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BS EN 50110-1:2023

BS EN 50110-1:2023

$198.66

Operation of electrical installations – General requirements

Published By Publication Date Number of Pages
BSI 2023 58
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This document is applicable to all operation of and work activity on, with, or near electrical installations. These are electrical installations operating at voltage levels from and including extra-low voltage up to and including high voltage. This latter term includes those levels commonly referred to as medium and extra-high voltage. These electrical installations are designed for the generation, transmission, conversion, distribution and use of electrical power. Some of these electrical installations are permanent and fixed, such as a distribution installation in a factory or office complex, others are temporary, such as on construction sites and others are mobile or capable of being moved either whilst energised or whilst not energised nor charged. Examples are electrically driven excavating machines in quarries or open-cast coal sites. This document sets out the requirements for the safe operation of and work activity on, with, or near these electrical installations. The requirements apply to all operational, working and maintenance procedures. They apply to all non-electrical work such as building work near to overhead lines or underground cables as well as electrical work, when there is a risk of electrical danger. This document does not apply to ordinary persons when using installations and equipment, provided that the installations and equipment comply with relevant standards and are designed and installed for use by ordinary persons. This document has not been developed specifically to apply to the electrical installations listed below. However, if there are no other rules or procedures, the principles of this document could be applied to them: – on any aircraft and hovercraft moving under its own power, (these are subject to International Aviation laws which take precedence over national laws in these situations); – on any sea going ship moving under its own power, or under the direction of the master, (these are subject to International Marine laws which take precedence over national laws in these situations); – electronic telecommunications and information systems; – electronic instrumentation, control and automation systems; – at coal or other mines; – on off-shore installations subject to International Marine laws; – on vehicles; – on electric traction systems; – on experimental electrical research work.

PDF Catalog

PDF Pages PDF Title
2 undefined
9 1 Scope
2 Normative references
10 3 Terms and definitions
3.1 General
11 3.2 Personnel, organization and communication
12 3.3 Working zone
13 3.4 Working
14 3.5 Protective devices
15 3.6 Voltages
3.7 Distances
17 3.8 Symbols
18 4 Basic principles
4.1 Safe operation
4.2 Personnel
4.3 Organization
4.3.1 General
19 4.3.2 The installation manager (IM)
4.3.3 The operation controller (OC)
4.3.4 The work controller (WC)
4.3.5 The worker (W)
4.3.6 Complexity of work activity
20 4.3.7 Objections for safety
4.4 Communication (transmission of information)
4.5 Work location
4.6 Tools, equipment and devices
21 4.7 Drawings and records
4.8 Signs
4.9 Emergency arrangements
22 4.10 Types of supervision
4.11 Determination of distances
4.11.1 General
4.11.2 Limit distances
4.11.2.1 General
24 4.11.2.2 Explanations of determination of the values of DL and DV
25 4.11.3 Determination of working distances
5 Operational procedures
5.1 General
5.2 Operating activities
26 5.3 Measurement
5.4 Testing
27 5.5 Inspection
28 6 Working procedures
6.1 General
6.1.1 General requirements
29 6.1.2 Specific requirements in case of induction
6.1.3 Specific requirements according to weather conditions
6.2 Dead working
6.2.1 General
30 6.2.2 Disconnect completely
6.2.3 Secure against re-connection
6.2.3.1 General
6.2.3.2 Remote control
6.2.4 Verify absence of operating voltage
6.2.4.1 General
31 6.2.4.2 Earthing switch
6.2.5 Earthing and short-circuiting
6.2.5.1 General
32 6.2.5.2 Requirements for extra low and low voltage installations
6.2.5.3 Requirements for high voltage installations
6.2.6 Protection against adjacent live parts
6.2.7 Permission to start work
33 6.2.8 Re-energizing after work
6.3 Live working
6.3.1 General
34 6.3.2 Training and qualification
6.3.3 Maintenance of personnel ability
6.3.4 Working methods
6.3.4.1 General
6.3.4.2 Hot stick working – Safe clearance working
6.3.4.3 Insulating glove working
6.3.4.4 Bare hand working
6.3.5 Working instructions
35 6.3.6 Tools, equipment and devices
6.3.7 Environmental conditions
6.3.8 Organization of work
6.3.8.1 Preparation for work
6.3.8.2 Action of the operation controller (OC)
36 6.3.8.3 Action of the work controller (WC)
6.3.9 Specific requirements for extra-low voltage installations
6.3.10 Specific requirements for low voltage installations
6.3.11 Specific requirements for high voltage installations
6.3.12 Specific works on live parts
6.4 Working within the vicinity zone
6.4.1 General
37 6.4.2 Protection by screen, barrier, enclosure or insulating covering
6.4.3 Protection by safe distance and supervision
38 6.5 Working outside the vicinity zone
6.5.1 General
6.5.2 Specific requirements for non-electrical work, e.g. construction work, and electrical work
39 7 Maintenance procedures
7.1 General
7.2 Personnel
40 7.3 Repair work
7.4 Replacement work
7.4.1 Replacement of fuses
7.4.2 Replacement of lamps and accessories
41 7.5 Temporary interruption of maintenance work
7.6 End of maintenance work
42 Annex A (informative)Guidance for distances in air for working procedures
A.1 Limit distances
A.2 Working distances
A.2.1 General
A.2.2 Determination of the distance value related to the voltage level
A.2.3 Considerations of tools, devices or equipment
43 A.2.4 Ergonomic considerations
A.2.4.1 General
A.2.4.2 Personnel
A.2.4.3 Equipment
A.2.4.4 Determination of minimum working distances
A.2.5 Working distance for live working
44 A.2.6 Working distance for working within the vicinity zone
A.2.7 Working distance for working outside the vicinity zone
45 Annex B (informative)Additional information for safe working
B.1 Example for responsibility levels
B.1.1 General scheme
46 B.1.2 Domestic
B.1.3 Small company or craftsman
B.1.4 Large or industrial company
B.2 Example of application of live working
B.3 Atmospheric conditions that are part of environmental conditions to be assessed
B.3.1 Precipitation
B.3.2 Thick fog
47 B.3.3 Thunderstorms
B.3.4 Violent wind
B.3.5 Salt storms
B.3.6 Extra low temperature
B.4 Fire protection – Fire fighting
B.5 Work location presenting explosion risks
48 B.6 Arc hazard
B.6.1 General
B.6.2 Hazards
B.6.3 Risk assessment
49 B.7 Emergency arrangements
50 Annex C (informative)Terms and definitions in alphabetic order
C.1 English
51 C.2 French
53 C.3 German

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BS EN 50110-1:2023
$198.66