equipment class
Installation refers to the mounting, setting, erection, etc. of equipment and accessories. These diagrams are for transient activity during installation (eg. sequence of activity) and not finished work.
A datasheet which provides precise information about a equipment/model or package which shows how it meets the 'equipment specification' and the 'design datasheet requirements'; includes noise and other test results prepared by manufacturer/supplier.
An enclosure that totally or partially surrounds an item in order to reduce its emitted noise.