UNE-EN 50110-1:2014

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
    3.1 General
    3.2 Personnel, organization and communication
    3.3 Working zone
    3.4 Working
    3.5 Protective devices
    3.6 Nominal voltages
    3.7 Distances
4 Basic principles
    4.1 Safe operation
    4.2 Personnel
    4.3 Organization
    4.4 Communication (Transmission of information)
    4.5 Work location
    4.6 Tools, equipment and devices
    4.7 Drawings and records
    4.8 Signs
5 Standard operational procedures
    5.1 General
    5.2 Operating activities
    5.3 Functional checks
6 Working procedures
    6.1 General
    6.2 Dead working
    6.3 Live working
    6.4 Working in the vicinity of live parts
7 Maintenance Procedures
    7.1 General
    7.2 Personnel
    7.3 Repair work
    7.4 Replacement work
    7.5 Temporary interruption
    7.6 End of maintenance work
Figure 1 Distances in air and zones for working procedures
Figure 2 Limitation of the live working zone by the use
          of an insulating protective device
Annex A (informative) Guidance for distances in air for
working procedures
A.1 Live working
A.2 Work in the vicinity
A.3 Electrical distance
A.4 Ergonomic component
Table A.1 Guidance for distances DL and DV based on
            prEN 50179
Table A.2 Guidance for distances DC and DV based on
            ENV 50196
Annex B (informative) Additional information for safe
working
B.1 Example of application of live working
B.2 Fire protection - fire fighting
B.3 Work location presenting explosion risks
Annex C (informative) Bibliography

Applies to all operation of and work activity on, with, or near electrical installations.