Disclosure to Promote the Right To Information

Transcription

1 इ टरन ट म नक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live प0र 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS (1985): Fixed Polystyrene Film Dielectric Capacitors, Part 4: Type FCPS3 [LITD 5: Semiconductor and Other Electronic Components and Devices]! न $ एक न' भ रत क +नमण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ च0र य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen

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4 UDC : [ ] IS:5475(Part 4)1985 Jndian Standard m 1 I SPECIFICATION FOR FIXED POLYSTYRENE FILM DIELECTRIC CAPACITORS PART 4 TYPE FCPS3 General This standard ( Part 4) shall be read in conjunction with IS: 5475 ( Part 1 ) 1978 Speci :ation for polystyrene film dielectric capacitors: Part 1 General requirements and methods of test first revision ). Scope This standard covers general purpose fixed polystyrene film dielectric capacitors, buried il type, tubular, axial lead, open type. Outline, Drawing and Dimensions The outline, drawing and dimensions shall be according / Fig. 1 and Table 1. OUTER FOIL ~=+J+kQ&_.._~D~ FIG. 1 OUTLINE, DRAWING AND DIMENSIONS Ratings The ratings shall be as specified in Table 1. Characteristics a) Selection tolerance 2, 5 and 10 percent b) Stability class 3 percent c) Temperature coefficient 150 ppm/ C f 50 ppm/ C d) Vibration IO500 Hz, 100 m/s%, 3 x 2 h e) Bump bumps, 100 m/s2 f) Climatic category 1 o/70/04 [ Category 3 of IS : 5475 ( Part 1 ) TABLE 1 DIMENSIONS AND RATINGS Capacitance 100 V DC 250 V DC 630 V DC Value in r h_~ rh ~ r h PF D L d D L D L d Max Max f 10% Max Max *($X3 Max Max (4) f:g (?O ( Z, :), :2 ;:; : :; :f :: 12 8:; :% :; 7 :; :7 8:; o5 3:; : :: :; : ;:; II f , Adopted 28 October 1985 April 1986, ISI I Gr 2 INDIAN STANDARDS INSTITUTION MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI

5 IS : 5475 ( Part 4 ) Marking See7of IS:5475 (Partl) Material Construction and Workmanship See 5 of IS : 5475 ( Part 1 ) Classification of Tests See 8.1 of IS : 5475 ( Part 1 )I Genera/ Conditions of Tests See 8.2 of IS : 5475 ( Part 1 )1978. The same measuring set shall be used for any one test but not necessarily for all the tests. 7.2 Schedule of Type Tests The test schedule and the requirements shall be in accordance with Table 2. TABLE 2 TEST SCHEDULE AND REQUIREMENTS SI No. Test (1) (2) Clause Ref in IS : 5475 ( Part 1 )I978 Condition of Test Requirements (3) (4) (5) I) Group 0 a) Visual examination b) Dimensions The condition. workmanship and the finish shall be satisfactory. Marking shall be legible The dimensions of the capacitors and their terminations shall be in accordance with Table 1 read with Fig. 1 c) Capacitance The capacitance value shall correspond with the rated capacitance value taking into account the tolerances d) Tangent of the loss angle Tan 6 shall not exceed at 1 MHz or 100 khz for values less than pf, and at 1 khz or IO khz for values pf e) Insulation resistance i) Between terminations: For C < 0.1 pf shall be greater than MSZ For C > shall be greater than MB ii) Between body and terminations together. The insulation resistance shall be greater than IO 000 M 5). f) Voltage proof g) Cuter foil marking Between terminations 2 5 times the There shall be no breakdown, spark rated voltage or flashover (dc) shall be applied Between 2.5 kv dc shall terminations shorted the body and be applied As specified in Part 1 II) Group 1 a) Solderability The terminations shall wet easily and the tinning shall be uniform and good b) Robustness of terminations ) Visual examination 2) Capacitance 3) Tangent of loss angle ) Insulation resistance There shall be no visible damage There shall be no visible damage ( Continued ) 2

6 IS : 5475 ( Part 4) 1985 TABLE 2 TEST SCHEDULE AND REQUIREMENTS Contd Test z. (1) (2) c) Bump 1) Visual examination 2) Capacitance 3) Tangent of loss angle 4) insulation resistance Clause Ref in IS : 5475 ( Part 1 )I978 (3) Bumps, 100 m/9. For 50 percent of the samples, the rated voltage shall be applied Condition of Test (4) Requirements (5) value shall not exceed &3 percent d) Vibration ) Visual examination 2) Capacitance 3) Tangent of loss angle ) Insulation resistance e) Rapid change of temperature IO500 Hz, 100 m/9, 6 h. For 50 percent of the samples, the rated voltage shall be applied value shall not exceed k3 percent 1) Visual examination. 2) Capacitance The change in capacitance from initial value shall not exceed percent the *3 3) Tangent of loss angle f) Climatic sequence Dry heat At maximum upper category temperature i) Insulation resistance (hot) Between terminations Ma for C > 0.1 pf and M Sz for C ( 0.1 yf between body and terminations M&J Min ii) Capacitance To be measured within two The change in capacitance value from the hours of removal from initial value shall not exceed f3 chamber percent Damp heat ( accelerated ) first cycle cycle Cold Final measurements i) Visual examination At minimum category temperature ii) Capacitance value shall not exceed A3 percent iii) Tangent of loss angle iv) Insulation resistance The tangent of loss angle shall not exceed Not less than 20 percent of the value in Group 0 III) Group 2 Damp heat ( long term ) a) Voltage proof test There shall be no breakdown spark or flash over ( Continued ) 3

7 IS:5475(Part4)1985 TABLE 2 TEST SCHEDULE AND REQUIREMENTS Contd SI No. (1) b) cl d) e) Test (2) Visual examination Capacitance Clause Ref in IS : 5475 ( Part 1 )I 978 (3) Condition of Test Tangent of loss angle (4) Requirements (5) value shall not exceed + 3 percent The tangent of loss angle shall not exceed Insulation resistance Not less than 20 percent of the value in Group 0 IV) Group 3 Endurance test hours a) Visual examination b) Capacitance Change in capacitance value shall not exceed fl percent c) Tangent of loss angle d) Insolation resistance w Group.4 Temperature coefficient and capacitance drift Temperature coefficient shall be within the limits of 150 ppm f 50 ppm/oc and AC shall be less than fl.5 percent 4 Printed at Swatantra Bharat Press, Delhi, India