| IEC Standard | Description |
|---|---|
| IEC61439-0 | Guidance to specifying assemblies |
| IEC61439-1 | General rules |
| IEC61439-2 | Power Switchgear and Controlgear (PSC) |
| IEC61439-3 | Distribution boards intended to be operated by ordinary persons (DBO) |
| IEC61439-4 | Assemblies for construction sites (ACS) |
| IEC61439-5 | Assemblies for power distribution in public networks |
| IEC61439-6 | Busbar trunking systems (Busway) |
| IEC61439-7 | Assemblies for specific installations at public sites such as marinas, camping sites, market squares and Electrical Vehicles |
Assembly is a combination of LV Switchgear and Controlgear with associated Busbar, Enclosure, power and control wiring, Completely assembled with all Electrical and Mechnical Interconnections, designed and manufactured to be used as complete system, to be used for a common Purpose of Switching, Protection, Isolation, Measurement etc.
A Low Voltage Switchgear and Controlgear Assembly, having both Type Tested and Non Type Tested Arrangements – Derived by Calculations. In this case Destructive test like Short Circuit withstand and Temperature rise limits Tests are derrived by extrapolation from Type Tested ASSEMBLIES.
A Low Voltage Switchgear and Controlgear Assembly, fully Type Tested that is for each Characteristics of Standard requirement Varification is done by actual Test. Hence these Assembly is perefered for mission critical operations with no compromis / calculation for the Performance and Protection.