Low-Voltage SwitchGear and ControlGear
BS EN 60439 Part 1, describes a LV system for classifying the various forms of separation to be provided principally for:
- protection against contact with live parts belonging to the adjacent functional units.
- limitation of the probability of initiating arc faults.
- protection against the passage of solid foreign bodies from one unit of an Assembly to an adjacent unit.
Even though the Standard has now been revised with a UK National Annex to provide a wider scope of forms, it still does not give detailed advice on how to achieve these aims. Manufacturers of switchboard assemblies employ many variations of design to meet this protection and any other additional market requirements.
The means utilised to achieve these conditions may be partitions or barriers of metallic or non-metallic material. The partitions or barriers may provide individual separate compartments or alternatively, barriered sub-sections. Greater clarification has been included within this guide by providing some basic definitions of the terms used and explaining some of the various methods employed by manufacturers to meet the required degree of separation.
In general, the cost of an Assembly increases with enhanced levels of separation, but choosing the most expensive arrangement will not necessarily lead to the most appropriate solution.
| Title: | Guide To Forms Of Separation In Low-Voltage SwitchGear and ControlGear |
| Format: | |
| Size: | 0.15MB |
| Pages: | 24 |
| Download: | Please login first |
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rudolf
LV switchgear separation is a very useful reference for switchboard construction
ndrw1977
There is a newer reference relating to the latest standard IEC 61439:
http://bit.ly/HMqCys
Elmer Nacional
This is a good reference.
Edvard
Yes it is, it’s a very valuable guide for form of separations in LV switchgear.