1 Introduction.

1.1 Basic Requirements for Telecommunications Power Systems.
1.2 Applications Review.
1.3 Direct Current Power System Elements.
1.4 Power Sources and Loads.
1.5 General Design Considerations.
1.6 Standards, Practices, and Codes.

2 Electricity Review.

2.1 Electromotive Force.
2.2 Current Flow.
2.3 Voltage Sources.
2.4 Resistance.
2.5 Wire and Rigid Busbar Conductors.
2.6 Ohm's Law and Electrical Circuits.
2.7 Electrical Power.
2.8 Current Density.
2.9 Kirchhoff's Current and Voltage Laws.
2.10 Alternating Current References.

3 dc Power System Components.

3.1 Nominal System and Operating Voltages.
3.2 Noise and Transients in dc Power Systems.
3.3 Rectifier Systems.
3.4 Powerboard.
3.5 Monitoring and Control.
3.6 Primary and Secondary Distribution Systems.
3.7 Voltage Conversion References.

4 Telecommunications Batteries.

4.1 Batteries and Cells.
4.2 Battery Voltage and Discharge Curves.
4.3 Temperature Performance.
4.4 Battery Life.
4.5 Charge Acceptance and Thermal Runaway.
4.6 Cell Impedance and Conductance.
4.7 Short-Circuit Currents.
4.8 Cell Gassing and Ventilation References Bibliography.

5 System Design.

Part I Direct Current Power Systems Component Design.
5.1 System Design Considerations.
5.2 Battery System Design.
5.3 Rectifier System Design.
5.4 Powerboard Design.
5.5 Secondary Distribution Design.
5.6 Voltage Conversion Systems Design.
5.7 Other Design Considerations References (Part I).

Part II Direct Current Power Systems Circuit Design.
5.8 Circuit Design.
5.9 Direct Current Power System Bonding and Grounding References (Part II).

6 System Installation and Maintenance.

Part I Direct Current Power System Installation.
6.1 Installation Safety Guidelines.
6.2 Material Compatibility.
6.3 Circuit Wiring.
6.4 Terminal Connector Lugs.
6.5 Fasteners.
6.6 Power Wiring Installation.
6.7 Power Equipment Frames.
6.8 Auxiliary Framing.
6.9 Cable Racks.
6.10 Sleeves, Wall Openings, and Floor Openings.
6.11 Basic Installation Sequence.
6.12 Battery System Installation References (Part I).

Part II System Maintenance.
6.13 Overall Maintenance Requirements.
6.14 Annual System Maintenance Check.
6.15 Rectifier System Maintenance.
6.16 Inverter System Maintenance.

Part III Battery System Maintenance.
6.17 General Requirements.
6.18 Vented Lead–Acid Batteries.
6.19 Valve-Regulated Lead-Acid Batteries.
6.20 Battery Failure Case Studies References (Part III).

Appendix A. Comments on Historic dc Power System Configurations.

Appendix B. Mathcad Worksheet Examples.

Index.