GUIDE Design and assembly according to IEC 61439 / EN 61439 ENYSTAR Distribution Boards up to 250 A and Mi Power Distribution Boards up to 630 A Basics 4-6 Mi Power Distribution Boards IEC 61439 / EN 61439 7 Step 1: Collecting all the project data Interface characteristics of assemblies 8 Checklist to design switchgear assemblies according to IEC 61439 / EN 61439 9 Interface: Installation and ambient conditions 10 Interface: Operation and maintenance 11 Interface: Connection to the public power supply system 12 Interface: Electrical circuits and consumers 13 Step 2: Design of an assembly and design verifi cation Example:
Checklist to design switchgear assemblies according to IEC 61439 / EN 61439 14 Project design using the data from the checklist 15 HENSEL Planning tools at a glance 16-17 Verifi cations supplied by the system manufacturer 18 Verifi cations to be created by the panel builder 19 Determining the rated short-time withstand current (I cw ) of a circuit of an assembly 20-21 Feed:
Determining the rated current (I nA ) of an assembly 22 Rated current of an outgoing circuit (I nC ) 23 Determining the operating current (I B ) 24 Calculation of the power dissipation (P V ) 25 Determining the rated diversity factor (RDF) 26 Design verifi cation of permissible temperature rise according to IEC 61439-1 / EN 61439-1 Section 10.10 27 ENYGUIDE Online tool 28-29 Step 3: Assembly / manufacture of the distribution board Assembly instructions for distribution board systems 30-31 Routine verifi cation / inspection (routine test report) 32-33 Step 4 Manufacturer's marking 34 Step 5 Declaration of EC conformity (check lists for the manufcturer of an assembly) 35 Documentation 36-37 3