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 (1986): Laminations for Transformers and Inductors for Use in Telecommunication and Electronic Equipment, Part 2: Preferred Ranges of Laminations, Section 6: Lamination Type YUI-1 [LITD 5: Semiconductor and Other Electronic Components and Devices]! न $ एक न' भ रत क +नम-ण 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 : 621 3WPi : : IS : ( Part -2/Set 6 ) Indian Standard SPECIFICATION FOR LAMINATIONS FOR TRANSFORMERS AND INDUCTORS FOR USE IN TELECOMMUNICATION AN-D ELECTRONIC EQUIPMENT PART 2 PREFERRED RANGES OF LAMINATIONS Section 6 Lamination Type YUI-1 1. Scope -This standard ( Part P/Set 6 ) covers dimensions and tolerances together with the effective parameters of laminations of type YUI Description - These are economy range of laminations, allowing scrap!ess punching and are used For large power transformers and chokes. These dimensions of side a of this range varies from 30 to 240 mm and the ratio of lamination area ( AB ) to window area ( Aw ) is 4 0 where: AIF =a(b+f)-aw Aw=ce 3. Dimensions and Effrctive Parameters - Dimensions and effective parameters are given in Table 1. EXP-LANATORY NOTE This standard is being issued in two parts : Part 1 covering general requirements and tests, and art 2 covering preferred~ranges of laminations. Part 2 has the following sections: Section 1 Lamination type YEI- Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Lamination type YEx-2 Lamination type YED-2 Lamination type YEx-3 Lemination type YEx-4 Lamination type YUI-1 Lamination type YM-1 This standard ( Part 2/Set 6) should be read in conjunction with IS : ( Part 1 )-1980 Specification for laminations for transformers and inductors for use in telecommunication and electronic equipment : Part 1 General requirements and tests. The effective parameters given in this standard ( Part P/Set 6 ) are based on a stacking factor CL If 0.95 and a stacking height equal to d. For calculation in the case of different stacking factors, see of IS : ( Part 1 ) In the~table of dimensions and parameters, the direction of rolling in the case of grain-oriented naterial-has been indicated by a double-arrow. This standard is based, without any technical change, on IEC Pub 740 ( 1982 ) Laminations for ransformers and inductors for use in telecommunication and electronic equipment, issued by the nternational Electrotechnical Commission ( IEC ). Adopted 30 October 1936 I Q April 1937, BIS I Gr 1 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI

5 TABLE 1 DllhENSlDNS AND TOLERANCES OF TYPE YUI-I ( Clause 3 ) 1 -+ t (SEE NOTE 21 d A 1 -c w 4-f* 4 b c All dimensions in millimetres. Designation Reference Letter and Tolerance Code [See Table 4 of IS : ( Part I)-1988* ] Effective Parameters f a lt 12 *G 12 &I2 d f,et 12 f 1; 12 Core Area A (st-2~) Magnetic pa*hi:ngth (mm) Core o:u,, (cm*) Core Constant YUI l : 1:: YUI I YUI YUI YUI l YUI I :: 75 1:: ,150 : l& x:s ::I :-:z YUI 1:70 YUI l E d 7 4d 3d Id Id Id /*e=2ib+2(a-d)=12d Note 1 -When larger sizes are required it is recommended thdt the iatios indicated in the iast line of the table are maintained [see 5.4 of IS : (Part I)-1986*]. Note 2 - Double arrow indicates dlrection of rolling. *Specification for laminations for transformers and induttors for use In telecommunication and electronic equipment: Part 1 Generai requirements and tests.