Technical Specification

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1 Section - 7 Technical Specification OF 33KV OUTDOOR DROP OUT FUSE CUT-OUT AND FUSE LINK AND 33KV OUTDOOR TYPE SINGLE PHASE METAL OXIDE (ZNO) GAPLESS LIGHTNING ARRESTER 84

2 7.1. TECHNICAL SPECIFICATION OF 33KV OUTDOOR DROP OUT FUSE CUT-OUT AND FUSE LINK This section covers the specification, manufacture, design, testing and delivery of Drop Out Fuse Cut-out (DOFC) to the Stores of BPDB, Bangladesh CLIMATE DATA The equipments to be supplied against this tender shall be suitable for satisfactory use under the following climatic condition: Climate : Tropical, intense sunshine, heavy rain, humid. Maximum Humidity and Temperature sometimes occur simultaneously. Maximum Temperature Minimum Temperature Average daily Temperature Average isokeraunic level : 40 0 C : 03 0 C : 30 0 C : 80 days/ year Relative humidity : % Average annual rain fall Maximum wind velocity Altitude Atmospherical, Mechanical and Chemical impurities : 3454 mm : 200 km/ hour : Sea level to 300 metres : Moderately polluted Equipments as specified will be installed in tropical locations and in a hot humid environment with presence of the insects and vermin. The information is given as a guide for Tenders and no responsibility for its accuracy will be accepted, nor will any claim based on the above be entertained SYSTEM PARTICULARS SL. NO. SYSTEM CHARACTERISTICS VOLTAGE LEVEL 1. Normal System Voltage, KV (Voltage Class) Maximum System Voltage, KV System Frequency, Hz Phase Rotation RST RST RST RST (Anti-Clock wise) 6. Type of System Grounding Solid Solid Solid Solid 7. Rated Fault Level (3-Phase Symmetrical), MVA 3 sec Basic Installation Level, KV LOW VOLTAGE 415/ 240V CHARACTERISTICS: 9. Normal System Voltage, V (Voltage Class) 415/ Type of System Grounding Solid 85

3 7.1.4 STANDARDS Performance, Design & Testing of Outdoor Drop Out Fuse Cut-out (DOFC) and Fuse Link shall conform to the latest edition of the IEC 282-2/ BS 729/ ANSI-C 37.40, & and NEMA Standard or equivalent international Standards unless otherwise specified herein General Specification 1. Installation Outdoor mounted on cross-arm angle/ channel structure. 3. Application Protection of 33/0.415KV, 250/200/ 100KVA Distribution Transformer. 4. Type Open drop out expulsion. 5. Nominal rated voltage (3 phase) 33 KV 6. Max. System voltage (3 phase) 36 KV 7. Frequency 50 Hz. 8. Continuous Current Rating 200 A 9. Basic Insulation Level (Impulse Voltage) 170 KV 10. Power Frequency withstand Voltage 70 KV (Across the Isolating distance of the fuse base) 11. Creepage Distance 25mm/KV (Minimum) 12. Fuse holder type Heavy duty, sealed cap with eye at upper end of the fuse holder. 13. Fuse link continuous ratings 5/10 Amps. 14. Fuse link type K-type as per NEMA standard, medium melting high surge. 15. Rated interrupting capacity, 8 KA (RMS) 16. Standard Design, manufacture, testing and performance shall be in accordance with the latest revision of relevant IEC-129 and NEMA Standard FEATURES & ACCESSORIES a) DOFC shall be with Guide. b) Each cut-out shall be completed including fuse holder and fuse link. c) The design shall provide reasonable protection against earthing by animals or birds. d) The terminal shall be Tin-plated and shall be suitable to accommodate for ACSR Merlin/ Grossbeak/ Hawk or suitable conductor as required. e) All current carrying parts shall be of electrolytic high conductivity copper with the contacts hard drawn copper and silver-plated. f) Bracket shall be provided for steel cross-arm mounting with nuts bolts etc. g) All hardware shall be non-ferrous metal or if ferrous should be hot dip galvanized after fabrication in accordance to latest revision of relevant IEC/ BS Standard. h) Fused cut-out units to latest revision of relevant IEC standard are required to protect and provide insulator for distribution transformer. The unit shall be supplied complete with galvanized steel brackets bolt nuts and washers for mounting. They shall be provided with a latch mechanism, which will open the fuse element when the fuse has operated. The latch mechanism shall be constructed as to operate easily from the ground with the aid of an operating stick. i) Insulators shall be of the post type made of porcelain to withstand a mechanical force of 1600N. Current carrying equipment shall be made of copper or copper alloy. The nominal rating of the unit shall be 200A. In addition the units shall be capable of being opened under 86

4 normal transformer magnetizing currents of transformers up to 250KVA to permit transformer isolation. j) Termination shall be suitable for connection of compression terminal lugs. k) The fuse element shall be totally enclosed by a fuse holder to protect it from the atmosphere specified electrical characteristics of the fuse units shall be to latest revision of relevant IEC standard. l) Fuse links for the fuse cut-out units shall be of the disconnecting type suitable for opening closing and removal by an operating stick. m) Each fuse link shall be suitable for a common fuse base. n) Each DOFC shall be furnished with a stainless steel rating plate mentioning manufacturer s name, clients name, year of manufacturer, contract no and model no in English INFORMATION REQUIRED The Bidder/ Manufacturer as per tender requirements shall provide all information. Besides these, the following information/ Documents have to be submitted: (a) Detail Outline and General Arrangement drawings. (b) Manufacturer s printed catalogue describing specification and technical data of the offered type DOFC and Fuse Link (c) Maximum clearing time and minimum melting time curve characteristics for Fuse Link. (d) Manufacturer's ISO 9001 certificate. (e) 1 (one) no. sample of the offered type DOFC with 2 nos. Fuse Link of each size DOCUMENTATION The following documents are to be submitted along with the bid, otherwise the bid will be rejected : A. COMMERCIAL Tenderer shall be eligible as per ITT Clause No. 4 and they should submit Bid validity, Bid Bond, Bid Bond validity, Price Schedule, Delivery Schedule, Authorisation of the signatory, Tender Submission Sheet, Tenderer Information Sheet & Documentary evidence for establishing the Tenderer s Qualifications, etc. and all other documents including information related to rejection clause as per Tender Document. B. TECHNICAL 1) Guaranteed Technical Particulars (GTP) shall be properly filled up and signed by both Manufacturer and Tenderer. 2) Letter of authorisation from the Manufacturers, in case, the bidder is not the manufacturer, in prescribed Form. 3) 2 (two) nos. of Manufacturer s Supply record for similar or higher rating of offered type DOFC & Fuse Link within the last 5 (five) years from the date of opening in the following format (The supply record covering at least 25% of the tendered quantity in a single tender will be considered only): Sl. No Name, Address, Phone No. & Fax No. of the Purchaser Tender No. & Date Tender Value Description of material with Quantity Date of completion of supply 4) Satisfactory Performance Certificates from at least 2 (two) Electricity Utility for similar or higher Current rating of same voltage class of offered Model/ Type DOFC & Fuse Link within the last 5 (five) years from the date of opening. 87

5 5) Type Test Reports (as stated in Clause 7.1.9) for offered type DOFC & Fuse Link from STL (Short-Circuit Testing Liaison) members as per relevant Standards. 6) Manufacturers, who have supplied the same offered item to BPDB within the last 5 (five) years from the date of opening, shall submit Satisfactory Performance Certificate from Director, Purchase, BPDB, Dhaka, for the same offered item. 7) Bidder shall submit at least 1 (one) piece of offered type DOFC and 3 (three) pieces of each type of offered Fuse Links as samples along with the bid. The submitted sample(s) should comply the technical requirements of the tender document. It is noted that the submitted sample(s) of the responsive Tenderer s will be tested as per latest version of relevant IEC/ BS or equivalent international standards as mentioned in the tender at CERS, BPDB or BUET/ CUET/ KUET/ RUET. If the submitted sample failed in test to conform the technical specification, the tender of the Tenderer will be rejected. The cost of test will be borne by the purchaser TEST REPORTS : The following Type Test reports along with test results for offered type DOFC and Fuse Link or higher current rating of same voltage class of design, confirming to the tender document shall be submitted with the offer from STL (Short-Circuit Testing Liaison) members as per latest revision of relevant IEC standard:-. a) Impulse Voltage withstand tests. b) Power Frequency withstand tests. c) Temperature Rise tests. d) Time/ Current Characteristics APPROVAL OF DRAWING & SPECIFICATION Design, Drawing diagram, Specification and Technical Particulars & guarantees etc, shall be submitted to the Engineer, Director, Design & Inspection II, BPDB by the bidder for approval, prior to the manufacturing of the goods (DOFC with Fuse Link). The Bidder shall have to submit 3 (three) sets of the same for approval within 15 days from the date of issue of purchase order TESTS AT MANUFACTURERS WORKS General Functional electrical, material, mechanical and hydraulic tests shall be carried out at manufacturers premises. The extent and method of recording the results shall be agreed by the Purchaser in ample time to enable the tests to be satisfactorily witnessed or to make any changes to the proposed program of tests. Material Tests The supplier shall provide test pieces free of charge as required to enable the quality of the material to be determined at the supplier s expense. Purchaser may at its own discretion and by specific arrangement accept certified particulars of tests carried out in the absence of his authorized representative. Type Test Type tests are required to prove the general design of the offered equipments/ materials. The Tenderer shall submit the type test reports of the offered equipments/ materials from internationally reputed independent testing laboratory as per latest version of relevant IEC/ BS or equivalent international standards as mentioned in the tender as per relevant clause. Routine Tests 88

6 All equipments/ materials shall be subjected to routine tests as per latest version of relevant IEC/ BS or equivalent international standards as mentioned in the tender at the manufacturers works and shall include, but not be limited to an operational test. 89

7 Technical Specifications Of 33kv Outdoor Type Single Phase Metal Oxide (Zno) Gapless Lightning Arrester 7.2 GENERAL This section of the document includes the design, manufacture, testing & inspection of 33KV Outdoor Type Single Phase Metal Oxide (ZnO) Gapless Lightning Arrester SPECIFICATIONS 1 Application Distribution Transformer/ Line/ Cable protection/ Power Transforemr of heavy duty class. 2 Type of Arrester Station Class Metal Oxide (ZnO), Gapless 3 Construction Single Unit, basically consisting of gapless hermetically sealed in with non-linear characteristics with high energy capacity, all enclosed in porcelain housing. 4 Installation Outdoor 5 Mounting Pole Mounted steel bracket 6 Nominal System Voltage 33 kv 7 Maximum continuous operating Voltage 36 kv 8 System Frequency 50 Hz 9 Number of Phase 1 10 Rated Arrester Voltage 36KV 11 Continuous Operating Voltage 30 kv 12 Nominal Discharge Current 10 KA (KAp) of 8/20 micro second wave 13 Power Frequency withstands voltage of 70 kv (Dry& wet) Lightning Arrester Housing, Dry & Wet. 14 Impulse Withstand Voltage of Lightning 170 kv (peak) Arrester Housing. 15 Lightning Impulse Residual Voltage 170 kv (peak) (8/20 micro-second wave) 16 Basic Insulation level 170KV 17 Steep Current Impulse Residual Voltage 40 kv (peak) at 10KA of 1 micro-second front time. 18 High Current Impulse Withstand Value Minimum 100 KA (4/10 micro-second) 19 Minimum Energy Discharge capability 5 (KJ/KV) at rated voltage. 20 Temporary over voltage withstand 42KV capability (KVrms) for 10.0 secs 21 Creepage distance (minimum) 25 mm/ kv 22 Partial Discharge(pico-coulomb) when Not exceeding 10 PC energized at 1.05 times its continuous operating voltage. 23 Earthing system earth with earthing transformer 24 system Fault level 25KA for 3sec 25 Standard Performance, Design & Testing shall be in accordance to IEC / ANSI- C or equivalent international Standards unless otherwise specified herein. 90

8 7.2.2 FEATURES & ACCESSORIES - The arresters shall be ZnO type, basically consisting of gap-less hermetically sealed in with non-linear volt-ampere characteristics with high energy capacity. ZnO arrester shall have excellent thermal stability for high energy surges, external pollution & temporary over voltage. - The Line lead & earthing terminal with clamps shall be provided, suitable to accommodate AAC/ ACSR/ Copper Conductor of diameter from 10.0mm to 15 mm. - All ferrous parts exposed to atmosphere shall be Cadmium plated. The arrester shall be suitable for mounting vertically. The housing shall be of high quality porcelain containers of heavy construction sealed against the entry of moisture and oxygen and free from influence of moisture and weather condition. - Bidders shall supply surge counter /Monitor for each phase of the surge arrester. It shall be integrated into the arrester ground connection and counts the surge arrester responses that have occurred. Surge counter with leakage current meter shall also offer monitoring of arrester leakage current. The surge arrester can be analog or digital type. - Each Single pole arrester shall be furnished with a stainless steel rating plate mentioning manufacturer s name, client name, year of manufacturing & model of LA. - Mounting steel bracket and fixing bolts, nut, washer, Standard clam etc. shall be provided with the arrester for steel cross-arm. The mounting steel bracket & necessary fittings shall be hot dip galvanized as per BS The lightning Arrestors shall be of adequate Pressure Relief Class as per IEC , fitted with Pressure Relief Devices and Arc diverting ports to minimise possibilities of shattering of porcelain housing and providing path for flow of rated fault currents in the event of arrestor failure. The Bidder shall indicate the methods need to provide pressure relief or to prevent explosive sheltering of the porcelain housing. No chemical action shall be take place nor shall the arrester material show deterioration as a result of the specified operating duty. No maintenance other than routine inspection shall be required under service conditions. - The necessary connecting wire (5meter for each LA) for the connection of each Lightening arrester to surge counter shall also be included in the scope of supply INFORMATION REQUIRED The Bidder/ Manufacturer as per tender requirements shall provide all information. Besides these, the following information/ Documents have to be submitted:- (a) Detail dimensional drawing of the offered type LA. (b) Manufacturer's ISO 9001 certificate. (c) Manufacturer's Printed catalogue describing specification, technical data, rated voltage, current, creepage distance, characteristics curve etc. of the offered type LA. 7.8 DOCUMENTATION The following documents are to be submitted along with the bid, otherwise the bid will be rejected. A. COMMERCIAL Tenderer shall be eligible as per ITT Clause No. 4 and they should submit Bid validity, Bid Bond, Bid Bond validity, Price Schedule, Delivery Schedule, Authorisation of the signatory, Tender Submission Sheet, Tenderer Information Sheet & Documentary evidence for 91

9 establishing the Tenderer s Qualifications, etc. and all other documents including information related to rejection clause as per Tender Document. B. TECHNICAL 1) Guaranteed Technical Particulars (GTP) shall be properly filled up and signed by both Manufacturer and Tenderer. 2) Letter of authorization from the Manufacturers, in case, the bidder is not the manufacturer, in prescribed Form. 3) 2 (two) nos. of Manufacturer s Supply record for similar or higher Current rating of same voltage class of offered Lightning Arrester within the last 5 (five) years from the date of opening in the following format (The supply record covering at least 25% of the tendered quantity in a single tender will be considered only). Sl. No Name, Address, Phone No. & Fax No. of the Purchaser Tender No. & Date Tender Value Description of material with Quantity Date of completion of supply 4) Satisfactory Performance Certificates from at least 2 (two) end users (Electricity Utility) for similar or higher Current rating of same voltage class of offered Model/ Type Lightning Arrester within the last 5 (five) years from the date of opening. 6) Type Test Reports (as stated in Clause 7.2.9) for offered type LA from STL (Short-Circuit Testing Liaison) members as per relevant Standards. 6) Manufacturers, who have supplied the same offered item to BPDB within the last 5 (five) years from the date of opening, shall submit Satisfactory Performance Certificate from Director, Purchase, BPDB, Dhaka, for the same offered item. 7) At least 1(one) piece of offered type 33KV Single Phase Lightning Arrester as sample along with the tender. The submitted sample should comply the technical requirements of the tender document. It is noted that the submitted sample of the responsive Tenderers will be tested as per latest version of relevant IEC/ BS or equivalent international standards as mentioned in the tender at CERS, BPDB or BUET/ CUET/ KUET/ RUET. If the submitted sample failed in test to conform the technical specification, the tender of the Tenderer will be rejected. The cost of test will be borne by the purchaser TEST REPORTS The following test reports including tests carried out for the offered type 33KV Single Phase Lightning Arrester in accordance with the latest version of IEC , which are issued by STL (Short-Circuit Testing Liaison) members by confirming design to the tender document shall be submitted with the offer:- a) Insulation Withstand tests on the Arrester housing; b) Step Current Impulse Residual Voltage test; c) Lightning Impulse Residual Voltage test; d) Long Duration Current Impulse withstand test; e) High Current Impulse operating duty test; f) Power Frequency voltage versus time curve; g) Partial Discharge test APPROVAL OF DRAWINGS & SPECIFICATIONS The Bidder shall have to submit 3 sets of Design, Drawing, Technical Specification, Features & Accessories, Guaranteed Technical Particulars of offered type Lighting Arrester along with 92

10 manufacturer's printed catalogue, to the Engineer, Director, Design & Inspection II, BPDB within 15 days from the date of signing the Contract for approval, prior to the manufacturing of the goods TESTS AT MANUFACTURERS WORKS General Functional electrical, material, mechanical and hydraulic tests shall be carried out at manufacturers premises. The extent and method of recording the results shall be agreed by the Purchaser in ample time to enable the tests to be satisfactorily witnessed or to make any changes to the proposed program of tests. Material Tests The supplier shall provide test pieces free of charge as required to enable the quality of the material to be determined at the supplier s expense. Purchaser may at its own discretion and by specific arrangement accept certified particulars of tests carried out in the absence of his authorized representative. Type Test Type tests are required to prove the general design of the offered equipments/ materials. The Tenderer shall submit the type test reports of the offered equipments/ materials from internationally reputed independent testing laboratory as per latest version of relevant IEC/ BS or equivalent international standards as mentioned in the tender. Routine Tests All equipments/ materials shall be subjected to routine tests as per latest version of relevant IEC/ BS or equivalent international standards as mentioned in the tender at the manufacturers works and shall include, but not be limited to an operational test. 7.3 TECHNICAL ORIENTATION AND QUALITY TEST WITNESS The Purchaser shall have the right to inspect, examine and test 33KV DOFC and 33KV LA 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. At least the Routine tests of the following equipments shall be carried out as per latest version of relevant IEC/ BS or equivalent international standards as mentioned in the tender at the manufacturer premises or other places where the test facilities are available. The Supplier shall, after consulting the purchaser, give notice to the Purchaser in writing of the date and the place where the material or equipment will be ready for quality witness testing. 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, labor, materials, electricity, fuel, stores, apparatus and instruments as may be requisite and as may be reasonably demanded to carry out such test efficiently. These tests shall be performed as per latest version of relevant IEC/ BS or equivalent international standards as mentioned in the tender and only routine tests as agreed upon will be performed. As and when the purchaser is satisfied that any materials/ equipments shall have passes the tests referred to in this clause, purchaser shall notify the tenderer 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 has to replace the equipment and to make good of them and the supplier shall conduct similar predelivery Inspection and factory tests without any financial involvement to the purchaser. In case 93

11 any of the Equipment found not conforming to the specification at the time of post landing Inspection, the supplier will in no way be relieved from the responsibility of replacing them on making them good at their own cost, despite the Equipment were found good at the time of Factory Acceptance Test. Nothing in this clause shall in any way release the supplier from any warranty or other obligations under the tender. BPDB s Inspection Team ( at least 03 Engineers) shall have to conduct Technical Orientation and Quality Test Witness at the manufacturer s factory premises. The cost incurred for this purpose shall be borne by the tenderer and the cost in this regard shall be deemed is included in the offered price. The cost of Air Tickets (both way) from Bangladesh to Manufacturer s Country (place of Technical Orientation and Quality Test Witness), Hotel Accommodation etc. will be borne by the Supplier. Other than this, the Supplier will pay a standard amount of pocket money(100usd/day) per day (excluding journey period). The period for this purpose is more or less 07 (seven) days (excluding travel period). All the cost for this purpose shall be deemed to be included in the offered price. No goods shall be packed, prepared for shipment/delivery unless it has been approved including factory Test reports and written instructions has been issued by the Purchaser. The Tenderer has mentioned the place of Technical Orientation and Quality Test Witness in the following table:- Sl. No. 01. Item Period of Technical Orientation and Quality Test Witness Place & Country of Technical Orientation and Quality Test Witness 7.4 POST-LANDING INSPECTION AND TESTING : The Supplier shall inform the purchaser immediately after arrival of the goods at the designated store of BPDB (as per delivery schedule). An Inspection team of BPDB shall perform the postlanding inspection in presence of supplier's representative. The Supplier shall arrange the program of post-landing inspection. Any defect or damage have been found at post-landing inspection, the defective or damaged materials/ goods to be replaced by the supplier at his own cost within the stipulated time. The purchaser s right to inspect, test (if necessary) and reject the goods after delivery at the designated store of BPDB shall in no way be limited or waived by reason of the goods having previously been inspected, tested and passed by the purchaser prior to the good's delivery. The Inspection team will check the physical conditions and quantity of the goods delivered. If necessary, the inspection team will select the sample of good(s) and sent the selected sample goods to CERS, BPDB or BUET/ CUET/ KUET /RUET (as selected by the inspection team) to carryout the test(s) as per tender to confirm the conformity to the approved Technical Specifications, Guaranteed Technical Particulars (GTP), drawings and relevant standards. If the tested sample(s) fail to confirm the specifications in tests, the full consignment will be rejected. All cost of testing of Materials/ Goods including carrying, loading, un-loading etc. will be borne by the supplier. 94

12 Section - 8 GUARANTEED TECHNICAL DATA SCHEDULE OF 33KV OUTDOOR DROP OUT FUSE CUT-OUT AND FUSE LINK AND 33KV OUTDOOR TYPE SINGLE PHASE METAL OXIDE (ZNO) GAPLESS LIGHTNING ARRESTER 95

13 8.1 GUARANTEED TECHNICAL PARTICULARS OF 33KV OUTDOOR DOFC (To be filled up by the Manufacturer in Manufacturer Letterhead Pad, otherwise the bid shall be rejected.) KV OUTDOOR DOFC Sl. No. Description Unit BPDB's Requirement 1. Manufacturer s Name and Country - To be mentioned 2. Manufacturer s Model no. - To be mentioned 3. Frequency Hz System Nominal Voltage KV System Maximum Voltage KV Continuous current rating of cut-out. A Basic Insulation Level (BIL) KV Creepage Distance mm 25mm/KV 9. Power Frequency withstand Voltage KV 70 (Across the isolating distance of fuse Base). 10. Rated Normal Current A Fuse Rating A Fuse Type A HRC Cartridge 13. Rated Short Time Withstand Current (for KA 25 3 sec.) 14. Installation - Outdoor 15. Type - Air 16. Construction - Open 17. Operation - Gang 18. Operating Mechanism - Manual 19. Mounting Position - Vertical 20. Number of Pole Nos. 3 (Three) 21. No. of break per pole Nos. To be mentioned 22. Type of contact - To be mentioned 23. Materials of contact service - To be mentioned 24. Maximum Switching KV To be mentioned 25. Insulator material strength KN To be mentioned 24. Air gap between pole of phase mm To be mentioned 25. Type of operating mechanism - To be mentioned 26. Dimensions (L x W x H) mm To be mentioned 27. Total weight of unit Kg To be mentioned 28. Line charging current breaking capacity A To be mentioned 29. Magnetizing current breaking capacity A To be mentioned 30. Standard - IEC 129 Manufactur er's Guaranteed Particulars Manufacturer s Seal & Signature Bidder Seal & Signature 96

14 8.1.2 GUARANTEED TECHNICAL PARTICULARS OF 33KV SINGLE PHASE LIGHTNING ARRESTER (To be filled up by the Manufacturer in Manufacturer Letterhead Pad, otherwise the bid shall be rejected) Sl. No. Description Unit BPDB's Requirement 01 Manufacturer s Name and Country - To be mentioned 02 Manufacturer s model No. - To be mentioned 03 Type of the Arrester - Metal Oxide (ZnO), Gapless 04 Rated Arrester Voltage kv Max. System Voltage KV Continuous Operating Voltage kv Nominal Discharge Current (8/20micro KA 10 sec) 08 Power Frequency withstand voltage of the Arrester Housing, Dry & Wet kv rms 70 (Dry)& 70 (Wet) 09 Impulse withstand Voltage of the kv (peak) 170 Arrester Housing. 10 Lightning Impulse Residual Voltage kv (peak) 170 (8/20 micro-second wave) 11 Maxm. Steep Current Impulse Residual kv (peak) 130 Voltage at 10 KA of 1 micro second front time. 12 High Current Impulse Withstand Value KA Min 100KA (4/10 micro second) 13 Temporary Over voltage capability: a) 0.1 Second kv (peak) To be mentioned b) 1.0 Second kv (peak) To be mentioned c) 10 Second kv (peak) To be mentioned d) 100 Second kv (peak) To be mentioned 14 Leakage Current at rated voltage ma < 1 ma 15 Total Creepage distance (minimum) mm/ kv Overall dimension : a) Height mm To be mentioned b) Diameter mm To be mentioned 17 Total weight of Arrester Kg. To be mentioned 18 Line discharge class - Shall be mentioned 19 Short Circuit Current Withstand duration Sec 25KA, 3 sec 20 Minimum Energy Discharge capability (KJ/KV) at rated voltage Min. Bending load (kgm) Surge Counter /Monitor Shall be provided 23 Cable for Connecting Surge Counter Shall be provided 24 Standard - IEC Manufacturer 's Guaranteed Particulars Seal & Signature of the Manufacturer Seal & Signature of the Bidder 97

15 KV FUSE LINK Sl. No. Description Unit BPDB's Requirement 1 Manufacturer s Name & Country - To be mentioned 2 Manufacturer s Model no. - To be mentioned 3 Type - K-Type (NEMA Standard) 4 Rated Voltage KV 33 5 Frequency Hz Rated Current Amps. a) 05 Amps b) 10 Amps 7 Rated interrupting capacity KA 8 (rms) 8 Time/ Current Characteristics - To be furnished 9 Material of fuse Link - To be mentioned 10 Material of fuse cartridge - To be mentioned Manufacturer's Guaranteed Particulars Manufacturer s Seal & Signature Bidder Seal & Signature 98

16 8.02 SCHEDULE OF MANUFACTURERS NAME AND PLACES OF MANUFACTURE & TESTING Item No Description Manufacture's name Place of Manufacture Place of Testing & Inspection 01 33KV Single Phase Lightning Arrester with necessary accessories as per section KV DOFC With Fuse link Seal and Signature of the Bidder 99

17 . Section - 9 DRAWINGS To be submitted by the Bidder zakir/td/

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