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BS EN IEC 60393-4:2023 – TC 2024

BS EN IEC 60393-4:2023 – TC 2024

$217.84

Tracked Changes. Potentiometers for use in electronic equipment – Sectional specification. Single-turn rotary power potentiometers

Published By Publication Date Number of Pages
BSI 2024 100
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IEC 60393-4:2023 is applicable to single-turn rotary power potentiometers wire-wound technology. Enamelled, cemented, moulded, enclosed. This specification is applicable to rotary potentiometers with nominal dissipation in excess of 10 W, the resistive element of which consists of a wire or a wound tape. All the potentiometers specified by this specification are slider-driven without reduction. Their stroke less than 360° is limited by stops. This document specifies preferred ratings and characteristics and selects from IEC 60393-1, appropriate quality assessment procedures, tests and measuring methods. It provides general performance requirements for this type of potentiometer. This document gives the minimum performance requirements and test severities. Annex A lists the letters and symbols used in the clauses of this document. This edition includes the following significant technical changes with respect to the previous edition: a) the document structure has been organized to follow new sectional specification structure decided in TC 40; b) the information on the assessment level EZ and FZ (zero nonconforming) has been revised.

PDF Catalog

PDF Pages PDF Title
65 undefined
68 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
69 English
CONTENTS
71 FOREWORD
73 1 Scope
2 Normative reference
74 3 Terms and definitions
Figures
Figure 1 – Schematic view
75 4 Preferred characteristics
4.1 General
4.2 Style and dimensions
Figure 2 – Outline drawing and dimensions
76 4.3 Preferred climatic categories
4.4 Resistance law
4.5 Nominal total resistance
4.6 Tolerances on nominal total resistance
4.7 Rated dissipation
Figure 3 – Rated dissipation curve
77 4.8 Limiting element voltage
4.9 Insulation voltage
4.10 Number of cycles of operation
4.11 Shaft rotational speed
5 Tests and test severities
5.1 General
Figure 4 – Rated dissipation curve (example of larger area)
78 5.2 Mounting
5.3 Tests
5.3.1 Drying
5.3.2 Resistance measurement
5.3.3 Vibration
5.3.4 Bump
5.3.5 Shock
79 5.3.6 Temperature coefficients and temperature characteristics of resistance
6 Performance requirements
6.1 General
6.2 Limits for change in resistance or output voltage ratio
6.3 Limits for insulation resistance
Tables
Table 1 – Limits for change in resistance or output voltage ratio
80 6.4 Limits of temperature rise
6.5 Limits for resistance law
6.6 Limits for operating torque
6.7 Limits for end stop torque
Table 2 – Limits for operating torque
Table 3 – Limits for end stop torque
81 6.8 Limits for residual resistances
6.9 Visual inspection
6.9.1 General visual criteria
6.9.2 Visual criteria after tests
6.10 Solderability
7 Marking, packaging, and ordering information
7.1 Marking of the component
82 7.2 Marking for packaging
7.3 Additional marking
7.4 Ordering information
8 Detail specifications
8.1 General
8.2 Information to be specified in a detail specification
8.2.1 Outline drawing or illustration
83 8.2.2 Dimensions
8.2.3 Mounting
8.2.4 Resistance law
8.3 Ratings and characteristics
8.3.1 General
8.3.2 Nominal total resistance range
8.3.3 Marking
8.3.4 Ordering information
84 8.3.5 Additional information
9 Quality assessment procedures
9.1 General
9.2 Definitions
9.2.1 Primary stage of manufacture
9.2.2 Structurally similar components
9.3 Assessment level EZ
10 Qualification approval
10.1 General
10.2 Qualification approval based on the fixed sample size procedure sampling
85 10.3 Tests
86 Table 4 – Test schedule for qualification approval
92 11 Quality conformance inspection
11.1 Formation of inspection lots
93 11.2 Test schedule
11.3 Assessment levels
Table 5 – Quality conformance inspection: Lot-by-lot inspection
94 Table 6 – Quality conformance inspection: Periodic testing
95 11.4 Delayed delivery
12 Apparatus for measuring mechanical accuracy
12.1 Dial indicator
12.2 Cylindrical shaft adaptor
12.3 Potentiometer mounting fixture
12.4 Potentiometer shaft holding fixture
96 Annex A (informative)Letter symbols and abbreviations
98 Bibliography

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BS EN IEC 60393-4:2023 - TC 2024
$217.84