and to facilitate inspection, maintenance and repairs. All electrical components shall be adequately rated for their most onerous duty and the specified ambient temperature. All goods supplied shall be designed and be of such quality as to require the minimum of maintenance during service. No welding, plugging or filling of defective parts shall be carried out without the prior sanction in writing of the Purchaser. Corresponding parts of similar goods/material, and goods/material liable to renewal, shall be fully interchangeable 3.2 References The recommendations and tests specified in the standards shall be adhered to. Equivalent standards established or approved in the country of manufacture may be used subject to the Purchasers approval. It shall be the responsibility of the Contractor to demonstrate to the Purchaser that any proposed National Standard is equal to or superior to the equivalent IEC or BS. All costs for this demonstration are deemed included in the Contractors Bid Prices. 3.3 Climatic Condition The offered goods shall be suitable for working in the climate conditions of Bangladesh as described below: Altitude : meters above the sea level Maximum ambient temperature : 45 C Minimum ambient temperature : 5 C Humidity : 98% Mean annual rainfall : mm No. of annual rainy days : days Average isokeraunic level : 80 days/year Pollution of ambient air : dust, salt, chemical.

11 6-10 Section VI. Schedule of Supply 3.4. Technical Specification of 33KV, 1CX500 sq.mm, XLPE, U/G Copper Cable and Cable Accessories General Technical requirement Cross Link Polyethylene Cable (XLPE) cables shall be suitable for operation at voltage of 33KV between phases at continuous maximum conductor temperatures of 90 deg. C. the cable shall be suitable in all respect for use on an 33KV system with a nominal three phase fault level of 31.5KA. The cables and associated fittings, joints and termination shall be so designed to prevent damage to the cable or fittings, except in the immediate vicinity of the fault, in the event of an installation failure at any point which results in a fault current to earth of 25KV for 1 sec. Single core, Copper Conductor, XLPE Insulated Copper screened 500 mm 2 under Power Cable shall comply with IEC , except as modified or extended by the requirement of the specification. The length of cable on a drum shall be 500M and it shall be shipped on standard non-returnable steel drum, each drum having stencilled on its side; size, type and length of cable, together with its gross weight, net weight and contract number Conductors All conductors shall be stranded, circular and compacted and comply with IEC Copper conductor cables shall be constructed with core of size 1CX500 mm Conductor Screening The conductor shall be screened with an extruded layer of semi-conducting compound, compatible in all respects with the conductor and insulation materials. Conductor screen shall be bounded to the insulation such that no voids or discontinuities are present. The bound shall be adequate to withstand the normal electrical and mechanical stresses in service without degradation or separation. Lapped semi-conducting tape not to be used for conductor screens Insulation The insulation shall consist of cross-linked polyethylene tightly extruded over the conductor screen. The insulation shall generally comply with IEC , except that insulation resistance measurements shall be made on the screened core without immersion in water. The highest possible purity of insulation material is required. The bidder shall demonstrate that adequate precautions are taken to remove contaminants and to eliminate the introduction of particles of contaminants during material handling or extrusion process. The Cable shall be manufactured through VCV. The insulation material shall be cross-linked by a dry process. A cross-linking process using steam curing will not be permitted Insulation Thickness The thickness of insulation shall be determined by taking the average of number of measurements and shall be not less than the values tabulated in IEC Publication

12 Section VI. Schedule of Supply 6-11 Insulation thickness shall not depart from the specified nominal value by an amount exceeding the tolerances specified in IEC Publication The thickness at any point, however, is less than the specified value, provided the difference does not exceed 10 percent plus 0.1mm. The thickness of the semi conducting screens on the conductors and over the insulation shall not be included in the measurement of insulation thickness Insulation Screening The insulation screen shall comprise a non-metallic semi-conducting polyethylene part combination with a metallic part. The non-metallic semi-conducting part shall be applied directly upon insulation of each core and shall be comprise a layer of extruded semi-conducting polyethylene compound. The conductor screen, Insulation and semi-conducting part of insulation screen layer shall be applied to the conductor in common extrusion process with dry curing system. The metallic part shall be stranded copper applied over the layer of semi conducting compound. On single core cable, it shall be comprised of single layer of copper wires adequately spaced a part. The non-metallic part shall be applied directly upon the insulation and shall be a layer of extruded semi-conducting compound. This screen shall be formed in such a way that it is readily removed for jointing. The insulation screen shall be capable of carrying an earth fault current of 25KA for 1 sec. without damage Over sheath The cable shall be sheathed overall with a MDPE outer sheath. The outer sheath shall be of smooth and uniform composition and free of holes, crakes, and bisectors and in perfection. As a protection against termite attack, the outer covering shall contain the termite repellent substance of Pb napthanate. The outer sheath shall be adequate strength and thickness to withstand the test voltage and mechanical tests, and shall be suitable for ambient conditions at site. The outer sheath material shall be capable of withstanding without damage or deformation the highest temperature achieved with the cable at its rated current and the site ambient conditions. The outer surface of the polyethylene outer sheath shall be specified in IEC Armour The armour shall consist of a single layer of non-magnetic wires in accordance with IEC

13 6-12 Section VI. Schedule of Supply The non-magnetic joints are brazed or welded and any wire shall be not less than 1mm from the nearest joints in any other armour wire in the complete cable Manufacturer Identification The manufacturer identification shall be printed with black colour on the identifying tape. It shall show the rated voltage, conductor size, the year in which the cable was manufactured, and name of manufacturer at an interval of not more than 1000 mm throughout the length of the cable. The designated voltage and cable marking shall also be embossed on the outer polyethylene covering. The gap between the end of one set of embossed characters and the beginning of the next shall be not greater than 150 mm throughout the length of the cable with character approximately 10 mm high. Name of the purchaser Dhaka Electric Supply Company Limited (DESCO) shall be embossed at ever 1000 mm gap Continuous Current Rating The continuous current rating of the cable shall be calculated in accordance with the procedure described in IEC 287 based on the site ambient condition including solar radiation, with the insulation parameters as specified. The bidder shall base his ratings on the site ambient conditions, with the methods of installation and bonding as specified, due account shall be taken of the heating due to other cables or other sources of heat where these can be identified. The maximum conductor temperature shall not exceed 90 deg. C when carrying the rated current under the most onerous site conditions Short Circuit Rating The cable shall be capable of withstanding without damage or permanent distortion the specified maximum short circuit current for the specified times. The temperature of the conductors during the passes of the specified maximum fault current for the specified time shall not exceed 250 deg. C. The cable design, including the design of external clamps or other restraining devices shall be adequate to contain the mechanical forces arising from two or three phase short circuit currents and longitudinal forces whether arising from magnetic effects or from thermal expansion of conductors General Requirement of 33KV XLPE, 1-Core, 500 mm 2 U/G Copper cable Item Description of Items Unit Particulars No. 1 Nominal System Voltage KV 33 2 Rated Voltage (IEC 183) KV 18/30 3 Cross sectional Area of mm Conductors 4 Insulation thickness mm Average thickness shall not be less than 8.0 nominal value as per IEC 502. However, thickness at any

14 Section VI. Schedule of Supply 6-13 point may be less than nominal value provided that the difference does not exceed 0.1mm + 10% of nominal value. 5 Manufacturing process Manufactured through VCV. 6 Conductor Material Copper 7 Shape of Conductor Compact Circular 8 Type of Conductor Screen Semi-conducting XLPE 9 Conductor Temperature at end of short Circuit C Indoor Termination Kits for 33KV XLPE, 1-Core, 500 mm 2 U/G Copper cable Item Description of Particulars No. Items I Application For 33KV, XLPE, 1Cx500 mm 2 Copper Conductors Ii Insulation For Indoor switchgear terminations Iii System 33KV, effectively earthed system Iv Cable conductor 500 mm 2 Copper Conductors V Kit content - Heat shrinkable high voltage insulating and non-tracking tubing - Heat shrinkable stress control tubing - Stress relieving mastic strip - Truck resistant sealant tape - Cable preparation kit - Solder less earth connection kit - Compression lugs for 500 mm 2 Copper Conductors - Misc. other material - Installation instructions Outdoor Termination Kits for 33KV XLPE, 1-Core, 500 mm 2 U/G Copper cable Item Description of Particulars No. Items I Application For 33KV, XLPE, 1Cx500 mm 2 Copper Conductors Ii Insulation For Outdoor installation on poles/structures Iii System 33KV, effectively earthed system Iv Cable conductor 500 mm 2 Copper Conductors V Kit content - Heat shrinkable high voltage insulating and non-tracking tubing - Heat shrinkable stress control tubing - Stress relieving mastic strip - Truck resistant sealant tape - Heat shrinkable truck resistant rain skirt - Support insulator - Cable preparation kit - Solder less earth connection kit - Compression lugs for 500 mm 2 Copper Conductors - Support insulators Tee Brackets - Misc. other material - Installation instructions Straight-through joint box for 33KV XLPE, 1-Core, 500 mm 2 U/G Copper cable Item Description of Particulars No. Items I Application For 33KV, XLPE, 1Cx500 mm 2 Copper Conductors

15 6-14 Section VI. Schedule of Supply Ii Insulation For underground horizontal mounting Iii System 33KV, effectively earthed system Iv Cable conductor 500 mm 2 Copper Conductors V Construction The joint shall be proof against ingress of moisture and water Vi Kit content - Compression ferrules - Valid filling tape - Heat shrinkable stress control tubing - Truck resistant sealant tape - Heat shrinkable high voltage insulating tape - Heat shrinkable black/red dual wall - Estomeric tube - Roll spring - Heat shrinkable outer jacket tube - Cable preparation kit - Solder less earth connection kit - Misc. other material - Installation instructions Technical Specification of 11KV, XLPE, 3CX300 sq.mm, U/G Copper Cable and Jointing Accessories General Technical Requirements: Cross Link Polyethylene U/G Cable (XLPE) cables shall be suitable for operation at voltage of 11KV between phases at continuous maximum conductor temperatures of 90 C. the cable shall be suitable in all respect for use on an 11KV system with a nominal three phase fault level of 25KA. The cables and associated fittings, joints and termination shall be so designed to prevent damage to the cable or fittings, except in the immediate vicinity of the fault, in the event of an installation failure at any point which results in a fault current to earth of 10KA for 1 sec. The length of cable on a drum shall be 500M and it shall be shipped on standard nonreturnable steel drum, each drum having stencilled on its side; size, type and length of cable, together with its gross weight, net weight and contract number Conductors Copper conductors shall be stranded, circular and compacted and comply with IEC Cables shall be constructed with three cores of sizes 300 mm 2 conductor Conductor Screening The conductor shall be screened with an extruded layer of semi-conducting material of 0.5mm thickness for both the cables.

16 Section VI. Schedule of Supply Insulation The insulation shall consist of cross-linked polyethylene tightly extruded over the conductor screen. The insulation shall generally comply with IEC 502, except that insulation resistance measurements shall be made on the screened core without immersion in water. The highest possible purity of insulation material is required. The bidder shall demonstrate that adequate precautions are taken to remove contaminants and to eliminate the introduction of particles of contaminants during material handling or extrusion process. The Cable shall be manufactured through VCV/CCV. The insulation material shall be cross-linked by a dry process. A cross-linking process using steam curing will not be permitted Insulation Thickness The thickness of insulation shall be determined by taking the average of number of measurements and shall be not less than the values tabulated in IEC Insulation thickness shall not depart from the specified nominal value by an amount exceeding the tolerances specified in IEC The thickness at any point, if less than the specified value, provided the difference does not exceed 10 percent plus 0.1mm, may be acceptable. The thickness of the semi conducting screens on the conductors and over the insulation shall not be included in the measurement of insulation thickness Insulation Screening The cable shall have a screen over the insulation of each core, which shall consist of a nonmetallic semi-conducting part in combination with a metallic part. The non-metallic part shall be applied directly upon the insulation and shall be a layer of extruded semi-conducting compound. This screen shall be formed in such a way that it is readily removed for jointing. The metallic part shall be stranded copper applied over the layer of semi conducting compound. The insulation screen shall be capable of carrying an earth fault current of 10KA for 1 sec. without damage Over sheath The over sheath shall be an extruded layer of red PVC suitable for UV stabilized complying with the requirements of IEC The external surface of the over sheath shall be embossed at every 1000 mm gap along two or more lines approximately equally spaced around the circumferences ELECTRIC CABLE 11000V, and the letters Dhaka Electric Supply Company Limited (DESCO). The letters and figures shall be raised and shall consist of upright block characters. The maximum size of the characters shall be 13mm and the minimum size 15% of the approximate overall diameter

17 6-16 Section VI. Schedule of Supply of the cable. The gap between the end of one set of embossed characters and the beginning of next shall not be greater than 300mm. The manufacturer s name shall be provided throughout the length of the cable Armour The armour shall consist of a single layer of galvanized steel wires in accordance with IEC The galvanized steel wire shall comply with BS When joints in the wire are necessary they shall be brazed or welded and any wire shall be not less than 1 mm from the nearest joints in any other armour wire in the complete cable Manufacturer Identification The manufacturer identification shall be printed with black colour on the identifying tape. It shall show the rated voltage, conductor size, the year in which the cable was manufactured, and name of manufacturer at an interval of not more than 1000 mm throughout the length of the cable. The designated voltage and cable marking shall also be embossed on the outer PVC covering Continuous Current Rating The continuous current rating of the cable shall be calculated in accordance with the procedure described in IEC 287 based on the site ambient condition including solar radiation, with the insulation parameters as specified. The maximum conductor temperature shall not exceed 90 C when carrying the rated current under the most onerous site conditions Short Circuit Rating The cable shall be capable of withstanding without damage or permanent distortion the specified maximum short circuit current for the specified times. The temperature of the conductors during the passes of the specified maximum fault current for the specified time shall not exceed 250 C General Requirement of 11KV XLPE, 3-Core, 300 mm 2 U/G Copper cable Item Description of Items Unit Particulars No. 1 Nominal System Voltage KV 11 2 Rated Voltage (IEC 183) KV 6/10 3 Cross sectional Area of mm Conductors 4 Insulation thickness mm Average thickness shall not be less than 8.0 nominal value as per IEC 502. However, thickness at any point may be less than nominal value provided that the difference does not exceed 0.1mm + 10% of nominal

18 Section VI. Schedule of Supply 6-17 value. 5 Manufacturing process Manufactured through VCV. 6 Conductor Material Copper 7 Shape of Conductor Compact Circular 8 Type of Conductor Screen Semi-conducting XLPE 9 Conductor Temperature at end of short Circuit C Indoor Termination Kits for 11KV XLPE, 3-Core, 300 mm 2 U/G Copper cable i Application For 11KV, 3-core, XLPE 300 mm 2 Copper Conductors ii Installation For Indoor switchgear terminations iii System 11KV, effectively earthed system iv Cable conductor 300 mm 2 Copper Conductors v Kit content - Heat shrinkable high voltage insulating and non-tracking tubing - Heat shrinkable stress control tubing - Stress relieving mastic strip - Truck resistant sealant tape - Cable preparation kit - Solder less earth connection kit - Compression lugs for 300 mm 2 Copper Conductors - Installation instructions Outdoor Termination Kits for 11KV XLPE, 3-Core, 300 mm 2 U/G Copper cable i Application For 11KV, 3-core, XLPE 300 mm 2 Copper Conductors ii Installation For outdoor installation on poles/structures iii System 11KV, effectively earthed system iv Cable conductor 300 mm 2 Copper Conductors v Kit content - Heat shrinkable high voltage insulating and non-tracking tubing - Heat shrinkable stress control tubing - Stress relieving mastic strip - Truck resistant sealant tape - Heat shrinkable truck resistant rain skirt - Support insulator - Cable preparation kit - Solder less earth connection kit - Compression lugs for 300 mm 2 Copper Conductors - Support insulators Tee Brackets - Installation instructions Straight-through joint box for 11KV XLPE, 3-Core, 300 mm 2 U/G Copper cable i Application For 11KV, 3-core, XLPE 300 mm 2 Copper Conductors ii Installation For underground horizontal mounting iii System 11KV, effectively earthed system iv Cable conductor 300 mm 2 Copper Conductors v Construction The joint shall be proof against ingress of moisture and water vi Kit content - Compression ferrules - Valid filling tape - Heat shrinkable stress control tubing

19 6-18 Section VI. Schedule of Supply - Truck resistant sealant tape - Heat shrinkable high voltage insulating tape - Heat shrinkable black/red dual wall - Estomeric tube - Roll spring - Heat shrinkable outer jacket tube - Cable preparation kit - Solder less earth connection kit - Misc. other material - Installation instructions 3.6 Technical Specification of 11KV, XLPE, 3CX185 sq.mm, U/G Copper Cable and Jointing Accessories General Technical Requirement Cross Link Polyethylene U/G Cable (XLPE) cables shall be suitable for operation at voltage of 11KV between phases at continuous maximum conductor temperatures of 90 C. the cable shall be suitable in all respect for use on an 11KV system with a nominal three phase fault level of 20KA. The cables and associated fittings, joints and termination shall be so designed to prevent damage to the cable or fittings, except in the immediate vicinity of the fault, in the event of an installation failure at any point which results in a fault current to earth of 10KA for 1 sec. The length of cable on a drum shall be 500M and it shall be shipped on standard nonreturnable steel drum, each drum having stencilled on its side; size, type and length of cable, together with its gross weight, net weight and contract number Conductors Copper conductors shall be stranded, circular and compacted and comply with IEC Cables shall be constructed with three cores of sizes 185 mm 2 Copper conductor Conductor Screening The conductor shall be screened with an extruded layer of semi-conducting material of 0.5mm thickness for both the cables Insulation The insulation shall consist of cross-linked polyethylene tightly extruded over the conductor screen. The insulation shall generally comply with IEC 60502, except that insulation resistance measurements shall be made on the screened core without immersion in water. The highest possible purity of insulation material is required. The bidder shall demonstrate that adequate precautions are taken to remove contaminants and to eliminate the introduction of particles of contaminants during material handling or extrusion process. The Cable shall be manufactured through VCV/CCV. The insulation material shall be cross-linked by a dry process. A cross-linking process using steam curing will not be permitted.

20 Section VI. Schedule of Supply Insulation Thickness The thickness of insulation shall be determined by taking the average of number of measurements and shall be not less than the values tabulated in IEC Publication 502. Insulation thickness shall not depart from the specified nominal value by an amount exceeding the tolerances specified in IEC Publication 502. The thickness at any point, if less than the specified value, provided the difference does not exceed 10 percent plus 0.1mm, may be acceptable. The thickness of the semi conducting screens on the conductors and over the insulation shall not be included in the measurement of insulation thickness Insulation Screening The cable shall have a screen over the insulation of each core, which shall consist of a nonmetallic semi-conducting part in combination with a metallic part. The non-metallic part shall be applied directly upon the insulation and shall be a layer of extruded semi-conducting compound. This screen shall be formed in such a way that it is readily removed for jointing. The metallic part shall be stranded copper applied over the layer of semi conducting compound. The insulation screen shall be capable of carrying an earth fault current of 10KA for 1 sec. without damage Over sheath The over sheath shall be an extruded layer of red PVC suitable for UV stabilized complying with the requirements of IEC 502, clause 12. The external surface of the over sheath shall be embossed at every 1000 mm gap along two or more lines approximately equally spaced around the circumferences ELECTRIC CABLE 11000V, and the letters Dhaka Electric Supply Company Limited (DESCO). The letters and figures shall be raised and shall consist of upright block characters. The maximum size of the characters shall be 13mm and the minimum size 15% of the approximate overall diameter of the cable. The gap between the end of one set of embossed characters and the beginning of next shall not be greater than 300mm. The manufacturer s name shall be provided throughout the length of the cable Armour The armour shall consist of a single layer of galvanized steel wires in accordance with IEC 502. The galvanized steel wire shall comply with BS When joints in the wire are necessary they shall be brazed or welded and any wire shall be not less than 1 mm from the nearest joints in any other armour wire in the complete cable.

21 6-20 Section VI. Schedule of Supply Manufacturer Identification The manufacturer identification shall be printed with black colour on the identifying tape. It shall show the rated voltage, conductor size, the year in which the cable was manufactured, and name of manufacturer at an interval of not more than 1000 mm throughout the length of the cable. The designated voltage and cable marking shall also be embossed on the outer PVC covering Continuous Current Rating The continuous current rating of the cable shall be calculated in accordance with the procedure described in IEC 287 based on the site ambient condition including solar radiation, with the insulation parameters as specified. The maximum conductor temperature shall not exceed 90 C when carrying the rated current under the most onerous site conditions Short Circuit Rating The cable shall be capable of withstanding without damage or permanent distortion the specified maximum short circuit current for the specified times. The temperature of the conductors during the passes of the specified maximum fault current for the specified time shall not exceed 250 C General Technical Requirement of 11KV XLPE, 3-Core, 185 mm 2 U/G Copper cable Item Description of Items Unit Particulars No. 1 Nominal System Voltage KV 11 2 Rated Voltage (IEC 183) KV 6/10 3 Cross sectional Area of mm Conductors 4 Insulation thickness mm Average thickness shall not be less than 8.0 nominal value as per IEC 502. However, thickness at any point may be less than nominal value provided that the difference does not exceed 0.1mm + 10% of nominal value. 5 Manufacturing process Manufactured through VCV/CCV. 6 Conductor Material Copper 7 Shape of Conductor Compact Circular 8 Type of Conductor Screen Semi-conducting XLPE 9 Conductor Temperature at end of short Circuit C Indoor Termination Kits for 11KV XLPE, 3-Core, 185 mm 2 U/G Copper cable i Application For 11KV, 3-core, XLPE 185 mm 2 Copper Conductors ii Installation For Indoor switchgear terminations iii System 11KV, effectively earthed system iv Cable conductor 185 mm 2 Copper Conductors v Kit content - Heat shrinkable high voltage insulating and non-tracking tubing - Heat shrinkable stress control tubing

22 Section VI. Schedule of Supply Stress relieving mastic strip - Truck resistant sealant tape - Cable preparation kit - Solder less earth connection kit - Compression lugs for 185 mm 2 Copper Conductors - Installation instructions Outdoor Termination Kits for 11KV XLPE, 3-Core, 185 mm 2 U/G Copper cable i Application For 11KV, 3-core, XLPE 185 mm 2 Copper Conductors ii Installation For outdoor installation on poles/structures iii System 11KV, effectively earthed system iv Cable conductor 185 mm 2 Copper Conductors v Kit content - Heat shrinkable high voltage insulating and non-tracking tubing - Heat shrinkable stress control tubing - Stress relieving mastic strip - Truck resistant sealant tape - Heat shrinkable truck resistant rain skirt - Support insulator - Cable preparation kit - Solder less earth connection kit - Compression lugs for 185 mm 2 Copper Conductors - Support insulators Tee Brackets - Installation instructions Straight-through joint box for 11KV XLPE, 3-Core, 185 mm 2 U/G Copper cable i Application For 11KV, 3-core, XLPE 185 mm 2 Copper Conductors ii Installation For underground horizontal mounting iii System 11KV, effectively earthed system iv Cable conductor 185 mm 2 Copper Conductors v Construction The joint shall be proof against ingress of moisture and water vi Kit content - Compression ferrules - Valid filling tape - Heat shrinkable stress control tubing - Truck resistant sealant tape - Heat shrinkable high voltage insulating tape - Heat shrinkable black/red dual wall - Estomeric tube - Roll spring - Heat shrinkable outer jacket tube - Cable preparation kit - Solder less earth connection kit - Misc. other material - Installation instructions

23 6-22 Section VI. Schedule of Supply 4.0 Other Specific Requirements 4.1 Documentation: The followings shall be submitted along with the bid. (i) (ii) Printed Catalogues with detail technical information. Documentary evidence on equipment & facilities so as to satisfactorily manufacture the bid cable to maintain its acceptability with respect to the following items: For all extruded layers: - Layer thickness at selected point; - Average thickness around cable; - Eccentricity; - Spot minima; - Ovality of Cable; - Outside diameter; - Voids in the insulation; - Faults at the screen interfaces, e.g. protrusions Proof of having required equipment & facility should be submitted. (iii) (iv) (v) Cable constructional diagram and dimensions. Detail calculations of screen sizes to withstand the earth fault current stated in Technical Specification. Type Test Reports on offered Cables or higher current rating of the same voltage level in accordance with the latest version of IEC Standard and test report earlier than 10 years as of the date of bid submission will not be accepted. These tests shall be from an independent and well-known testing laboratory like KEMA, CESI, CPRI, CEPRI, PEHLA or any international accredited laboratory (The accreditation document shall be provided). The following test certificates shall be included in the Type Test Report otherwise bid shall be rejected: Electrical test: Partial Discharge Test; Bending Test; Tan measurement; Heating Cycle Test; Impulse Test; Non-electrical Test: Measurement of Thickness of Insulation; Measurement of Thickness of non-metallic Sheaths; Test for determining the mechanical properties of insulation before and after ageing;

24 Section VI. Schedule of Supply 6-23 Test for determining the mechanical properties of non-metallic sheaths before and after ageing; Loss of mass test on PVC sheathe of type ST 2 Pressure test at high temperature on insulations and non-metallic sheaths Test on PVC insulation and sheaths at low temperatures Test for resistance of PVC insulation and sheaths to cracking (heat shock test) Hot set test for XLPE insulations Shrinkage test for XLPE insulation Thermal stability test for PVC insulation Strippability test for insulation screen (vi) (vii) (viii) ISO Certification: ISO Certification on offered goods. At least 01(one) piece of offered cable as sample along with the bid for visual inspection. Samples will be returned to the unsuccessful bidders after award of contract to the successful bidder. The samples of the successful bidder will be returned after completion of delivery. All data schedules duly filled up with appropriate technical data. 4.2 Approval of Drawings: The successful bidder shall submit five (5) sets of Drawings and other technical information of the offered goods to the office of the SE (P&D), DESCO within thirty (30) days from the date of signing of the contract agreement, for approval. No work shall be performed in connection with the fabrication and manufacture of the offered goods until the drawings and technical data have been approved. The cost of supplying drawing shall be borne by the supplier. 4.3 Packing: The complete cable drum shall be covered by steel sheet to protect from external thrust and Jointing Kits are to be export-packed and properly protected for shipment, rough transportation and storage. Specific care shall be taken for protection in store and reference is made to the climatic condition prevailing in Bangladesh. Each set of jointing kits shall be sealed in waterproof polyethylene bag having a silicagel packet placed inside the unit and then packed in polystyrene foam gasket closed by self adhesive tape. Rating of the unit shall be marked by marker pen or label on the foam for easy identification. Maximum 10 (ten) sets of Jointing kits are allowed to pack into separate wooden packaging box lined with heavy gauge polyethylene. Between the cartoons, a suitable packing material for protection and preventing their movement should be used. Each box shall have an individual waterproof, transparent and heavy gauge polythene wrapper and bitumen paper and then packed into a five-ply paper carton for Boxes. Silicagel shall be provided inside the each polythene wrapper. The packing case should be able to withstand accidental direct exposure to weather for reasonable period.

25 6-24 Section VI. Schedule of Supply The supplier shall be responsible for damages due to inadequate packing. A packing list showing the contents of each packing shall be enclosed in a waterproof envelope secured to the outside of the packing case. A copy of the packing list shall also be enclosed inside the package. All packages imported are liable to be opened for Customs examination and packing shall therefore be designed to facilitate opening and re-packing thereafter. A red band (20 cm. wide) shall be painted all around each package. Each package shall have the following information printed on it in bold letters: - Name of supplier. - Port of Loading. - Port of destination. - Name of Consignee. - Contract Number. - Brief description of Stores. - Number of Packages. - Gross and net weight. - Measurements. In addition, each package shall be clearly marked or stencilled in red on two sides, the shipping mark, DESCO, Bangladesh inscribed within a triangle mark as shown below: The Shipping Mark DESCO BANGLADESH On the other two sides arrow marking with the wording THIS SIDE UP and FRAGILE shall be clearly marked or stencilled to indicate the face of the package to be kept upward. FRAGILE THIS SIDE UP 4.4 Inspection and Testing: The Purchaser shall have the right to inspect/test the goods/materials to confirm their conformity to the specification The purchaser shall be entitled at all reasonable time during manufacture to inspect, examine and test of goods/materials at the manufacturers premises, workmanship and performance The Supplier shall, after consulting the purchaser, give the Purchaser reasonable notice in writing of the date on and the place at which any material or equipment will be ready for testing as provided in the contract and unless the purchaser shall attend at the place so named on date, which the supplier has stated in his notice, the supplier

26 Section VI. Schedule of Supply 6-25 may proceed with the tests, which shall be deemed to have been made in the purchaser s presence, and shall forth with forward to the purchaser duly certified copies of test readings When the purchaser intends to attend the test he shall promptly inform the supplier accordingly in writing, so that he can take action. The purchaser shall give the supplier timely notice in writing of his intention to attend the test Where the supplier provides for tests on the premises of the supplier or of any manufacturer of the supplier, except where otherwise specified, shall provide free of charge such assistance, labour, materials, electricity, fuel, stores, apparatus and instruments as may be requisite and as may be reasonably demanded to carry out such test efficiently. This test shall be performed as per relevant IEC/BS Standard or equivalent and only routine tests as agreed upon, will be performed As and when the purchaser is satisfied that any materials/equipment shall have passes the tests referred to in this clause, purchaser shall notify the contractor in writing to that effect Should any inspected/tested goods fail to conform to the specification, the Purchaser shall have the right to reject any of the items or complete batch if necessary. In that case Supplier have to replace the Equipment and to make good of them without any financial involvement to the Purchaser. In case any of the Equipment found not conforming to the specification at the time of post landing Inspection, the supplier will in no way be relived from the responsibility of replacing them on making them good at their own cost, despite the Equipment where found good at the time of Preshipment Inspection Nothing in this clause shall in any way release the supplier from any warranty or other obligations under the contract. 4.5 Costs related to inspection and testing Where the supplier provides for tests on the premises of the supplier or of any manufacturer of the supplier, except where otherwise specified, shall provide free of charge such assistance, labour, materials, electricity, fuel, stores, apparatus and instruments as may be requisite and as may be reasonably demanded to carry out such test. All costs pertaining to Inspector's fees, travel, lodging and incidental expenses shall be borne by the purchaser. 4.6 Post Landing Inspection (PLI): Post landing inspection shall be done by a PLI committee of DESCO immediately after arrival of the goods at the designated store of DESCO. The program of such inspection shall be intimated to the representative of Supplier. The PLI committee in its report shall mention the exact/assessed quantity of goods. The Post Landing Inspection of goods shall generally cover the following, but not limited to it: (i) (ii) (iii) Visual Inspection of goods; Conformance with approved drawings with respect to dimensions/type/size. If necessary, appropriate test on supplied goods.

27 6-26 Section VI. Schedule of Supply 5.0 Guaranteed Technical Data Schedule 5.1 Guaranteed Technical Data Schedule for 33KV, XLPE, 1Cx 500 Sq.mm U/G Copper Cable (to be filled up by the bidder/manufacturer with appropriate data, otherwise the bid will be treated as non-responsive) Sl. No. Description Unit Required Specification 1 Name & address of the Manufacturer To be mentioned 2 Type/Model of the offered Cable To be mentioned 3 Nominal System Voltage KV 33 4 Rated voltage of Cable KV 18/30(36) 5 Process of manufacturing VCV Number of core and Cross 6 sectional area of conductor Sq.mm 1X500 cores 7 Conductor materials Copper 8 Minimum no. of strand No Diameter of each strand mm To be mentioned 10 Shape of conductor Compacted Circular 11 Type of conductor screen Semi-conducting 12 Thickness of semiconducting screen mm Average thickness of insulation mm Process of curing Dry process 15 Material of Insulation Cross Linked Polyethylene (XLPE) 16 Type of non-metallic insulating screen Semi-conducting Thickness of semiconducting 17 insulation mm 1.0 screen 18 Number and diameter of copper screen strands No./mm Based on design calculation 19 Composition of filler MDPE 20 Composition of bedding Extruded PVC 21 Thickness of bedding mm Based on design calculation 22 Number and diameter of armour wire No./mm As per IEC Average thickness of MDPE over sheath mm Based on design calculation 24 Nominal diameter of complete cable mm Based on design calculation 25 Nominal weight per meter of complete cable Kg/m Based on design calculation 26 Minimum radius of bend round which cable can be laid mm 12xD Manufacturer s Particulars

28 Section VI. Schedule of Supply Maximum D.C. resistance of conductor per meter at 20 C Ohm/m Based on design calculation Maximum A.C. resistance of conductor per meter at a maximum conductor Ohm/m Based on design calculation temperature Star reactance per meter of cable at 50Hz Ohm/m Based on design calculation Star capacitance per meter of cable at 50Hz pf/m Based on design calculation Charging current per conductor per meter at ma Based on design calculation 18000/30000Volts, 50Hz Minimum current carrying capacity of conductor in A 775 ground at 20 C Maximum conductor temperature under C 90 continuous loading Short circuit withstand capacity of the cable for 1 KA Min 31.5 sec. Duration Conductor temperature at the end of short circuit C 250 Earth fault withstand capacity for 1 sec. KA Min. 25 Screen short circuit withstand capacity KA Min. 25 Armour short circuit capacity KA Based on design calculation Cable resistance, reactance: a) for positive sequence Ohm/km Based on design calculation b) negative sequence Ohm/km Based on design calculation c) zero sequence Ohm/km Based on design calculation Seal and Signature of the bidder

29 6-28 Section VI. Schedule of Supply 5.2 Guaranteed Technical Data Schedule of Jointing Kits for 33KV, XLPE, 1Cx 500 Sq.mm U/G Copper Cable (to be filled up by the bidder/manufacturer with appropriate data, otherwise the bid will be treated as non-responsive) Item Sl. No. Description of Items Required Particulars Manufacturers Particulars Indoor Termination Kits for 33KV XLPE, 1Cx500 mm 2 Copper cable i. Name and address of the manufacturer ii. Type/model of the kits iii. Application For 33KV, XLPE, 1Cx500 mm 2 Copper Conductors iv. Insulation For Indoor switchgear terminations v. System 33KV, effectively earthed system vi. Cable conductor 500 mm 2 Copper Conductors vii. Kit content - Heat shrinkable high voltage - insulating and non-tracking tubing - Heat shrinkable stress control tubing - Stress relieving mastic strip - Truck resistant sealant tape - Cable preparation kit - Solder less earth connection kit - Compression lugs for 500 mm 2 Copper Conductors - Installation instructions Outdoor Termination Kits for 33KV XLPE, 1Cx500 mm 2 Copper cable i. Name and address of the manufacturer ii. Type/model of the kits iii. Application For 33KV, XLPE, 1Cx500 mm 2 Copper Conductors iv. Insulation For Indoor installation on poles/structures v. System 33KV, effectively earthed system vi. Cable conductor 500 mm 2 Copper Conductors vii. Kit content - Heat shrinkable high voltage insulating and non-tracking tubing - Heat shrinkable stress control tubing - Stress relieving mastic strip - Truck resistant sealant tape - Heat shrinkable truck resistant rain skirt - Support insulator - Cable preparation kit - Solder less earth connection kit - Compression lugs for 500 mm 2 Copper Conductors - Support insulators Tee Brackets - Installation instructions