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 pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.