1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C78.261-1977 (R2007)Specification for tubularincandescent infraredlampss ANSI C78.26 1-1 977 Revision of C78.261-1964 (R1969) American National Standard specification for tubular incandescent infrared lamps Approved October
2、13, 1976 Secretariat: Electrical and Electronics Standards Management Board I Page 1 of 2 pages 1. Scope 4. Base Alignment This standard covers specifications for tubular incan- descent infrared lamps. The two bases of an assembled lamp shall be so aligned with respect to each other that the lamp wi
3、ll enter, with- out binding, the two slots of the gage shown in Fig. 2. 2. Lamp Types The types of lamps are given in Table 1. 5. Seal Temperature In the lamps covered by this standard, the metal-to- glass seal at each end of the lamp is intended for op eration at temperatures not exceeding 350C. AU
4、 equipment in which these lamps are to be used should, therefore, be designed so as to maintain the seal tempera- ture below this limit. The temperature measurement should be made with the thermocouple junction located over the central part of the metal-foil seal and in direct contact with the quart
5、z. 3. Outline and Dimensions The outline drawing and the dimensions of the lamps are given in Fig. 1. h Table 1 Lamp Types Bulb Lighted Length Watts Volts Size Finish Base * Inches Millimeters 375 120 T- 3 Translucent Metal sleeve 5 127.0 500 120 T-3 Translucent Metal sleeve 5 127.0 1000 240 T- 3 Tr
6、anslucent Metal sleeve 10 254.0 1600 240 T-3 Translucent Metai sleeve 16 406.4 2500 480 T-3 Translucent Metai sleeve 25 635.0 3800 570 T-3 Translucent Metal sleeve 38 965.2 *With flexible leads approximately 6 inches (152.4 mm) long. (Electrical connections are to be made only to these flexible lead
7、s and not to the metal sleeve.) CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Insti- tute require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of
8、 publication. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Printed in USA Copyright 01977 by American National Standards Institute, 1430 Broadway, New York, N.Y. 10018 ANSISC477/150 Page 2
9、of 2 pages Dimension A (375 watts) A (500 watts) A (1000 watts) A (1600 watts) A (2500 watts) A (3800 watts) B (see Note) C D Min 8.562 8.562 13.562 19.562 28.562 41.562 0.345 0.580 0.490 inches Nom Max - 8.812 8.812 13.812 19.812 28.812 41.812 0.315 0.425 0.750 0.687 Millimeters Min Nom Max 217.47
10、223.82 217.41 223.82 344.47 350.82 496.81 503.22 725.41 131.82 1055.67 1062.02 8.76 9.52 10.79 14.73 19.05 12.45 17.45 NOTE: Bulb diameter limits do not take into account any bow of the bulb. Fig. 1 Lamp Dimensions I MAXIMUM OVERALL LENGTH (SEE NOTE) NOTE: Dimension A max as shown in Fig. 1. Dimensi
11、on Inches Millimeters A 0.187 4.75 B 0.687 17.45 C 0.681 17.45 Fig. 2 Dimensions of Base Alignment Gage C78.261-1977 NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION 1300 NORTH 17TH STREET, SUITE 900 ROSSLYN. VA 22209www.NEMA.orgTO ORDER ADDITIONAL NEMA STANDARDS VISITWWW.GLOBAL.IHS.COM OR CALL 1-800-854-7179/1-303-397-79565612_0514TB
