ECA 454-1978 Fixed Paper and Film-Paper Dielectric Capacitors with Non-PCB Impregnants for Alternating Current Applications.pdf

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1、EIA 454 78 m 3234b00 0069222 O m ANSI/EIA RS-454-78 Approved June 16, 1878 EIA STANDARD FIXED PAPER AND FILM-PAPER PIELECTRIC I CAPACITORS WITH NON-PCB IMPREGNANTS FOR ALTERNATING CURRENT APPLICATIONS MAY 1978 ELECTRONIC INDUSTRIES ASSOCIATION EIA 454 78 M 3234b b223 2 c . ,- . Recommended standards

2、 are adopted by ELA without regard to whether or not their adoption may involve patents onarticles, materials, or processes. By such action, EIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the recommended standards. has not progre

3、ssed to the point where a valid comparison between the EIA Recommended Standard and the IEC Recom- mendation can be made. This EIA Recommended Standard is considered to have international standardization implications, but the IEC activity Published by f.LECTRONIC INDUSTRIES ASSQCIATION Engineering D

4、epartment , ZOOl Eye Street, N. W., Washington, D. C. 2006 (o Electronic IndUrrtrien Aaeooletion 1978 Wrghbresanred PRICE: $12.00 EIA 454 78 = 3234600 0069224 4 FIXED PAPER AND FILM-PAPER DIELECTRIC CAPACITORS WITH NON-PB IMPREGNANTS FOR ALTERNATING CURRENT APPLICATIONS Table of Contenta . SECTION P

5、AGE 1 1 1, Scope. 2. Definitions, 3. Stardard D-ignation 2,3,4 4. Applicable Documents . 5. StandardTestconditions 5 NOMINAL DIMENSION OVER SEAM COVER Inches Millimeters 54.8 x 33.4 68.3 x 39.7 2.16 x 1.31 2.69 x 1.56 2.91 x 1.91 3.66 x 1.97 4.56 x 2.84 73.8 x 48.4 92.9 x 50.3 11 5.8 x 72.3 2.16 1.3

6、1 54.8 x 33.4 Shape (1 - 1/4“) Flat Oval (1 - 1/2“) Flatval (1 - 3/49 Flat Oval (2“) Flat Oval Rectangui ar (1 - 1/4“) Formed Oval 3.3 Rating nuhhers are noted on parts lists sheets of appendix for capacitance and voltage rating. This is a three digit sequential nnn-significant number which has been

7、 assigned by EU. 3.4 Characteristic shall be identified by asiggle letter to denote the rated case temperature range of the capacitor as shown below: Characteristic Case Temperature Range D K L M -Soc to +7OoC -55OC to +85OC -55OC to +gooc -55OC td +6OoC 3.3 Finish shall be identified by a single le

8、tter as shown below: Letter N P Q _-, Type of Finish No finish subsequent to case fabrication Underwriters Laboratories Recognized Paint Underwrtm Laboratories Recognized -Platmg _=- ,- / - I *- E EIA 454 78 = 3234b00 00b9228 L RS454 Page 3 e 3.6, Terminals shall be identified by a single digit code

9、 as shown below: 2- Insulating cup 1/4” quick-connect - four tines 3-.- Insulating cup 1/4” quick-connect - two or three tines and forked solder lug NOTE: Outside foil where required shall be identified by a significant mark near the terminal connected to the outside foil of the capacitor winding. 3

10、.7 Capacitance tolerance shall be identified with a single letter as shown below: Code Letter Capacitance Tolerance H K ? 6% 3 10% Tolerance color code may be requested for certain applications but shall only apply to code letter H (%). Color tolerance dot shall be placed on the cover surface of the

11、 capacitor. The color code shall be as shown below: Capacitance Range Color Code From Nominal Black -6% to -3% White -3%tO O Y ellow o to+3% Red +3% to + 6% 3.8 Design optio-m are described in 3.8.1 through 3.8.6. 3.8.1 The protective device shall be identified by the letter “I”. 3.8.1.1 material wh

12、en used within the current and voltage fault rating of this device. 3.8.1.2 of the protective. device. Manufacturer should be consulted for minimum recommended clearance after installation (See 23.3 and 23.4). This protective device is intended to prevent case rupture and expulsion of internal A min

13、imum clearance above the capacitor terminals is required for effective operation O r _ 7 - - -1 I - EIA Y5Y 78 m 323YbOO OOb7227 3 m 3.8.2 performance characteristics. Internal current fuses shall be identified by the letter “F” and shall have the following 3.8.2.1 An internally fused capacitor shal

14、l be capable of operating continously at currents up to 125% of its nominal rated current at 60 HZ at a case temperature of 75OC. This is the “must hold” current. 3.8.2.2 seconds or less at a steady state current equal to 4.0 times the “must hold” current as defined in 3.8.2.1. 3.8.2.3 ac rated volt

15、age and discharged through zero resistance ten times with a minimum of thirty seconds delay between discharges without opening the fuse. 3.8.2.4 3.8.2.5 unmarked terminal). Dual section compressor capacitors (those in which two capacitors act in combination for one function and singly for another),

16、shall have the fuse connected to the com- mon bushing marked “C”. Dual section shared capacitors (those in which there are two capacitors and each is for a separate function), shall have the fuse connected to the unmarked terminal on the compressor section opposite to “C”. With the capacitor stabili

17、zed at 23OC, the fuse shall be capable of opening in five Fused capacitors shall be capable of being charged with direct current to 130% of the Mounting position of the capacitor shall not affect the operation of the fuse. Single section capacitors shall have the fuse connected to the inside foil te

18、rminal (the O 3.8.3 or less within one minute after disconnection of the capacitor from the voltage supply. Discharge resistor shall be identified by the letter “Et” and shall discharge the capacitor to 50 volts 3.8.4 3.8.5 Leakage current to case, Ground lug shall be identified by the letter “G”. (

19、See Appendix C for ground lug details.) 3.8.5.1 Low leakage current to case, required by UL1012 and UL1029, for some lighting and power supply applications shall be identified by the letter “K”. The leakage current value shall be determined by agreement between the supplier and the user. 3.8.5.2 Low

20、 leakage current to case for motor application.shd be identified by the option letter “L”. When 115 volts 60 Hz is applied between the shorted capacitor terminals and the bare case, the leakage current shall not exceed the following values: Nominal Capacitance Voltage Rating Max. Leakage micinampere

21、s 0-14pF 0-500 60 14.1-20pF 0-500 70 35.1 to 55pF 0-500 150 201to 35pF 0-500 100 O to 10pF 501-660 100 a 3.8.6 the option letter ?Y. The test described in Section 22 shall be identified by the letter “S”. Room temperature life test - where room temperature Life tests are required, they shall be iden

22、tified by EIA Y54 78 3234600 0069230 T 1 e O RS4a .Page 5 4, *APPLICABLE DOCUMENTS The latest revisions of the following standards when specified, form part of this document. (a) EL4 Standard RS-186, Standard Test Methods for Electronic Component Parts (b) (c) (d) EIA Source Code and Date Book NEMA

23、Standard Publication DC2-1970, Residential Controls (Quick-Connect Terminals) U. L. Standards UL1012 and UL1029 EIA publicationsmay be obtained from the Electronic Industries Association, 2001 Eye Street, N.W., Washington, D.C. 20006. NEMA publications may be obtained from the National Electrical Ma

24、nufacturers Association, 155 East 44th St., New York, NY 10017. U. L. Standards may be ohtained from Underwriters Laboratories, Inc., Publications Department 207 East Ohio Street, Chicago, IL 60611. 5. STANDARD TEST CONDITIONS Standard atmospheric conditions under which tests are to be conducted or

25、referred to shall be as shown below unless otherwise specified. Temperature : Barometric Pressure: 28 to 32 inches of mercury Relative Humidity: Less than 80% 2OoC to 35OC (referred to 23OC values) 6. QUALITY ASSURANCE 6.1 Recommended order of tests shall be as Shawn in Table 1. No sample shall be s

26、ubjected to more than one group of tests in Group 2, and Group 3 or Group 4. 6.2 Number of samples and allowable failureshill be as determined by agreement between the user and the supplier. 7. VISUAL AND MECHANICAL EXAMINATION 7.1 Dimensions shall be within the tolerances allowed. . . 7.2 Marking s

27、hall be legible, complete and correct. 7.3 Physical appearance shall be uniform in quality and capacitors shall be free from pics, corrosion, cracks, rough edges and other defects that will affect life, serviceability or appearance. EIA 454 78 3234600 0069233 3 R w45p I. 6. TABLE 1 QUALITY ASSURANCE

28、 TEST PROGRAMS GROUP 1 (100% of Sample) f6echanical Inspection :. Section 7 Marking . Section B Dielectric Withstanding Voltage Section 9 Capacitance . :. . Section 10 . Dissipation Factor i Section 11 Seal,. . Section 12 Leakage Current to Case (where required) . Section 19 GROUP 2 (25% of Sample)

29、Vibration Section 13 Salt Spray (Forplated or painted cases) Section 14 GROUP 3 (25% of Sample) Solderability (where required) .-. . Section 16 Terminal Strength, . Section 17 Humidity (For plated or painted cases) Section 15 Test of Protective Device or Current Fuse (where required) . Section 18 GR

30、OUP 4 (50% of Sample) Low Temperature Capacitance Change. Section 20 High Temperature Capacitance Change. Section 20 Room Temperature Life Test (where required) . Section 22 High Temperature Life Test. . Section 21 8. MARKING Marking shall be permanent ink or metal stamping and shall consist of the

31、following items: Nominal capacitance in microfarads (pF) Rated voltage in volts (RMS) Rated frequency in HZ Name or symbol of manufacturer Manufacturers. part number EIA date code identification Maximum temperature rating OC (where required) Underwriters Laboratories paint identificatian (where requ

32、ired) Underwriters Laboratories protective device or current fuse identification (where required) Outside foil terminal (where required) Terminal identification (where required) (Herrn-C-Fan and dual capacitors) Non-PCB identification , EIA 45V 78 = 3234b00 0069232 3 9. DIELECTRIC WITHSTANDING VOLTA

33、GE TESTS 9.1 Between terminals - Capacitors shall be capable of withstanding the application of 2 x rated ac voltage for one minute. Capacitors shall be discharged through a 10,000 ohm resistor to limit the current. 9.2 Terminals to case - Capacitors shall be capable of withstanding the application

34、of 2 x rated ac voltage plus 1000 volts for one minute. 9.3 Alternate tests to those outlined in 9.1 and 9.2 may be conducted at a dc voltage equal to the peak . voltage of the specifid ac test voltage. RS454 Page 7 10. CAPACITANCE TEST Capacitance measurements shall be made on an ac bridge with 60

35、Hz rated voltage applied or shall be referred to such a measurement. Values of capacitance measured shall be within the specified tolerance at or referred to a temperature of 23OC. Accuracy of measurement shall be 20.5%. 11. DISSIPATION FACTOR TEST Dissipation factor of each capacitor shall not exce

36、ed 0.6% for paper and 0.3% for film-paper dielectric when measured with 60 Hz rated voltage applied at any temperature between 23OC and 90C. The average D.F. at 65OC shall not exceed the average D.F. at 23OC. 12. SEALTEST e c 12.1 Capacitors shall be capable of withstanding a temperature of 90C in c

37、irculating air for a 10 minute period past the time the entire capacitor has reached a temperature of 85OC without evidence of leakage of the im- pregnant, 12.2 Capacitors shall be capable of withstanding two thermal cycles each consisting of % hours at -55OC followed by 24 hours at room temperature

38、 without evidence of leakage of the impregnant. 13. VIBRATION TEST L. .;I 13.1 Capacitors shall be capable of withstanding vibration of EU Standard RS-186, Method 7, Type III test except for thirty minut therefore, complete information pertaining to their magnitude, duration and frequency should be

39、suppled to the manufacturer for his recommendation as to the proper capacitor for the particular application. 23.1.5 Mounting Position Capacitors shall be capiible of being mounted in any position under any of the rated conditions, electrical and environmental, Arrangement - For group mounting of ca

40、pacitors, provisions shall be made for the circulation of air, and ample clearances shall be maintained between life parts. Ample clearance between capacitors and adjacent surfaces shall be such that the case temperature rating of the capacitors will not be exceeded. 1 -. EIA 454 78 M 3234600 O06923

41、6 O M RS43 Page 11 . 23.1.6 Surge Voltages Capacitors shall be capable of withstanding occasional peak transient surge voltages up to 315% of the rated nominal of 60 Ha RMS voltage. 23.1.7 Outside Foil Terminal When identified, this terminal should be connected to the lower potential side of the cir

42、cuit to minimize leakage currents to ground, 23.2 Case temperature shall be measured by placing capacitor in its-.nonnal operating environment under maximum conditions of ambient temperature and applied voltage. Thermocouples shall be attached to the center of the terminal cover and near the center

43、of the largest case surface opposite to mounting surfaces and away from brackets which may act as a heat sink. Measurements shall be taken with minimum normal air flow for the application. The maximum reading obtained from either thermocouple described 23.4 PROPER FUNCTIONING OF THE PROTECTIVE DEVIC

44、E DEPENDS UPON MOVEMENT OF THE TERMINALS OUTWARD FROM THE CASE: MINIMUM CLEARANCE ABOHE THE CAPACITOR STRICTED BY RIGID CONNETIONS OR BARRIERS OF ANY TYPE. APACITORiMANUFACTURERS SHOULD BE CONSULTED FOR MINIMUM CLEARANCE AND OTHER DETAILS OF INSTALLATION: OETION “P”, IS RECOMMENDED TO MINIMIZE FIRE

45、HAZARD PRESENT FOR END-OF-LIFE TERMINALS MUST BE PROVIDED IN THE INSTALLGTION. THE TERMINALS MUST NOT BE RE- NOTE: SOME CAPACITOR FAILURE MODES CAUSE THE CAPACITOR CONTAINER TO SWELL. THE SWELLING CAN CAUSE THE TERMINALS TO MOVE OUTWARD FROM THEIR ORIGINAL POSITION. IN THE INTEREST OF MAINTAINING SA

46、PE ELECTRICAL CLEARANCES BETWEEN LJVE Ml3TAL PARTS AND A SURROUNDING METAL STRUCTURE, IT IS RECOMMENDED THAT THE FOLLOWING POSSIBLE EXPANSIONS BE TAKEN INTO ACCOUNT WHEN LOCATING THE CAPACITOR ADJACENT TO UNINSULATED METAL PARTS: CASE. TYPE POSSIBLE EXPANSION A, J 3/8” 1/2” EIA 454 78 m 3234b00 00b2

47、37 2 m RS454 Page 12 d - Lu Q a 3 9 2 d O u. O APPENDIX A-1 PERCENT RATED LIFE: VS. PERCENT RATED VOLTAGE WITH CONSTANT CASE TEMPERATURE (For Paper Dielectric Capacitors) PERCENT OF RATED LIFE NOTE: Graph shown above is intended to be used for capacitors with all paper dielectric. The graph may be u

48、sed with lesser accuracy for film-paper dielectric capacitors. Contact manufacturer of capacitor for further recommendations. Q - EIA 454 78 m 3234b00 0069238 4 m RS454 Page 13. APPENDIX A - 2 PERCENT RATED LIFE VS. RATED CASE TEMPERATURE DEVIATIONS WITH CONSTANT VOLTAGE (For Paper Dielectric Capaci

49、tors) PERCENT OF RATED LIFE NOTE: Graph shown above is intended to be used for capacitors with all paper dielectric. The graph may be used with lesser accuracy for film-paper dielectric capcitors. Contact manufaciurer of capacitor for further recommendations. EIA 454 78 W 3234600 00b239 b * RS-454 Page 14 Q %- . APPENDIX A - 3 PERCENT RATED VOLTAGE VS. CASE TEMPERATURE FOR CONSTANT LIFE (For Paper Dielectric Capacitors) CASE TEMPERATURE (OC) , NOTE: Graph shown above