DOC:STI/14697/3December 2004 SCHEME OF TESTING AND INSPECTION FOR CERTIFICATION OF Ac Static Transformer operated Watthour (Class .2S & .5S) & VAR-hour Meters (Class 0.2 S, 0.5 S & IS) ACCORDING TO IS 14697:1999 (Including Amendment No.1,2 & 3) 1. LABORATORY – A laboratory shall be maintained which shall be suitably equipped and staffed where different tests given in the specification shall be carried out in accordance with the methods given in the specification. 2. TEST RECORDS - All records of tests, inspection and calibration shall be kept in suitable forms approved by the Bureau. 2.1 All testing apparatus/measuring instruments shall be periodically checked and calibrated and records of such checks/calibration shall be maintained. 2.2 Copies of any records and other connected papers that may be required by the Bureau shall be made available at any time on request. 3. QUALITY CONTROL – It is recommended that, as far as possible, Statistical Quality Control (SQC) methods may be used for controlling the quality of the product during production as envisaged in this Scheme [See IS 397(Part I):1972, IS 397(Part 2):1985 and IS 397(Part 3):1980]. 3.1 In addition, effort should be made to gradually introduce a Quality Management System in accordance with IS/ISO 9000 series as appropriate to the activities of the organization. 11.0 STANDARD MARK – The Standard Mark, as given in Column (1) of the First Schedule of the licence, shall be marked on the rating/name plate fixed to the meter securely, provided always that the meter to which the mark is thus applied conforms to every requirement of the specification. 4.1 MARKING - Every meter shall bear applicable information on the name plate affixed to it as given at clause 7 & 8 of IS 14697:1999 4.2 Each meter shall be sealed as per clause 6.2 of IS 14697:1999 by the manufacturer.. 5.0 PACKING – Meters shall be suitably packed in order to avoid any damage during transit or handling. 6.0 LEVELS OF CONTROL - The tests, as indicated in Table 1 attached and at the levels of control specified therein, shall be carried out on the whole production of the factory which is covered by this scheme and appropriate records and charts maintained in accordance with paragraph 2.0 above. All the production which conforms to the Indian Standards and covered by the licence shall be marked with certification mark of the Bureau. DOC:STI/14697/3 CONTROL UNIT . the decision regarding conformity or otherwise of the control unit to a given requirement shall be made.1 The marking of the product shall be stopped immediately if directed to do so by Bureau for any reason. from the factory or godowns.2 On the basis of tests and inspection. entire liability arising out of such non conforming product shall be of licensee and BIS shall not in any way be responsible in such cases. Such material shall in no circumstances be stored together with that conforming to the specification. and if there is adequate evidence that the goods have not been misused.0 REJECTIONS – A separate record shall be maintained giving information relating to the rejection of the production not conforming to the requirements of the specification and the method of its disposal. or the testing equipment goes out of order.0 SAMPLES – The licensee shall supply. 7.0 REPLACEMENT – Whenever a complaint is received soon after the goods with Standard Marks have been purchased and used. 1988. at any time. marked and exported by him and the trade value thereof at the end of each operative year of the licence.3 In respect of all other clauses of the specification the factory will maintain appropriate control and checks to ensure that their product conforms to the various requirements of this specification. the samples required in accordance with the Bureau of Indian Standards (Certification) Regulations. 9. as subsequently amended. defective goods or their components are replaced or repaired free of cost by the licensee in case the complaint is proved to be genuine and the warranty period (where applicable) has not expired. 9. Table 1……… DOC:STI/14697/3 . The complaint will be entertained only if seal provided by the manufacturer is intact. The final authority to judge the conformity of the product to the Indian Standard shall be with the Bureau. there is some difficulty in maintaining the conformity of their product to the specification. free of charge. or claim being filed by the consumers against BIS Standard Mark and not “conforming to” the relevant Indian Standard. 6. The marking may then be resumed only after permission by the Bureau. 8.1 In the event of any damages caused by the goods bearing the Standard Mark. 6.December 2004 4. The information regarding resumption of markings shall also be sent to the Bureau.0 STOP MARKING – The marking of the product shall be stopped under intimation to the Bureau if. 10. The Bureau shall pay for the samples taken by it from the open market. a statement of quantity produced. 5 PRODUCTION DATA – The licensee shall send to BIS as per the enclosed proforma-1 to be authenticated by a Chartered Accountant or by the manufacturer by giving an affidavit/undertaking. 10. The marking may be resumed as soon as the defects are removed under intimation to Bureau.For the purpose of this scheme the meters of the same design/class index manufactured in a day shall constitute a control unit. One Every control unit -do- -do- Every consignment In case of failure.7 Insulation Test & 9.3.7.11 12. 6.1.10 -do- 6.1.7.6 Immunity to earth fault/phase fault 6.6. be rejected. material received Once in a year for In case of failure of any each class of meters meter.4. 12. .1.1 6.7.4 9.1 -doIS 14697 -do- One LEVELS OF CONTROL ConFreRemarks trol quency Unit Each meter In case of failure of any meter.2 Table 18.3. such of insulating lot of consignment shall material received.6.6 IS 14697 One 6.December 2004 IS 14697:1999 As Static Transformer operated Watthour & VAR-hour Meters.1.2 6.7 Ac High Voltage & 9.6. & 12.11 Output Device 12. 7.1 IS 14697 Table 2 5 6.2 No. 6.6 TEST DETAILS Requirement General and constructional requirement Marking Test Methods Clause Reference 6.1. test certificate from manufacturer may also be accepted.5 7. TABLE 1 LEVELS OF CONTROL (Para 6 of the Scheme of Testing and Inspection) Cl.4 -do- One 6.1) 6.1 Table 17.7 6. cause of failure shall be identified and corrective action shall be -dotaken to remove the nonconformity. Alternatively.8 Resistance to Heat & Fire 6.5 7.2 IS 14697 6. of samples -do- Clearnces & Creepage distances (except impulse voltage test) Insulating Encased meter Terminal blocks 6. Every consignment In case of failure.10 Display of measured values 6.4. such of insulating lot of consignment shall be rejected.5 IS 14697 & IS 11000: (Pt. IS 14679 6.1 to 6.2.1 12. -doEach meter produced.4 IS 12063 One 9. cause of failure produced shall be identified and corrective action shall be taken to remove the nonconformity. 7.5 Test 12.6 6.7 .6.9 Protection against penetration of dust & water 6.7 -do- 5 6.6.2/Sec. 12. 11 Ambient temp.9.1 Limits of Error 12.1 IS 14697 Table 11 & 12 12. 12.3.7.1 9.1 9. IS 14797 12.5 10.7 Repeatability of error test 11.8. Otherwise the control unit shall be rejected.12 & 21 9.4 6.1.4 -dotable 11. 12.1 9.1.2. -do- -do- 3 Every 25th control unit -do- 3 -do- -do- In the case of failure of any sample. IS 14697:1999 As Static Transformer operated Watthour & VAR-hour Meters. 3 -do- -do- 3 -do- -do-do- 3 3 -doOnce in a year for each class of meter produced. -do- 3 Once in 6 months for each class of meters produced.12.7.13 Test of starting condition Test of no-load condition Test of influence quantities 12.7.1 & 12. Table 6 9.6 11. 12. ConFreRemarks of trol quency Clause Reference samples Unit 11.2 12. 12. influence 12.1.7 12.16 Each meter produced Three Three Once in a year for each class of meters produced. After corrective actions two consecutive control units shall be tested as per the samples indicated in the table and then original frequency shall be restored.4 10.2. -do12.2.2 & 12.11 & table 14 12.1 10.5 & -doTable 15 12.DOC:STI/14697/3 December 2004 Cl.6.3.13.2 11.8.7.1.5 11.3.2 Power consumption Power consumption in voltage circuit Power consumption in current circuit Influence of supply voltage 9.10 12.15 Interpretation of test results 9.7.12.3 Influence of self heating Influence of heating Immunity to Electromagnetic disturbance Radio interference suppression Meter constant 9.14 & Table 11 11.1.2. Otherwise the control unit shall be rejected. In the case of failure of any sample.1.2 & 12.7.3.7.2. Table 9 9.11.7. -do9. .20 11.10 & Table 13.4.6 -doTable 7 9. double the number of sample shall be taken for testing and no failure in those samples shall be permitted.12 & -do11.1 & 12.8 10.1. TABLE 1 LEVELS OF CONTROL (Para 6 of the Scheme of Testing and Inspection) TEST DETAILS LEVELS OF CONTROL Requirement Test Methods No.1. Once in six months for each class of meters produced. 12.1 –do12.1.7.12 12.2 Table 8 9.4 Table 10 9.7. -do- 3 Every 25th control unit Three 3 In case of failure of any meter.1. After corrective actions two consecutive control units shall be tested as per the samples indicated in the table and then original frequency shall be restored.2. cause of failure shall be identified and corrective action shall be taken to remove the nonconformity. double the number of sample shall be taken for testing and no failure in those samples shall be permitted.3 Short time over current test 9. 12. 6.7.7/Sec.6.2 No.6.3.3. TABLE 1 LEVELS OF CONTROL (Para 6 of the Scheme of Testing and Inspection) Cl. number of sample shall be taken for testing and no failure in those -dosamples shall be permitted. 12.1 Shock test 12.3 Spring hammer test 12.3.2 IS 14697 & IS 9000 (Pt.6.7.7.7.7.4 12. samples indicated in the Once a year for each table and then original shall be class of meters frequency restored.3.1. TEST DETAILS Requirement 12.6.6 Test for climatic influences 12. 2 Impulse Voltage Test Test Methods Clause 12.1 to 5) 12.12 IS 14697 & IEC 600682-75 12. of samples 3 3 3 3 3 LEVELS OF CONTROL ConFreRemarks trol quency Unit Once a year for each In the case of failure of class of meter any sample.8) 11. double the produced. produced -do- .6 Reference IS 14697 & IS 9000 (Pt. Otherwise the control unit shall be rejected. After Once in 6 months corrective actions two for each class of consecutive control units shall be tested as per the meter produced.1 & -do12.3.6.2 Vibration Test 12.1 to IS 14697 12.DOC:STI/14697/3 December 2004 IS 14697:1999 As Static Transformer operated Watthour & VAR-hour Meters.