1、EIA 495-A 90 W 3234600 0071724 L . a I ln m d I w 5 ANSI/ EIA-495-A-i989 APPROVED: November 15, i989 EIA STANDARD Film Dielectric Capacitors With Metallized Paper Electrodes for Alternating Current Applications JANUARY 1990 ELECTRONIC INDUSTRIES ASSOCIATION ENGINEERING DEPARTMENT EIA 495-A 90 m 3234
2、600 0073725 3 m NOTICE EIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining
3、with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or nonmember of EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Stand
4、ards and Publications preclude their voluntary use by those other than EIA members, whether the standard is to be used either domestically or internationally. Recommended Standards and Publications are adopted by EIA without regard to whether or not their adoption may involve patents on articles, ma
5、terials, 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 Standard or Publication. This EIA Standard is considered to have International Standardization implication, but the Internation
6、al Electrotechnical Commission activity has not progressed to the point where a valid comparison between the EIA Standard and the IEC document can be made. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the respo
7、nsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From EIA Standards Proposal No. 2208 formulated under the cognizance of the P-2.2 Su bcommittee on Plastic and Paper Dielectric.)
8、COPYRIGHT 1990 Published by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Department 2001 Pennsylvania Ave., N.W. Washington, D.C. 20006 (Temporary Headquarters 1722 Eye St., N.W. Washington, D.C. 2006) PRICE: $15.00 All Rights Reserved Printed in U.S.A. EIA 495-A 90 m 3234600 0073726 5 m Paragraph
9、1.0 2.0 3.0 4.0 5.0 6.0 7.0 6.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 E IA-495-A FILM DIELECTRIC CAPACITORS WITH METALLIZED PAPER ELECTRODES FOR ALTERNATING CURRENT APPLICATIONS TABLE OF CONTENTS SCOPE DEFINITIONS STANDARD DESIGNATIONS APPLICABLE DOCUMENTS STANDAR
10、D TEST CONDITIONS QUALITY ASSURANCE VISUAL AND MECHANICAL INSPECTION MARKING DIELECTRIC WITHSTANDING VOLTAGE CAPACITANCE TEST DISSIPATION FACTOR SEAL TEST VIBRATION TEST SALT SPRAY TEST HUMIDITY SOLDERABILITY TERMINAL STRENGTH PROTECTIVE DEVICE LEAKAGE CURRENT TEST CAPACITANCE CHANGE WITH TEMPERATUR
11、E HIGH ROOM TEMPERATURE LIFE TEST ROOM TEMPERATURE LIFE TEST APPLICATION NOTES Paqes) 1 1 2 6 6 7 8 8 9 9 10 10 10 11 11 11 11 11 11 12 12 13 13 -i- EIA 495-A 90 m 3234b00 0071727 7 m . L EIA-495-A TABLE OF CONTENTS (continued) APPENDIX A EXPLANANTION OF RATING TABULATIONS APPENDIX B SUMMARY OF EIA
12、STANDARD DESIGNATION APPENDIX C BUSHING ASSEMBLIES APPENDIX D CASE TYPES INDEX 16 17 18, 19, 20 21,22,23, 24 25 - 26 -II- EIA 495-A 90 i3234b00 007L72B 9 i E IA- 49 5 -A Page 1 FILM DIELECTRIC CAPACITORS WITH METALLIZED PAPER ELECTRODES FOR ALTERNATING CURRENT APPLICATIONS 1.0 SCOPE This Standard de
13、scribes some of the requirements for film dielectric capacitors oil filled or impregnated, or both, made with two metallized paper electrode or one metallized paper electrodes and one aluminum foil electrode. The capacitors are sealed in metal cases. They are intended for use in lighting ballasts, f
14、erroresonant trarisformer power supplies. some power factor correction, with motors, and other general purpose applications. The capacitors are rated for service in 50 Hz to 60 Hz circuits with case temperature range shown in paragraph 3.4. 2.0 DEFINITIONS 2.1 Rated voltage is the design steady stat
15、e rms operating voltage that may be supplied between the terminals of the capacitor (see paragraph 23.2). a 2.2 Rated case temperature is the maximum allowable hot spot temperature developed at any point on the case surface during maximum operating condi tion (see paragraph 23.3). 2.3 Self-healing i
16、s the property of a capacitor to restore the dielectric to an acceptable condition after dielectric breakdown occurs. 2.4 Capacitor failure is any abnormal condition of operation as described below: (a) Continuous or intermittent open circuit .between capacitor terminals. (b) Continuous short circui
17、t between capacitor terminals or between terminals and case. (c) Dissipation factor in excess of requirements of paragraph 11.0. (d) Change of capacitance of more than 3% during service life. 2.5 Service life objective is described in paragraph 23.1. EIA-495-A Page 2 EIA 495-A 90 m 3234600 0073729 O
18、 m 3.0 STANDARD DESIGNATION 3.1 The EIA standard designation shall consist of seven parts as illustrated below with options indicated. A4OOXNZK PRGLS - -_ N K Capacitance -T Tolerance I Temperature Finish Characteristic X Rating Terminal Op tions Number P-Protective Device R-Resistor G-Ground Lug K
19、or L-Low Leakage S-Room Temp. Life Test 3.2 Case Types The case type shall be identified with a single letter. deep drawn or extruded construction with double rolled seams. All cases shall be of I Case Type A 6 C D N P S T W Nominal Dimensions Over Seam Cover for Oval and Rectangular Case Nominal Ou
20、tside Diameter for Cylindrical Case Inches Millimeters 2.16 x 1.31 54.9 x 33.3 2.69 x 1.56 68.3 x 39.5 2.91 x 1.91 73.9 x 48.5 3.66 x 1.97 93.0 x 50.0 1.63 41.4 1.75 44.5 2.00 50.8 2.50 63.5 3.00 76.2 Shape i 1/4“) Flat Oval (1 1/2“) Flat Oval (1 3/49 Flat Oval (2“) Flat Oval Cylindrical Cylindrical
21、 Cylindrical Qlindrical Cy1 indri cal EIA 495-A 90 m 3234600 0073730 7 m EIA-495-A Page 3 a 3.3 Rating numbers are noted on parts lists sheets of Appendix A for capacitance and voltage rating. This is a three digit sequential non-significant number which has been assigned by EIA. 3.4 Characteristic
22、shall be identified by a single letter to denote temperature range, dielectric and construction. Case Temp. Max. DF Cap. Change From 23OC Characteristic Range in % TO -4OOC To Max Temp. See See Q, s, x -4OOC to 70C Para 11 +3 to -5% +2 to -6% R, T, Y -4OOC to 9OoC Para 11 +3 to -5% +2 to -7% Capacit
23、ors in all characteristics are made with polypropylene dielectric but may have different electrodes and dissipation factor values. Characteristics Q and R are made with two metallized paper electrodes. Characteristics 5 and T are made with one metallized paper electrode, and one metal foil electrode
24、. Characteristics ,Y and Y are made with two metallized paper electrodes. 3.5 Finish shall be identified by a single letter as shown below: Code Letter Type of Finish N No finish subsequent to case fabrication P Q Underwriters Laboratories recognized paint, or equivalent Underwriters Laboratories re
25、cognized plating, or equivalent 3.6 Terminals shall be identified by a single digit code as shown below: Code 1 2 Insulating cup 1/4 inch (6.35 mm) quick-connect two tines Insulating cup (1/4 inch (6.35 mm) quick-connect four tines c EIA 495-A i0 3234600 0071731 9 R S-495 Page 4 3.6 (Continued) 3 In
26、sulating cup 1/4 inch (6.35 mm) quick-connect two or three tines and forked solder lug 4 Code 1 and Code 2 on same capacitor 5 Insulating cup 1/4 inch (6.35 mm quick-connect three tines 6 Code 1 and Code 5 on same capacitor 3.7 Capacitance Tolerance Capacitance tolerance shall be identified with a s
27、ingle letter as shown below: Code Capacitance Le ter Tolerance L -+ 3% - +6% - H 3.7.1 Color Coding Tolerance color code may be requested for certain applications, but shall only Color tolerance dot shall be placed on the cover surface of the capacitor. The color dot shall be as shown below: apply t
28、o code letter H (+60/0). Capacitance Range Color Code from Nominal Black -6% to -3% White -3% to o Yellow o to t3% Red +3% to +6% 3.8 Design options are described in paragraphs 3.8.1 through 3.8.5. 3.8.1 The protective device shall be identified by the letter “Pi. Capacitors containing the protectiv
29、e device shall be recognized by Underwriters Laboratories, or equivalen t. 3.8.2 3.8.3 3.8.4 f EIA 495-A 90 = 3234600 0073732 O m RS-495 Page 5 3.8.1.1 This protective device is intended to prevent case rupture and expulsion of internal material when used within the current and voltage fault rating
30、of this device. 3.8.1.2 A minimum clearance above the capacitor terminals is required for effective operation of the protective device. The manufacturer should be consulted for minimum recom- mended clearance after installation. See paragraph 23.11. D i sc har ge Re si s t or The discharge resistor
31、shall be identified by the letter “R“ and shall discharge the capacitor to 50 volts or less within one minute after disconnection of the capacitor from the voltage supply. Ground Lug The ground lug shall be identified by the letter “G“. See Appendix C for ground lug details. Leakage To Case 3.8.4.1
32、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. 3.8.4.2 Low leakage current to case for motor application sh
33、all 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 0- 14pF 14.1 - ZOPF 20.1 - 35 PF 35.1 - 55 PF O - 1OPF 3.8.5 Room Temperature Life Test
34、 AC Voltage Max. Leakage Rating Micro Ampere O - 500 O - 500 O - 500 O - 500 501 - 660 60 70 100 150 100 Where a room temperature life test is required, it shall be identified by the letter “Sir. The test is described in paragraph 22.0. EIA 495-A 90 m 3234600 0073733 2 m EIA-495-A Page 6 4.0 APPLICA
35、BLE DOCUMENTS The latest revisions of the following EIA Recommended Standard when specified form part of this document. (a) EIA-186E Standard Test Methods for Passive Electronic Component Parts General Instructions and Index of Tests (October, 1978) (b) EIA-476-A Source and Data Code (With numerical
36、 and alphabetical re- gistration lists) (january, 1982) (c) NEMA Standard Publication DC2-1970 “Residential Controls (Quick-Con- nec t Term inals) (d) UL Standard UL1012, Power Supplies, and UL1029, HID Lamp 6 all as ts (e) UL Standard for Capacitors UL810 EIA Recommended Standards and Publications
37、may be obtained from Electronic In- dustries Association, 2001 Eye Street, N.W., Washington, D.C. 20006, Tel. (202) 457 4966. NEMA Publications may be obtained froin National Electrical Manufacturers Association, 2101 L Street, Suite 300, Washington, D.C. 20037. UL Standards may be obtained from Und
38、erwriters Laboratories, Inc., Publications Department, 207 East Ohio Street, Chicago, IL. 606il. 5.0 STANDARD TEST CONDITIONS 5.1 Standard atrnospheric conditions under which the tests are conducted or referred to shall be as outlined below, unless otherwise specified. Temperatur e: i3arometric Pres
39、sure: 2ooc to 35oc (Referred to 23OC - + 2OC values) 28 to 32 inches (94 to 110 kPa) Relative Humidity: Less than 80%. 5.2 Standard test frequency is at 60 Hz. referred to 60 Hz. Measurements at other frequencies shall be _. EIA 495-A 90 = 3234b00 0073734 4 M EIA-495-A Page 7 6.0 QUALITY ASSURANCE 6
40、.1 The recommended order of tests shall be shown in Table 1 below. No Groups 2, sample shall be subjected to more than one group of tests in 3 and 4. 6.2 The number of samples and allowable failures shall be as determined by agreement between the user and the supplier. Group 1 TABLE 1 QUALiTY ASSURA
41、NCE TEST PROGRAMS (100% of Sample) Reauirements Mechanical Inspection . Paragraph 7.0 Marking Paragraph 8.0 Dielectric Withstanding Voltage Paragraph 9.0 Capacitance . Paragraph 10.0 D iss i pat ion Fact or . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42、 . Paragraph 11.0 Seal . Paragraph 12.0 Leakage Current to Case . Paragraph 19.0 Group 2 (10% of Sample) Vibration Paragraph 13.0 Sait Spray (For Plated or Painted Cases) . Paragraph 14.0 Group 3 (20% of Sample) Colderabili ty (where required) . Paragraph 16.0 Terminal Strength Paragraph 17.0 Humidi
43、ty Paragraph 15.0 Protective Device Test (where required) Paragraph 18.0 I Group 4 (70% of Sample) Low Temperature Capacitance Change . Paragraph 20.1 High Temperature Capacitance Change Paragraph 20.2 , Room Temperature Life Test (where required) Paragraph 22.0 High Temperature Life Test Paragraph
44、21.0 EIA 495-A 90 m 3234b00 0073735 b m EIA-495-A Page 8 7.0 VISUAL AND MECHANICAL INSPECTION 7.1 The dimensions shall be within the tolerances allowed. 7.2 The marking shall be legible, complete and correct. 7.3 The physical appearance shall be uniform in quality and the capacitors shall be free fr
45、om pits, corrosion, cracks, rough edges and other de- fects that will affect life, serviceability or appearance. 8.0 MARKING 8.1 The marking shall be permanent ink or metal stamping and shall con- sist of the following items: (1) Nominal capacitance in microfarads. (2) Rated voltage in volts (rms).
46、(3) Rated frequency in Hz. (4) Name or symbol of manufacturer. (5) Metallized or SH. (6) Manufacturers part number. (7) IA date code identification. (8) Temperature OC (where required). (9) Underwriters Laboratories or equivalent protective device iden- tification (where required). Underwriters Labo
47、ratorties or equivalent paint identification (where required). (10) (11) Non-PCB identification (No - PCB) (12) Terminai identification (where required) (Herm-C-Fan and dual capacitors). EIA 495-A 90 3234600 0071736 RS-495 Page 9 9.0 DIELECTRIC WITHSTANDING VOLTAGE 9.1 Between Terminals The capacito
48、rs shall be capable of withstanding the application of 1.75 x rated ac voltage for one second. The capacitors shall be discharged through a 10,000 ohm resistor to limit the current. 9.2 Terminals to Case The capacitors shall be capable of withstanding the application of 2 x rated ac voltage plus 1,0
49、00 volts for one second. 9.3 Alternative Tests The alternative tests to those outlined in paragraphs 9.1 and 9.2 may be conducted at a dc voltage equal to the peak voltage of the specified ac test voltage. Where the dc voltage is used the capacitors shall be charged and discharged through a 10,000 ohm resistor. 9.4 Defective Capacitors Capacitors shall be considered defective if they show evidence of continous or intermittent open circuit during or after the test of paragraph 9.1. Momentary short circuits are permitted as these capacitors are self-healing. 9.
