1 General and Introduction -- 1.1 Functions and Requirements -- 1.2 Basic Types of Power Converter -- 1.3 Elements of a Power Converter -- 1.4 Energy Storage -- 1.5 Primary Power Sources -- 1.6 Power Supply Systems -- 1.7 UPS Systems -- 1.8 Mains-independent Hybrid Power Supply Systems -- 1.9 Historical Review -- 2 Requirements of Telecommunications Systems on the Power Supply -- 2.1 D.C. Power Supplies -- 2.2 A.C. Power Supplies -- 3 Operating Modes of a Direct Current Power Supply System -- 3.1 Rectifier Mode -- 3.2 Battery (Charge-Discharge) Mode -- 3.3 Standby Parallel Mode -- 3.4 Changeover Mode -- 3.5 Combined Standby Parallel and Changeover Mode with Compensator for Additional Voltage -- 3.6 Assignment of Operating Modes to Communications Systems -- 3.7 Further Modes -- 4 Operating Modes of an Alternating Current Power Supply System -- 4.1 Mains Mode -- 4.2 A.C. Changeover Mode -- 4.3 Uninterruptible a.c. Changeover Mode -- 5 Public Mains -- 5.1 Type of Voltage -- 5.2 Tolerances of the a.c. Supply Voltage and Supply Frequency -- 5.3 Wave Shape and Distortion Factor of the a.c. Supply Voltage -- 5.4 Power Failures -- 6 Energy Storage -- 6.1 Stationary Lead-Acid Batteries -- 6.2 Stationary Alkaline Batteries -- 6.3 Lithium Primary Batteries -- 6.4 Design Pointers -- 6.5 Maintenance -- 6.6 Installation of Batteries -- 7 Basic Circuits and Process Control -- 7.1 Rectifier Circuits -- 7.2 Stabilizing and Control Procedures -- 7.3 Rectifying with Stabilization -- 7.4 D.C./D.C. Conversion with Stabilization -- 7.5 Inverting with Stabilization -- 8 Applications of Control Systems in Power Supply Devices -- 8.1 General -- 8.2 The Operation of Open- and Closed-loop Control Systems -- 8.3 Components of the Closed-loop Control System -- 8.4 Operational Amplifiers in the Regulator -- 8.5 Controlled Rectifiers with Thyristor Power Section -- 8.6 Controlled Power Supply Equipment with Transistor Power Section -- 9 Switching Mode Power Supplies -- 9.1 Type 48 V/12 A (60 V/10 A) -- 9.2 Type 48 V (60 V)/30 A and 100 A -- 9.3 Type 48 V/120 A (60 V/100 A) -- 9.4 Type 48 V (60 V, 67 V)/50 A and 100 A -- 9.5 Power Supply Controller -- 10 Thyristor Controlled Rectifiers -- 10.1 Type 48 V (60 V)/200 A -- 10.2 Type 48 V (60 V)/1000 A -- 10.3 Assemblies -- 10.4 Technical Data -- 11 Magnetically Controlled Rectifiers -- 11.1 Types 24 V to 220 V/10 A to 400 A -- 12 D.C./D.C. Converter -- 12.1 Type 50 W to 200 W -- 12.2 Type 750 W -- 13 D.C./A.C. Inverters -- 13.1 Type 2.5 kVA -- 13.2 Type 15 kVA (3x5 kVA) -- 14 Static UPS Systems -- 14.1 Type 10 to 500 kVA -- 15 Diesel Generating Sets -- 15.1 Standby Power Supply System with Fully Automatic Mains Failure Control -- 15.2 Mains Independent Island Power Supply System with Fully Automatic Alternating Operation -- 15.3 Fully Automatic Electronic Control System -- 15.4 Fuel Distribution System -- 15.5 Lubrication Oil Distribution System -- 16 Special Features for Transmission System Power Supplies -- 16.1 Power Supply for Radio Link Apparatus -- 16.2 Power Supply for Ground Communication Stations for Telecommunications Satellites -- 16.3 Mains-Independent Power Supply Systems -- 17 Grounding and Potential Equalization -- 17.1 Protective Grounding -- 17.2 Functional Grounding -- 17.3 Functional and Protective Grounding -- 17.4 Selection and Design of Grounds and Grounding Systems -- 17.6 Protection against Overvoltage and Interference -- 18 Protective Measures -- 18.1 Protection by Disconnection or Indication -- 18.2 Protection without Disconnection or Indication.