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BS EN IEC 61472-2:2021 Live working. Minimum approach distances - Method of determination of the electrical component distance for AC systems from 1,0 kV to 72,5 kV, 2021
- undefined [Go to Page]
- European foreword
- Endorsement notice
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Minimum approach distance, DA
- 5 Factors influencing the minimum approach distance [Go to Page]
- 5.1 Control of system overvoltages
- 5.2 Statistical overvoltage
- 5.3 Conductive floating object
- 5.4 Insulators
- 5.5 Determination of minimum electrical distance, DU
- 6 Example calculation
- Table 1 – Distance for rod-to-rod gap from IEEE 516-2009
- Table 2 – Phase-to-earth electrical distance for system voltagesfrom 1,0 kV up to and including 72,5 kV, ue2 = 3,5
- Table 3 – Phase-to-phase electrical distances for system voltagesfrom 1,0 kV up to and including 72,5 kV, up2 = 5,2
- Annex A (informative)Overvoltages [Go to Page]
- A.1 General
- A.2 Highest voltage of a system
- A.3 Temporary overvoltage
- A.4 Transient overvoltage [Go to Page]
- A.4.1 General
- A.4.2 Switching overvoltage
- A.4.3 Lightning overvoltages
- Annex B (informative)Ergonomic considerations [Go to Page]
- B.1 General
- B.2 Training, knowledge and skill
- B.3 Protective barriers
- B.4 Possibility of error
- B.5 Work procedure
- B.6 Personal factors
- B.7 Monitoring
- Bibliography [Go to Page]
