Draft Details
- Railway Electrification (New Standard)
- CSA C22.3 No. 8
- Legal Notice for Draft Standards
- + 1 Scope
- 1.1
- 1.2
- 1.3
- 1.4
- 1.5
- 1.6
- 2 Reference publications
- + 3 Definitions
- 3.1 General Definitions
- 3.2 Communications Definitions
- + 4 Insulation Coordination and Electrical Cleara...
- 4.1 General
- 4.2 Voltage Classification
- + 4.3 Overvoltages & Insulation Coordination Stud...
- 4.3.1
- + 4.4 Criteria for Electrical Clearances and Insu...
- 4.4.1
- 4.4.2
- 4.4.3
- + 4.5 Electrical Clearances
- 4.5.1 General
- 4.5.2 Static Clearance
- 4.5.3 Dynamic Clearance
- + 4.5.4 Reductions
- 4.5.4.1
- 4.5.4.2
- + 4.5.5 Special Clearances
- 4.5.5.1
- 4.5.5.2
- 4.5.5.3
- 4.5.5.4
- 4.5.5.5
- + 4.6 Electrical Requirements of OCS Insulators
- 4.6.1
- 4.6.2
- + 4.6.3 Additional Requirements
- 4.6.3.1
- 4.6.3.2
- 4.6.3.3
- + 4.7 Electrical Insulation Characteristics of Hi...
- 4.7.1
- 4.7.2
- 4.7.3
- + 5 Mechanical Vertical and Lateral Clearances
- + 5.1 General
- 5.1.1
- 5.1.2
- 5.1.3
- 5.1.4
- 5.1.5
- 5.1.6
- 5.1.7
- 5.1.8
- 5.1.9
- 5.1.10
- + 5.2 Components of Design Clearances
- 5.2.1 Load Clearance Limit (Ys)
- 5.2.2 Dynamic Load Clearance Limit (Yd)
- + 5.2.3 Static Electrical Clearance (Cs)
- 5.2.3.1
- 5.2.3.2
- 5.2.3.3
- 5.2.3.4
- + 5.2.4 Dynamic Electrical Clearance (Cd)
- 5.2.4.1
- 5.2.4.2
- 5.2.4.3
- 5.2.5 OCS Uplift (L)
- 5.2.6 Pantograph Movements (Lt and S)
- 5.2.7 OCS Sag (G)
- 5.2.8 Live Vertical Distance of OCS Constructio...
- 5.2.9 Tolerances and Allowances (T, Ts, C, F1, ...
- 5.3 Physical Clearances
- + 5.4 Determination of Total Clearance Requiremen...
- 5.4.1
- 5.4.2
- + 5.5 OCS Equipment
- 5.5.1 Phase Breaks
- 5.5.2 Static Insulators
- 5.6 Parallel OCS Circuits
- + 6 Overhead Contact Systems (OCS)
- 6.1 General
- + 6.2 OCS Configurations
- 6.2.1
- 6.2.2
- 6.2.3
- 6.2.4
- 6.2.5
- 6.2.6
- + 6.3 Variable and Constant Tension Systems
- 6.3.1
- 6.3.2
- 6.3.3
- 6.4 Pre-sag
- + 6.5 Pantographs
- 6.5.1
- 6.5.2
- 6.5.3
- 6.5.4
- 6.5.5
- 6.5.6
- 6.6 Stagger
- + 6.7 Gradient
- 6.7.1
- 6.7.2
- + 6.8 Physical Clearance
- 6.8.1
- 6.8.2
- 6.8.3
- + 6.9 Wire
- 6.9.1
- 6.9.2
- 6.9.3
- 6.9.4
- 6.9.5
- 6.9.6
- 6.9.7
- 6.9.8
- + 6.10 System Depth (Encumbrance) and Droppers
- 6.10.1
- 6.10.2
- 6.10.3
- 6.10.4
- + 6.11 Cantilevers
- 6.11.1
- 6.11.2
- 6.11.3
- 6.11.4
- 6.11.5
- + 6.12 Poles
- 6.12.1
- 6.12.2
- 6.12.3
- 6.12.4
- 6.12.5
- 6.12.6
- 6.12.7
- 6.12.8
- 6.12.9
- 6.12.10
- 6.12.11
- + 6.13 Foundations
- 6.13.1
- 6.13.2
- 6.13.3
- 6.13.4
- 6.13.5
- 6.13.6
- + 6.14 Multiple Track Installations
- 6.14.1
- 6.14.2
- 6.14.3
- 6.15 Guying
- 6.16 Anchors
- + 6.17 Weight Tensioning Assembly
- 6.17.1
- 6.17.2
- + 6.18 Sectioning
- 6.18.1
- 6.18.2
- 6.18.3
- 6.18.4
- 6.18.5
- + 6.19 Mechanical Design
- 6.19.1
- 6.19.2 Design Loadings
- 6.19.3
- 6.19.4
- 6.19.5
- 6.19.6
- 6.19.7
- + 6.19.8
- 6.19.8.1
- 6.19.8.2
- 6.19.8.3
- 6.19.8.4
- 6.19.9
- 6.19.10
- 6.19.11
- 6.19.12
- + 6.20 Phase Breaks and Section Breaks
- 6.20.1
- 6.20.2
- 6.21 Disconnects
- 6.22 Electrification Layouts
- + 7 Electromagnetic compatibility
- + 7.1 General
- 7.1.1
- 7.1.2
- 7.1.3
- 7.1.4
- 7.1.5
- + 7.2 Sources of Interference
- 7.2.1
- 7.2.2
- 7.2.3
- 7.2.4
- 7.2.5
- + 7.3 Magnetic Induction
- 7.3.1
- 7.3.2
- 7.3.3
- 7.3.4
- 7.3.5
- 7.3.6
- 7.3.7
- 7.3.8
- + 7.4 Electrostatic Induction
- 7.4.1
- 7.4.2
- 7.4.3
- 7.4.4
- + 7.5 Ground Potential Rise
- 7.5.1
- 7.5.2
- 7.5.3
- + 7.6 Shielding
- 7.6.1
- 7.6.2
- 7.6.3
- 7.6.4
- 7.6.5
- + 7.7 Subsceptibility
- 7.7.1
- 7.7.2
- 7.7.3
- 7.7.4
- 7.7.5
- 7.7.6
- 7.7.7
- + 7.8 Interference Limits
- 7.8.1 Longitudinal Voltage
- 7.8.2 Circuit Noise and Balance
- 7.8.3 Electromagnetic Noise (EMI)
- + 7.9 Prevention and Mitigation of Interference
- 7.9.1 General
- 7.9.2 Route Separation
- 7.9.3 Choice of Communications Technologies / E...
- 7.9.4 Ground Current and Shielding
- 7.9.5 Harmonics
- 7.9.6 Voltage to Ground
- 7.9.7 Metallic Voltage
- 7.9.8 Ground Potential Rise
- 7.10 Baseline, Commissioning & Maintenance Meas...
- 7.11 Baseline, Commissioning & Maintenance Meas...
- + 8 Protection of Railway Signalling Systems
- 8.1.1
- 8.1.2
- 8.1.3
- 8.1.4
- 8.2 Railway Signalling Systems
- 8.2.1
- + 8.2.2
- 8.2.3
- + 8.3 Track Circuits
- 8.3.1
- 8.4 Axle Counters
- 8.5 Signal Control Circuits
- + 8.6 Automatic Grade Crossing Warning Systems
- 8.6.1
- 8.6.2
- 8.7 Impedance Bonds
- 8.7.1
- + 8.8 Signal Power Supply Circuits
- 8.8.1
- 8.8.2
- 8.8.3
- + 9 Grounding, Bonding and Fault Clearing
- + 9.1 General
- 9.1.1 System Grounding (Neutral Grounding)
- 9.1.2 Equipment and Structure Grounding
- 9.1.3 Safety Grounding
- 9.1.4 Grounding in Territory with Signal Track ...
- + 9.2 Grounding of the Components of the OCS
- + 9.2.1 OCS Poles and Support Structures
- 9.2.1.1
- 9.2.1.2
- 9.2.1.3
- 9.2.1.4
- 9.2.1.5
- 9.2.2 OCS Circuit Breakers, Disconnect Switches...
- 9.2.3 OCS Surge Arresters
- 9.2.4 Detection and Clearing of Faults
- + 9.2.5 Traction power installations
- 9.2.5.1
- 9.2.5.2
- 9.2.5.3
- 9.2.5.4
- 9.2.5.5
- 9.2.5.6
- 9.2.6 Stub End Tracks
- + 9.3 Other Railway Equipment and Installations w...
- 9.3.1 Stands, Switch Mechanisms, and De-rails
- 9.3.2 Passenger Station Buildings, Platforms, Y...
- + 9.3.3 Grade Crossings and Pedestrian Crossings
- 9.3.3.1
- 9.3.3.2
- 9.3.3.3
- 9.3.4 Bridges
- 9.3.5 Tunnels
- 9.3.6 Switch heaters
- 9.3.7 Wayside power cabinets and signal bungalo...
- 9.3.8 Traction wayside power cabinet
- + 9.4 Safety requirements
- 9.4.1 Ground Potential Rise
- 9.4.2 Rail potential
- 9.4.3 Body voltage and touch voltage
- 9.4.4 Touch voltage at vehicles
- 9.4.5 Fault duration condition
- + 9.4.6 Voltage limits and time duration aspects
- 9.4.6.1 General
- 9.4.7 Voltage limits for the safety of persons
- + 9.5 Protective provisions against direct contac...
- 9.5.1 General
- + 9.5.2 Protection by clearance
- 9.5.2.1 Standing surface
- 9.5.2.2 Exceptions for working persons
- 9.5.3 Clearance between live parts of overhead ...
- + 9.5.4 Protection by protective obstacles
- 9.5.4.1 General
- + 9.6 Grounding of Structures, Buildings, and Fen...
- 9.6.1 OCLZ Zone
- 9.6.2 Structures and Buildings
- 9.6.3 Fences
- 9.6.4 Pipelines
- 9.6.5 Above Ground Fuel Tanks
- 9.6.6 Other Utilities
- + 10 Electric Utility Interface and System Studie...
- + 10.1 General
- 10.1.1
- 10.1.2
- 10.2 Load Curves
- 10.3 Traction Load Flow Study
- 10.4 Short Circuit Study
- 10.5 Protective Device Coordination Study
- 10.6 Arc Flash Hazard Study
- 10.7 Insulation Coordination Study
- + 10.8 Phase Unbalance Study
- 10.8.1 Unbalance Definition and Assessment
- 10.8.2 Unbalance Limit
- 10.8.3 Mitigation Techniques
- 10.9 Voltage Fluctuations
- 10.11 Switching Transients
- + 11 Electrical Equipment
- 11.1 General
- + 11.2 AC Switchgear
- 11.2.1 Service conditions
- + 11.2.2 Ratings
- 11.2.2.1 Rated voltage
- 11.2.2.2 Rated power frequency
- 11.2.2.3 Rated insulation level
- + 11.2.3 Routine testing
- 11.2.3.1 Dielectric strength test
- 11.2.3.2 Impulse withstand test
- + 11.3 Traction and Auto-Transformers
- + 11.3.1 Service conditions
- + 11.3.1.1 Temperature
- 11.3.1.1.1 Cooling air temperature limit
- 11.3.1.1.2 Liquid temperature limit
- 11.3.1.2 Altitude
- + 11.3.2 Preferred ratings
- 11.3.2.1 Rated current/continues rating
- 11.3.2.2 Temperature References Continuous MVA ...
- 11.3.2.3 Temperature References and Daily Load ...
- 11.3.2.4 Temperature References and Temperature...
- 11.3.2.5 Duty cycle/class
- + 11.3.2.6 Short-circuit stresses
- 11.3.2.6.1 Short-circuit withstand
- + 11.3.3 Tests
- + 11.3.3.1 Dielectric tests
- 11.3.3.1.1 Applied voltage test
- 11.3.3.1.2 Lightning impulse test
- + 11.4 AC OCS Disconnect Switches
- 11.4.1 General
- + 11.4.2 Rated insulation level
- 11.4.2.1 Manual Operating Mechanism
- 11.4.2.2 Motor Operated Disconnects (MOD)
- 11.4.2.3 Disconnect Switch Control
- 11.4.2.4 Bearings
- 11.4.2.5 Insulators
- 11.4.2.6 Arcing Horns
- 11.4.3 Grounding Switches
- 11.4.4 Auxiliary Switches
- + Tables
- Table 1
- Table 2
- Table 3
- Table 4
- Table 5
- + Figures
- Figure 1
- Figure 2
- Figure 3
- Figure 5
- Figure 6
- Figure 7
- Figure 8
- Figure 9
- Figure 10
- Figure 11
- Figure 12
- Figure 13
- Figure 14
- Figure 15
- Figure 16
- Figure 17
- Figure 18
- Figure 19
- Figure 20
- Figure 21
1.1
This standard applies to the overhead contact system and traction power supply to the locomotive, using a single-phase alternating supply (AC) at 25 kV or 2x25 kV nominal voltage, 60 Hz, for new installations and modification to existing system.
1.3
The standard covers design considerations in the following selected areas of railway electrification:
a) Electric rail traction power system studies;
b) vertical and horizontal clearances;
c) overhead contact systems;
d) interference with railway signaling circuits;
e) interference with communication circuits;
f) utility interface-unbalance and harmonics;
g) grounding and bonding; and
h) the overall traction power system performance as it relates to system reliability, availability, maintainability, and safety (RAMS)
1.5
Conditions not covered by this standard may be governed by the appropriate requirements or other standards and documents in common use or as required by constituted authority.
1.6
In addition to the reference publications listed in Clause 2, the standards and guidelines of the American Railway Engineering and Maintenance-of-Way Association (AREMA), the Association of American Railroads (AAR), the European Norms (EN), the International Electrotechnical Commission (IEC), and the Union Internationale des Chemins de Fer (UIC) may be used in areas not included in this standard.
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