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eLibrary > BS IEC 62873-3-3:2022 - TC Tracked Changes. 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 te >

BS IEC 62873-3-3:2022 - TC Tracked Changes. 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 te, 2023

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BS IEC 62873-3-3:2022 - TC Tracked Changes. 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 te, 2023

30477951
A-30387697 [Go to Page]
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CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Characteristics of devices
6 Marking and other product information
7 Standard conditions for operation in service and for installation
8 Requirements for construction and operation
Tables [Go to Page]
Table 1 – Marking for terminals
Table 2 – Connectable cross-sections of aluminium conductors for screw-type terminals
9 Tests [Go to Page]
9.1 General
Table 3 – List of tests according to the material of conductors and terminals
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
9.3 Current cycling test [Go to Page]
9.3.1 General
9.3.2 Preparation
9.3.3 Test arrangement
Table 6 – Test conductor length [Go to Page]
9.3.4 Temperature measurement
9.3.5 Test method and acceptance criteria
Table 7 – Equalizer and busbar dimensions
Table 8 – Test current as a function of rated current
Table 9 – Example of calculation for determining the average temperature deviation D
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
Figures [Go to Page]
Figure 1 – General arrangement for the test
Figure 2 – Test specimen example 1
Figure 3 – Test specimen example 2
Figure 4 – Test specimen example 3
Figure 5 – Test specimen example 4
Figure 6 – Test specimen example 5
Bibliography [Go to Page]

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BS IEC 62873-3-3:2022 - TC Tracked Changes. 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 te, 2023

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