400V Sub-DB Busbar Insulation Spacing

Is there any international standard for this requirement?

Yes there are. If you are ordering a complete switchboard from a switchboard manufacturer or supplier then it should be built to the standards applicable to your country. If you are wanting to buy sub assemblies (like bus work) and build your own then you will need to provide us some more information as the applicable standards vary from country to country.

Whether you use Insulated Busbar or Bare Busbar, you need to have enough spacing between each busbar with the minimum distance of 60 mm to 75mm.

60mm to 75mm is not the standard requirement distance for the safety of the busbar but it is for your own maintenance works where you need to tighten these busbar connection (busbar to busbar) in later stage or you need to tighten the busbar holder inside your Sub Board.(if found to be loosen)

Where will be a time where you need to tighten the blot and nut at the incoming compartment to your breakers or your cables that connected to the busbar.

If you have too small distance between these busbar, later stage you will find difficulties to do your maintenance works.

Hi

there are always some standard requirement for this also, as per standard minimum clearance depends on the material group and pollution degree of the insulating material which is further derived from Comprative Tracking Index (CTI).

in addition to this, space required to do some work on bus bar are also to be considered,

so its vary from country to country and manufacturer to manufacturer,

Thanks & Regards

Divyesh patel

CE-marked equipment is type-tested as suitable for application throughout the European Economic Community.

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