martinrelayer
Electrical
- Oct 26, 2007
- 68
Hello,
There will be temporary maintenance works in special places like metallic tanks or very humid places and our local code demands to fulfill some criteria.
It says that the lighting and the tools shall be of 24V or less, or shall have insulating class II (double insulation), or shall be connected through an insulating transformer.
Of couse our tools are of 220Vac and not insulating class II, and there will be major works so we will need all of our tools to match the needs of the workers, so we'll need the 220Vac inside the place.
In case of insulating transformers, which are the conditions tha they should fulfill? which connection is required and which kind of protection is demanded?
Any reference? (IEC, IEEE...)
I was thinking IT single phase distribution, and only short circuit and thermal protection but I would be grateful to hear your experience or some reference.
thanks in advance!!
There will be temporary maintenance works in special places like metallic tanks or very humid places and our local code demands to fulfill some criteria.
It says that the lighting and the tools shall be of 24V or less, or shall have insulating class II (double insulation), or shall be connected through an insulating transformer.
Of couse our tools are of 220Vac and not insulating class II, and there will be major works so we will need all of our tools to match the needs of the workers, so we'll need the 220Vac inside the place.
In case of insulating transformers, which are the conditions tha they should fulfill? which connection is required and which kind of protection is demanded?
Any reference? (IEC, IEEE...)
I was thinking IT single phase distribution, and only short circuit and thermal protection but I would be grateful to hear your experience or some reference.
thanks in advance!!