AS/NZS 61439.3:2016
Low-voltage switchgear and controlgear assemblies - Part 3: Distribution boards intended to be operated by ordinary persons (DBO)
Defines the specific requirements for distribution boards intended to be operated by ordinary persons (DBO). DBOs have the following criteria: intended to be operated by ordinary persons (e.g. switching operations and replacing fuse-links); outgoing circuits contain protective devices, intended to be operated by ordinary persons; rated voltage to earth does not exceed 300 V a.c.; rated current (Inc) of the outgoing circuits does not exceed 125 A and the rated current (InA) of the DBO does not exceed 250 A; enclosed, stationary and for indoor or outdoor use. It is to be read in conjunction with AS/NZS 61439-1:2016. Adopted with national modifications from IEC 61439-3, Ed. 1.0 (2012).
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CONTENTS
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Interface characteristics
6 Information
7 Service conditions
8 Constructional requirements
9 Performance requirements
10 Design verification
11 Routine verification
Annexes
Annex AA (informative) Items subject to agreement between the ASSEMBLYmanufacturer and the user
Bibliography
Figure 101 – Example of temperature rise verification by test of a complete DBOas in 10.10.2.3.6
Table 101 – Values of assumed loading
Table 102 – Tightening torque values for the verification of mechanical strength
Table AA.1 – Items subject to agreement between the ASSEMBLY manufacturer and theuser
Previous versions
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CONTENTS
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Interface characteristics
6 Information
7 Service conditions
8 Constructional requirements
9 Performance requirements
10 Design verification
11 Routine verification
Annexes
Annex AA (informative) Items subject to agreement between the ASSEMBLYmanufacturer and the user
Bibliography
Figure 101 – Example of temperature rise verification by test of a complete DBOas in 10.10.2.3.6
Table 101 – Values of assumed loading
Table 102 – Tightening torque values for the verification of mechanical strength
Table AA.1 – Items subject to agreement between the ASSEMBLY manufacturer and theuser
Previous versions
AS/NZS 61439.3:2016
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.