šŸ”„šŸ”„ Donā€™t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

šŸ”
BS EN IEC 60477-1:2022

BS EN IEC 60477-1:2022

$167.15

Laboratory resistors – Laboratory DC resistors

Published By Publication Date Number of Pages
BSI 2022 34
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. Weā€™re here to assist you 24/7.
Email:[email protected]

IEC 60477-1:2022 applies to resistors intended for use as laboratory DC resistors (hereinafter referred to as “resistors”) comprising standard resistors, single or multiple resistors of accuracy Classes 0,000 05 to 10 and single or multi-dial resistors of accuracy Classes 0,000 5 to 10. This document does not apply to: 1) resistors which are intended for use solely as permanently mounted circuit components, 2) resistors used on alternating current or on pulsed current, 3) active resistors, 4) series resistors and shunts which are considered as accessories of electrical measuring instruments in the relevant IEC document (examples of these are as follows). IEC 60477-1:2022 cancels and replaces the first edition of IEC 60477 published in 1974, and its Amendment 1:1997. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) extended the resistor accuracy classes; b) deleted the resistor accuracy class expression in parts per million (ppm); c) excluded the active resistor from the scope of this document; d) updated the terms and definitions according to new IEC 60050 series; e) changed the term “resistance decade” to “resistance dial” to cover the multi-dial resistors with other resistance step values; f) updated the intrinsic error to intrinsic uncertainty according to IEC 60359; g) added the limits of relative stability for resistors of classes 0,000 05 to 0,01; h) added the requirements of high voltage resistors; i) updated the safety symbols and requirements according to the new IEC 61010 series; j) updated the insulation resistance requirements of resistors; k) added the requirements of temperature coefficient; l) updated the temperature requirements for transport and storage of resistors.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
6 Blank Page
7 English
CONTENTS
9 FOREWORD
11 1 Scope
2 Normative references
3 Terms and definitions
12 3.1 General terms
14 3.2 Characteristic values
15 3.3 Accuracy class, class index
16 3.4 Influence quantities, reference conditions, nominal range of use
18 3.5 Uncertainty and variations
21 4 Classification and construction
4.1 Classification
4.2 Construction
5 Limits of intrinsic uncertainty
5.1 General
22 5.2 Requirement for multiple resistors
6 Reference conditions
Tables
Table 1 ā€“ Limits of intrinsic relative uncertainty and limits of relative stability
23 7 Permissible variations
7.1 Limits of variation
Table 2 ā€“ Reference conditions and permissible range of influence quantities
24 7.2 Conditions for the determination of the variations
7.3 Influence of self-heating (power dissipation)
Table 3 ā€“ Nominal range of use for influence quantities(applicable unless marked otherwise)
25 7.4 Influence of position
8 Further electrical and mechanical requirements
8.1 Electrical safety requirements
8.2 Insulation resistance
8.3 Storage and transport conditions
8.4 Terminal
26 8.5 Provision of temperature measuring facilities
8.6 Guarding and screening requirements
9 Information, markings and symbols
9.1 Information
27 9.2 Markings, symbols and their locations
9.3 Marking relating to the reference conditions and nominal ranges of use
28 Table 4 ā€“ Examples of markings for temperature
29 Table 5 ā€“ Symbols for marking resistors
30 Annex A (informative)Reference information
A.1 Thermoelectric effects (see Clause 6, Note 2)
A.2 Reference range and nominal range of use
Figures
Figure A.1 ā€“ Effect of temperature
31 A.3 Example of marking for a single resistor
A.4 Example of marking for a five-dial resistor
Figure A.2 ā€“ Example of marking for a single resistor
Figure A.3 ā€“ Example of marking for a five-dial resistor
32 Bibliography

Related products

BS EN IEC 60477-1:2022
$167.15