Thickness of Main LV Panel
Thickness of Main LV Panel
(OP)
The main Low Voltage Panel (LVP) that I mean here is the panel directly connected to the transformer LV side through ACB.
In the local specifications of the project which I'm working, the panel is specified to have a thickness of minimum 2mm for its frame steel sheet body.
The contractor proposed a material submittal of ABB manufacturing with a letter from ABB saying that its ArTuk panel having 1.5mm thickness is preserving the highest mechanical impact IK09 (glazed door) & IK10 (blind door).
My question is: why the specs. is requiring the 2mm thickness? If it's for mechanical impact only, so it's satisfied by the manufacturer letter.
But if there are other reasons (its explosion withstand for instance or any other thing), I may require another letter from the manufacturer to ensure preserving/fufilling these other reasons.
Thank you.
In the local specifications of the project which I'm working, the panel is specified to have a thickness of minimum 2mm for its frame steel sheet body.
The contractor proposed a material submittal of ABB manufacturing with a letter from ABB saying that its ArTuk panel having 1.5mm thickness is preserving the highest mechanical impact IK09 (glazed door) & IK10 (blind door).
My question is: why the specs. is requiring the 2mm thickness? If it's for mechanical impact only, so it's satisfied by the manufacturer letter.
But if there are other reasons (its explosion withstand for instance or any other thing), I may require another letter from the manufacturer to ensure preserving/fufilling these other reasons.
Thank you.






RE: Thickness of Main LV Panel
If it were me and Arc Flash protection was not an issue, I would be looking at the fault duty capability ratings more than the details of how they get there, and who certified those ratings. Here in North America we require 3rd parties, such as UL and CSA, to certify equipment. Elsewhere that may not be the case, and manufacturers are allowed to "self certify" their claims of meeting industry standards. You must decide for yourself whether to believe them or not. As a gross general rule, larger companies have more at risk (in terms of reputation at least) in making unreasonable decisions on construction methods, but bad decisions can come at any time when market pressures demand cost reductions, and you don't want to be the one who suffers from that before they reverse themselves.
"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington
RE: Thickness of Main LV Panel
RE: Thickness of Main LV Panel
RE: Thickness of Main LV Panel
and can you share that decision with the folks on this forum?
RE: Thickness of Main LV Panel
:)