CSA C22.3 No. 8 : 1991
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Hardcopy , PDF
07-07-2009
French
01-01-2003
Contents
Preface
1. Scope
2. Definitions and Reference Publications
2.1 General Definitions
2.2 Communications Definitions
2.3 Reference Publications
3. Insulation Coordination and Electrical Clearances
3.1 General
3.2 Voltage Classification
3.3 Overvoltages
3.4 Criteria for Electrical Clearances and
Insulation Levels
3.5 Electrical Clearances
3.5.1 General
3.5.2 Static Clearance
3.5.3 Dynamic Clearance
3.5.4 Reductions
3.5.5 Special Clearances
3.6 Electrical Requirements of OCS Insulators
3.7 Electrical Insulation Characteristics of High
Voltage Switchgear and Transformers for Use with
OCS Power Systems
4. Vertical and Lateral Clearances
4.1 General
4.2 Components of Design Clearances
4.2.1 Load Clearance Limit (Ys)
4.2.2 Dynamic Load Clearance Limit (Yd)
4.2.3 Static Electrical Clearance (Cs)
4.2.4 Dynamic Electrical Clearance (Cd)
4.2.5 OCS Uplift (L)
4.2.6 Pantograph Movements (Lt and S)
4.2.7 OCS Sag (G)
4.2.8 Live Vertical Distance of OCS
Construction (D)
4.2.9 Tolerances and Allowances (T, Ts, C, F1,
and F2)
4.3 Physical Clearances
4.4 Determination of Total Clearance Requirements
4.5 OCS Equipment
4.5.1 Phase Breaks
4.5.2 Static Insulators
4.6 Parallel OCS Circuits
5. Overhead Contact Systems (OCS)
5.1 General
5.2 OCS Configurations
5.3 Variable and Constant Tension Systems
5.4 Pre-sag
5.5 Pantographs
5.6 Stagger
5.7 Gradient
5.8 Physical Clearance
5.9 Wire
5.10 System Depth (Encumbrance) and Droppers
5.11 Cantilevers
5.12 Poles
5.13 Foundations
5.14 Multiple Track Installations
5.15 Guying
5.16 Anchors
5.17 Weight Tensioning Assembly
5.18 Sectioning
5.19 Mechanical Design
5.20 Phase Breaks and Section Breaks
5.21 Disconnects
5.22 Electrification Layouts
6. Interference with Communications Systems
6.1 General
6.2 Sources of Interference
6.3 Magnetic Induction
6.4 Electric Induction
6.5 Ground Potential Rise
6.6 Shielding
6.7 Susceptiveness
6.8 Interference Limits
6.8.1 Longitudinal Voltage
6.8.2 Circuit Noise and Balance
6.8.3 Electromagnetic Noise (EMI)
6.9 Prevention and Mitigation of Interference
6.9.1 General
6.9.2 Route Separation
6.9.3 Choice of Facility
6.9.4 Ground Current and Shielding
6.9.5 Harmonics
6.9.6 Voltage to Ground
6.9.7 Metallic Voltage
6.9.8 Ground Potential Rise
7. Interference with and Protection of Railway
Signalling and Communications Systems
7.1 General
7.2 Signalling and Communications Systems
7.3 Railway Signal Systems
7.4 Track Circuits
7.5 Signal Control Circuits
7.6 Automatic Grade Crossing Warning System
7.7 Impedance Bonds
7.8 Signal Supply Circuits
7.9 OCS Configuration
8. Grounding, Bonding, and Fault Clearing
8.1 General
8.1.1 Operational Grounding
8.1.2 Safety Grounding
8.1.3 Classification of Grounding Requirements
8.1.4 Grounding in Territory with Signal Track
Circuits
8.1.5 Relevant Standards
8.2 Grounding of the Components of the OCS
8.2.1 OCS Poles and Support Structures
8.2.2 OCS Circuit Breakers, Disconnect Switches,
and Fuses
8.2.3 OCS Surge Arresters
8.2.4 Detection and Clearing of Faults
8.2.5 Traction Feeder Stations and Switching
Stations
8.2.6 Stub End Tracks
8.3 Other Railway Equipment and Installations
within the Right-of-Way
8.3.1 Stands, Switch Mechanisms, and De-rails
8.3.2 Station Buildings, Platforms, Yards, and
Maintenance Shops
8.3.3 Grade Crossings and Pedestrian Crossings
8.3.4 Bridges
8.3.5 Tunnels
8.4 Grounding of Structures, Buildings, and Fences
Adjacent to Electrified Rail Tracks
8.4.1 Danger Zones
8.4.2 Grounding in Zone 1
8.4.3 Grounding in Zone 2
8.4.4 Grounding in Zone 3
8.5 Pipelines and Fuel Tanks
8.5.1 Pipelines
8.5.2 Above Ground Fuel Tanks
9. Electric Utility Interface Unbalance and Harmonics
9.1 General
9.2 Load Curves
9.3 In-Rush Currents
9.4 Negative Sequence Voltages
9.5 Harmonics
9.5.1 Harmonic Generation
9.5.2 Effect of Harmonics on the Power System
9.5.3 Mathematical Definition of the DF and I-T
Product
9.5.4 Tentative Limits to Harmonic Distortion
9.5.5 Harmonic Suppression by Use of Filters
Tables
Figures
Appendix A-Bibliography
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