BS 6626:2010

Foreword
Section 1: General
1 Scope
2 Normative references
3 Terms and definitions
4 Maintenance policy
5 Operational policy
6 Competence
Section 2: Safety
7 Personal protective equipment and treatment of persons
   suffering from electric shock
8 Operational experience
9 Safety rules and procedures for safe systems of work
10 Equipment location
11 Isolation and access for maintenance
12 Preparing for maintenance work
13 Fire extinguishing equipment
14 Testing
15 Disposal of scrap
Section 3: Common recommendations relating to maintenance
16 Manufacturer's instructions
17 Newly commissioned equipment
18 Frequency of maintenance
19 Records and drawings
20 Replacement parts
21 Cleanliness
22 Marking of covers and connections
23 Quality of connections
24 Maintenance and testing of insulation
25 Maintenance of safety earthing continuity
26 Shutters, locking devices, etc.
27 Interlocks
28 Ventilation
29 Equipment heating and lighting
30 Lifting devices
31 Tripping and closing supplies
32 Equipment tools, spares and test instruments
33 Conclusion of maintenance
Section 4: Additional recommendations relating to the
           maintenance of specific items
34 Circuit breakers
35 Switches
36 Disconnectors and earthing switches
37 Busbars and busbar chambers
38 Fuses
39 Contactors
40 Overload protective devices
41 Relays
42 Timing devices
43 Protective, measuring and control transformers
44 Instruments including recorders
45 Capacitors
46 Power electronic equipment
47 Cable boxes and terminations
48 Control switches including pushbuttons and limit switches
49 Liquid starters, controllers and resistors
50 Manual controllers
51 Sealed switches
52 Actuators
53 Indicator devices
54 Batteries
55 Compressed air plant
Annexes
Annex A (informative) - Statutory requirements and related
                        documents
Annex B (informative) - Example of items to be covered in
                        safety rules
Bibliography

Provides recommendations and guidance for the maintenance of electrical switchgear and controlgear having a rated a.c. or d.c. voltage above 1 kV and up to and including 36 kV.

This British Standard gives recommendations and guidance for the maintenance of electrical switchgear and controlgear having a rated a.c. or d.c. voltage above 1kV and up to and including 36kV.

NOTE1 This standard is not applicable to explosion protected switchgear and controlgear. Inspection and maintenance of electrical apparatus in explosive gas atmospheres is covered in BSEN60079‑17.

NOTE2 This British Standard covers applications above 1kV. Voltages below 1kV are considered to be low voltage in line with the European Commission Directive 73/23/EEC [1], known as the “Low voltage directive”.