n each technical field, and in particular in the electrical sector, a condition sufficient (even if not necessary) for the realization of plants according to the “status of the art” and a requirement essential to properly meet the demands of customers and of the community, is the respect of all the relevant laws and technical standards.

Therefore, a precise knowledge of the standards is the fundamental premise for a correct approach to the problems of the electrical plants which shall be designed in order to guarantee that “acceptable safety level” which is never absolute

Juridical Standards These are all the standards from which derive rules of behavior for the juridical persons who are under the sovereignty of that State

Technical Standards These standards are the whole of the prescriptions on the basis of which machines, apparatus, materials and the installations should be designed, ma nufactured and tested so that efficiency and function safety are ensured.

The technical standards, published by national and international bodies, are circumstantially drawn up and can have legal force when this is attributed by a legislative measure.

ABB 500CPU05 1MRB150081R1/E

ABB 500SCM01 1MRB200059/C 1MRB15004R0001

ABB SYN5302A-Z,V217 3BHB006716R0217

ABB PFCL201C 20KN 3BSE023409R20

ABB PFCL201CE 10KN 3BSX105983-100

ABB 3BHE046836R0102 GFD563A102