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BS IEC 62873-3-3:2022

BS IEC 62873-3-3:2022

$102.76

Residual current operated circuit-breakers for household and similar use – Specific requirements for devices with screw-type terminals for external untreated aluminium conductors and with aluminium screw-type terminals for use with copper or with aluminium conductors

Published By Publication Date Number of Pages
BSI 2022 22
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PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
5 FOREWORD
7 INTRODUCTION
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Classification
5 Characteristics of devices
6 Marking and other product information
10 7 Standard conditions for operation in service and for installation
8 Requirements for construction and operation
Tables
Table 1 – Marking for terminals
Table 2 – Connectable cross-sections of aluminium conductors for screw-type terminals
11 9 Tests
9.1 General
Table 3 – List of tests according to the material of conductors and terminals
12 9.2 Test conditions
Table 4 – Connectable conductors and their theoretical diameters
Table 5 – Cross-sections (S) of aluminium test conductors corresponding to the rated currents
13 9.3 Current cycling test
9.3.1 General
9.3.2 Preparation
9.3.3 Test arrangement
Table 6 – Test conductor length
14 9.3.4 Temperature measurement
9.3.5 Test method and acceptance criteria
Table 7 – Equalizer and busbar dimensions
16 Table 8 – Test current as a function of rated current
Table 9 – Example of calculation for determining the average temperature deviation D
17 Table 10 – Connectable cross-sections of copper conductors for screw-type terminals
Table 11 – Test copper conductors corresponding to the rated currents
Table 12 – Screw thread diameters and applied torques
18 Figures
Figure 1 – General arrangement for the test
Figure 2 – Test specimen example 1
19 Figure 3 – Test specimen example 2
Figure 4 – Test specimen example 3
Figure 5 – Test specimen example 4
Figure 6 – Test specimen example 5
20 Bibliography

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BS IEC 62873-3-3:2022
$102.76