EN 50628:2016

European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Means of protection against electric- and electrostatic
   charging
6 Rooms and Locations
7 Protection against fire spreading
8 Insulation, Insulation-resistance and its check
9 Signboards, labels, wiring diagrams, inscriptions
10 Nominal voltages
11 Protection against electrical shock
12 Protection in IT-Systems
13 Protection in TN-systems
14 Other means of protection
15 Protection against danger caused by mechanical
   influence on non-intrinsically safe cables
16 Intrinsically safe electrical systems
17 Installation of transformers
18 Substations
19 Disconnecting devices in line of each switch-gears
20 Switchgears
21 Couplers and connectors
22 Luminaries and lighting installation
23 Cables
24 Protection of electrical equipment or installation
   against overcurrent
25 Calculation of short circuit currents
26 Additional requirements for systems and equipment
   with nominal voltage of more than 1 kV up to 6,6 kV
   in production areas and road heading
27 Additional requirements for cable entry selection
Annex A (informative) - Documentation
Annex B (normative) - Tables and figures regarding free
        space
Annex C (informative) - Example for a galvanically
        separated system (in production areas or road
        headings)
Annex D (informative) - Example for calculation (according
        to 12.3.6)
Annex E (informative) - Table for cables suitable for
        underground workings
Annex F (informative) - Table for current carrying capacity
        of cables suitable for underground workings
Bibliography

This European Standard specifies the safety requirements for the erection of new electrical installations.This European Standard is supplementary to other relevant harmonized standards, for example HD 60364 series and the EN 61936 series as regards electrical installation requirements.This European Standard also refers to EN 60079-0 and its associated standards for the construction, testing and marking requirements of suitable electrical equipment.EN 60079 14 gives the specific requirements for design, selection and erection of electrical installations in explosive atmospheres.NOTEEN 60079-14 can apply to electrical installations in mines where explosive gas atmospheres other than firedamp can be formed and to electrical installations in the surface installation of mines.This European Standard applies to:a)electrical installation in underground workings of mines;b)electrical installations and parts of electrical installation above ground, which are directly connected with the underground workings in functional and safety relating matters because of being part of the underground working process:These are in particular:-safety and monitoring devices relating to the power distribution of the underground workings,-communication system of hoisting and inclined haulage plants,-intrinsically safe electrical installations of above ground installation being part of underground workings,-remote control systems if they shall fulfil increased requirements relating to functional safety,-electrical installation and electrical equipment of ventilation systems and shaft casings above ground being endangered by firedamp of the underground ventilation,-firedamp drainage systems;c)electrical installation in underground workings outside mining if it is demanded of the competent national authorities.National regulations of the mining authority shall remain unaffected.This standard applies to installations at all voltages mentioned in Clause 10.Requirements above both columns are requirements of all underground workings.Gassy minesRequirements within left column are requirements for underground workings in the coal mining industry which could be endangered by firedamp.Other minesRequirements within right column are requirements for underground workings of the coal mining industry not likely to be endangered by firedamp and for underground workings of non-coal mining industry.