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1、JIS * 4 JAPANESE INDUSTRIAL STANDARD Translated and Published by Japanese Standards Association Direct acting indicating analogue electrical measuring instruments and their accessories Part 8 I Special requirements for accessories u .- * ICs 17.220.20 Descriptors : electrical measuring instruments R
2、eference number : JIS C 1102-8 : 1997 (E) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:39:57 MDTNo reproduction or networking permitted without license from IHS -,-,- I 4933608 056446
3、0 3T W C 1102-8 1997 (IEC 51-8 : 1984) Fowword This iranslation has been made based on the original Japanese Industrial Standard established by the Minister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee in accordance with the Industrial Standard
4、ization Law. By this establishment JIS C 1102 : 1981 was withdrawn and replaced with this Standard. Constitution of Standard JIS C 1102 consists of the following 9 parts under the common title Direct acting indicating analogue electrical measuring instruments and their accessories. Part 1 : Definiti
5、ons and general requirements common to all parts Part 2 : Special requirements for ammeters and voltmeters Part 3 : Special requirements for wattmeters and varmeters Part 4 : Special requirements for frequency meters Part 5 : Special requirements for phase meters, power factor meters and syn- Part 6
6、 : Special requirements for ohmmeters (impedance meters) and conduc- Part 7 : Special requirements for multi-function instruments Part 8 : Special requirements for accessories Part 9 : Recommended test methods Parts 2 to 9 are not complete in themselves and shall be read in conjunction with Part 1.
7、Parts 1 to 8 are arranged in the same format and a standard relationship between subject and clause number is maintained throughout. In addition, tables, figures and annexes add a s u e to the part number in order to differ- entiate the parts. This re-arrangement will assist the reader of this Stand
8、ard to distinguish information relating to the different types of instruments. chroscopes tance meters Date of Establishment: 1997-10-20 Date of Public Notice in Official Gazette: 1997-10-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Electricity JIS C 1102-8: 1997
9、, First English edition published in 2000-07 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event o f any doubts arising as to the contents, , the original JIS is to be the final authority. Q JSA2000 All rights reserved. Unless ot
10、herwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan c ? Y 250 A 250 A1okA - 10 1 5 5 1 5 2 1 5 - - - - - Subject to
11、 special agreement a2kV 2kV - 2 5 0.5 15 Subject to special agreement Note : When two series of tests are specified, they should both be carried out, in the order given. I s 2 k V 6.4.2.2 The full duration of each overload shall be applied except when an auto- matic cut-out (fuse) fitted to the acce
12、ssory has interrupted the circuit in less than the time specified in Table IV-8. The automatic cut-out shall be reset (or the fuse replaced) before the application of the next overload. - 2 9 0.5 60 - 2 1 5 - 6.4.2.3 After having been subjected to the overloads of short duration and after having coo
13、led to the reference temperature, an accessory shall comply with the re- quirements relating to its class index; however, the overloads shall not be repeated. 2kV 6.5 Limiting values of temperature See JIS C 1102-1. Subject to special agreement 6.6 Deviation from zero There are no requirements relat
14、irig to deviation from zero for accessories. Ail rated values - 2 2 - 9 0.5 60 1 5 - Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:39:57 MDTNo reproduction or networking permitted with
15、out license from IHS -,-,- 6. C 1102-8 : 1997 (IEC 51-8 : 1984) 7 Constructional requirements 7.1 Sealing to prevent access See JIS C 1102-1. 7.2 Scales There are no requirements relating to scales for accessories. 7.3 Preferred values 7.3.1 The value of the resistance of a shunt should be such as t
16、o develop one of the voltage drops given in Sub-clause 7 . 3 . 2 for one of the preferred instrument currents given in Sub-clause 7.3.1 of the relevant part. 7.3.2 “he voltage drop at the nominal current of a shunt should be one of the fol- lowing values: 50mV, 60 mV, 75 mV, 100 mV, 300 mV. 7.4 Adju
17、ster(s), mechanical and/or electrical There are no requirements relating to adjusters for accessories. 8 Information, general markings and symbols 8.1 Information See JIS C 1102-1. -8.1.1 A series resistor (impedance) shall be marked with its resistance (or imped- ance at a marked frequency) express
18、ed in ohms and/or with its nominal current. These values are treated as rated values and shall be stated as required by Item e) in Sub-clause 8.1 of JIS C 1102-1. 8.2 and 8 . 3 See JIS C 1102-1. 9 Markings and symbols for terminals See JIS C 1102-1. 10 Tests to prove compliance with this standard Se
19、e JI$ C 1102-1. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:39:57 MDTNo reproduction or networking permitted without license from IHS -,-,- E r r a t a for JIS (English edition) are
20、printed in Srundurdizution Journul, published monthly by the Japanese Standards Association, and also provided to subscribers of JIS (English edition) in Monthly Information. Errata will be provided upon request, please contact: Standardization Promotion Department, Japanese Standards Association 4-
21、1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN TEL. 03-3583-8002 FAX. 03-3583-0462 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 02:39:57 MDTNo reproduction or networking permitted without license from IHS -,-,-