Electrical installation
Electrical installation - a set of machines, devices, lines, and auxiliary equipment (together with the structures and rooms in which they are installed), intended for the production, transformation, transmission, distribution of electrical energy and its conversion into other forms of energy.
Electrical installations are divided according to electrical safety conditions into:
electrical installations up to 1 kV with effectively grounded neutral,
electrical installations up to 1 kV with isolated neutral,
electrical installations above 1 kV in networks with effectively grounded neutral (with large short-circuit currents on
electrical installations above 1 kV in networks with isolated neutral (with small ground fault currents)
Source: Order of the State Mining and Industrial Safety Inspection of Russia dated 05.06.2003 No. 65 "On Approval of the Instruction on Safe Operation of Electrical Installations in the Mining Industry" (Registered by the Ministry of Justice of Russia on 19.06.2003 No. 4736)