JIS-C-2351-1988-ENG.pdf
JIS . C*2351 88 I 4933608 00283b3 2 I UDC 621.31 5.61 7.2/.3 : 621.31 5.22 JAPANESE INDUSTRIAL STANDARD Varnishes for Enameled Wires Translated and Published Japanese Standards Association 7 - Printed in Japan 7s COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services J I S C*2351 B B 4733b08 0028364 4 In the event of any doubt arising, the original Standard in Japanese is to be final authority. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services I - UDC 621.315.617.2/.3:62 1.315.22 JAPANESE INDUSTRIAL STANDARD Varnishes for Enameled Wires J I S C 2351-1988 1. Scope This Japanese Industrial Standard specifies varnishes for enameled wires to be used for manufacture of enameled wires, hereinafter referred to as the “varnishes1'. Remark: The units and numerical values shown in in this Standard are based on the traditional unit system, and are currently the criterion in force. 2. Classes and Symbols The classes and symbols shall be as given in Table 1. Table 1 Class Composition of film after baking I Symbol I -Varnish for oil enameled wire I W 41 I Resin and dry oils Varnish for polyurethane enameled wire I W 143 1 Polyurethane W 142 Polyvinyl formal Varnish for polyvinyl formal enameled wire 1 W 141 1 Polyester of terephthalic acid Varnish for polyester enameled wire 1 W 144 I Polyester-imid Varnish for polyester-imid enameled wire I I Applicable Standards and Reference Standards: See page 9. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 2 C 2351-1988 3. Characteristics The characteristics shall comply with Table 2, when tested in accordance with the test method of 7. Table 2 Applicable clause for test method sub- Class Varnish for Varnish for Varnish for Varnish for Varnish for oil enameled polyurethane polyvinyl polyester polyester- wire enameled formal enameled imid wire wire wire enameled wire enameled 7.1 Appearance Viscosity No turbidity or mixing of impureties Pa sP Reference value is subjected to agreement between parties concerned. (30“c) Tolerances 2 30 % 7.2 Non- volatile matter Tolerances i 2.0 Dilution ability % Reference value is subjected to agreement between parties concerned. To be easily diluted 7.3 e 7.4 I Diameter of con- ductor mm 0.2 1 . o I I Film thickness . Class 2 Class 1 7.5 Appearance I The surface shall be smooth and have uniform luster and colour. 7.6 7.7 Pinhole (number) 8 max. 8 max. 3 max. Flexibility Adhesion No cracks through which conductor is visible. No cracks through which conductor is visible. 7.8 7 . 9 7.10 Resistance to Mean value 8.28 8451 min. abrasion N gfl Minimum value 7.00 í7151 min. Dielectrjc break- I 1600 min. I 1600 min, I down voltage v 3400 min, 7.11 7.12 140 min. I Resistance to softening “C 170 min. I 240 min. I 300 min. I No cracks Resistance to heat through which shock conductor is visible. NQ cracks through which conductor is visible. 7.13 To be uni- formly metted Solderability by solder, and no refuse 7.14 COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 4 C 2351-1988 Table 4 Test item Places to which rounded off Viscosity Two sgnificant places Nonvolatile matter First decimal place 7. Test Procedures 7.1 Appearance Test 7.1.1 Method The method shall be as specified in 6.2 (1) of JIS 2103, provided that a colourless transparent container of inside diameter 10 to 40 mm is used. 7.1.2 Report The report shall be as specified in 6.3 (1) of JIS C 2103. 7.2 Viscosity Test The viscosity test shall be as specified in 8, of JIS C 2103. However, the temperature at measurement shall be 30 t 0.5OC. 7.3 Nonvolatile Matter Test 7.3.1 Equipment and Apparatus The equipment and apparatus shall be as specified in 9.1 of JIS C 2103. However, if the weighing is made within a short period, a flat bottom dish without cover may be used instead of that with cover. 7.3.2 However, the drying temperature and the drying period shall be as ,specified in Table 5. Method The method shall be as specified in 9.2 of JIS C 2103. Table 5 Class Drying temperature Drying period “C Ih Varnish for oil enameled wire 120 +- 3 3 Varnish for polyurethane enameled. wire Varnish for polyvinyl formal enameled wire 170 f . 3 I i 2 Varnish for polyester enameled wire Varnish for polyester-imid enameled wire 200 2 3 COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 5 C 2351-1988 7.3.3 Calculation The calculation shall be as specified in 9.3 of JIS C 2103. 7.3,4 Report The report shall be as specified in 9.4 of JIS C 2103. 7.4 Dilution Test The dilution ability shall be as specified in 12. of JIS C 2103. K 2437 and the similar ones and 5 degree xylene of JIS K 2435, and the mixture ratio shall be as specified in Table 6, However the thinner shall be as mixture of rn-cresylic acid specified in JIS Table 6 Mixture ratio (mass %) m-cresilic acid etc. 5-degree xylene Class Varnish for oil enameled wire Varnish for polyurethane enameled wire Varnish for polyvinyl formal enameìed wire 50 1 Varnish for polyester enameled wire Varnish for polyester-imid enameled wire 70 50 30 7.5 Method for Measuring Thickness of Coated Film of Test Piece The method for measuring thickness of coated film of test piece shall be as specified in 5. of JIS C 3003. 7.6 Appearance of Baked Film The smoothness and gloss of the surface and the colour of the coated film shall be examined visually. 7.7 Pinhole Test The pinhole test shall be as specified in 6. of JIS C 3003. If the number of pinholes does not comply with the specified value, the retest may be carried out on further two test pieces. 7.8 3003. specified in Table 7. Flexibility test However, the diameter of winding mandrel and the elongation shall be as The flexibility test shall be as specified in 8.1 of JIS C COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services j JIS C*Z35L 88 4933b138 0028370 T rS 6 C 2351-1988 Table 7 ctor diameter 1.0 mm 0.2 mm Elongation % Diameter of Class kition I winding mandrel I - Varnish for oil enameled wire 10 Varnish for polyurethane - Break enameled wire Varnish for polyvinyl formal enameled wire I I Varnish for polyester enameled wire Overall diameter Varnish for polyester-imid enameled wire 7.9 Adhesion Test The adhesion test shall be as specified in 9. of JIS C 3003. 7.10 Abrasion Test The abrasion test shall be as specified in 10. of JIS C 3003. If the mechanical failing load does not comply with the specification the retest may be carried out on further two sets of test pieces, two test pieces being one set. 7.11 Dielectric Breakdown Test The dielectric breakdown test shall be as specified in 11. (2) of JIS C 3003. 7.12 C 3003. Softening Test The softening test shall be as specified in 12. (2) of JIC 7.13 C 3003. temperature shall be as given in Table 8. Heat Shock Test The heat shock test shall be as specified in 13.1 of JIS However, the diameter of winding mandrel, elongation and heating COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services .7 C 2351-1988 Table 8 0.2 mm Class winding mandrel Elongation % I 130 5- 5 Varnish for polyvinyl formal enameled wire I lo I I I I- 4 times con- ductor diameter Varnish for polyester enameled wire Varnish for polyester-imid 200 f . 5 enameled wire I- 3 times con- ductor diameter I I I 7.14 The solerability shall be as specified in 16. of JIS C 3003. The temperature of solder shall be 380 2 5T, and the immersion duration shall be 2 sec. Solderability 8. Inspection 8.1 Classification of Inspection The inspection shall be classified into two kinds as given below: (1) Type Inspection The type inspection means an inspection carried for type approval, on the lot representing the varnish, to decide whether the characteristics of varnish at liquid state and after baking are good or not. The characteristics after baking are based on the values obtained from the test pieces manufactured by a furnace for test or trial production possessed by the manufacturer. (2) Acceptance Inspection The acceptance inspection is an inspection carried out at the time of acceptance of products to decide whether the products are good or not, 8.2 Inspection The inspection shall be carried out in accordance with the inspection items and the kinds of inspection specified in Table 9. shall be tested in accordance with 7., and those which comply with the requirements of 3, are accepted. subject to the agreement between the parties concerned with the acceptance. The products However, some parts of items may be omitted I - I ' - - - - COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services J I S CX2351 86 W 4933608 0028372 3 1 8 C 2351-1988 Table 9 Kind of inspection Inspection item Appearance Viscosity Nonvolatile matter Dilution ability Film thickiness Appearance Pinhole Flexibility Adhesion Resistance to abraslm Dielectric breakdown Resistance to softening Resistance to heat shock Solderability Acceptance inspection Type inspection O O O O O O O O O O O O O O O O o O Mark 0 shows the item to be tested. 9, Packaging In general, the container shall be the 18 1 tin can specified in JIS Z 1602, the 200 ¿ drum specified in JIS Z 1601, etc, and the container shall be packaged suitablly for transportation if necessary. 10. Designation of Product The product shal be designated by the class and nonvolatile matter or by the symbol and nonvolatile matter. However, the nonvolatile matter may be omitted. Example: Varnish for. polyester enameled wire 30 % or W 141-30 COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services i 9. C 2351-1988 11. Marking The following items shall be marked at an easily visible place of each container: (1) Class and nonvolatile matter, or symbol and nonvolatile matter (the nonvolatile matter may be omitted subject to agreement between parties concerned with acceptance) (2) Net mass (3) Manufacturer's name or abbreviation (4) Serial number or year and month of manufacture (or their abbrevation) Applicable Standards: JIS C 2103-Testing Methods of Varnishes for Electrical Insulation JIS C 3003-Methods of Test for Enamelled Copper and Enamelled Aluminium Wires JIS C 3 102-Annealed Copper Wires for Electrical Purposes JIS K 2435-Benzenes (Benzene Toluene Xylene SIS K 2437-Phenols (Phenol - Cresol and Cresylic Acid 8 Xylenols) Solvent-naphtha) JIS Z 1601-Steel Drums (for Liquid) JIS Z 1602-18 Liter Tin Cans JIS Z 8401-Rules for Rounding off of Numerical Values JIS Z 8703-Standard Atmospheric Conditions for Testing Reference Standards: JIS C 3201-Oleo-Resinous Enameled Copper Wires JIS C 3203-Polyvinyl Formal Enameled Copper Wires JIS C 3210-Polyester Enameled Copper Wires JI S C 32 1 1 -Polyurethane Enamelled Copper Wires JIS C 3214-Polyester-Imide Enameled Copper Wires COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services C 2351-1988 Edition 1 Japanese Text Established by Minister of International Trade and Industry Date of Establishment: 1966-12-01 Date of Revision: 1988-03-01 Date of Public Notice in Official Gazette: 1988-03-11 Investigated by: Japanese Industrial Standards Committee Divisional Council on Electricity This English translation is published by: Japanese Standards Association 1-24, Akasaka 4, Minato-ku, Tokyo 107 Japan O JSA, 1988 Printed i n Tokyo by Hohbunsha Co., Ltd. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services
