@book{311, author = {Buhalis, Dimitrios.}, title = {Tourism business frontiers :}, publisher = {Elsevier Butterworth-Heinemann,}, year = {2006.}, address = {Amsterdam ;}, note = {Contents Perface.......................ix 1 Need for protection 1.1 Need for protective apparatus 1.2 Basic requirements of protection 1.3 Basic components of protection 1.4 Summary 2 Faults, types and effects 2.1 The developments of simple distribution systems 2.2 Fault types and their effects 3 Simple calculation of shart- circuit currents 3.1 Introduction 3.2 Revision of basic formulae 3.3 Calculation of short-circuit MVA 3.4 Useful formulae 3.5 Cable information, etc. 4 System earthing 4.1 Introduction 4.2 Earthing devices 4.3 Evaluation of earthing methods 4.4 Effect of electric shock on human beings 5 Fuses 5.1 Historical 5.2 Rewireable type 5.3 Cartridge type 5.4 Operation characteristics, etc. 6 Instrument transformers 6.1 Purpose 6.2 Basic theory of operation 6.3 Voltage transformers 6.4 Current transformers, etc. 7 Circuit breakers 7.1 Introduction 7.2 Protective relay- circuit breaker combination 7.3 Purpose of circuit breakers{switchgear}, etc. 8 Tripping batteries 8.1 Tripping batteries 8.2 Construction of battery changers 8.3 Maintenance guide 8.4 Trip circuit supervision, etc. 9 Relays 9.1 Introduction 9.2 Principle of the construction and operation of the electromechanical 9.3 IDMTL relay 9.4 Factors influencing choice of plug setting, etc. 10 Coordination by time grading 10.1 Protection design parameters on medium and low-voltage networks 10.2 Sensitive earth fault protection 11 Low-voltage networks 11.1 Introduction 11.2 Air circuit breakers 11.3 Moulded cases circuit breakers 11.4 Application and selective coordination 11.5 Earth leakage protection 12 Mine underground distribution protection 12.1 General 12.2 Earth--leakage protection 12.3 Pilot wire monitor 12.4 Earth fault lockout 12.5 Neutral earthing resistor monitor{NERM} 13 Principles of unit protection 13.1 Protective relay systems 13.2 Main or unit protection 13.3 Back-up protection, etc. 14 feeder protection cable feeders and overhead line 14.1 Introduction 14.2 Translay 14.3 Solkor protection 14.4 Distance protection 15 Transformer protection 15.1 Winding polarity 15.2 Transformer connections 15.3 Transformer magnetizing characteristics 15.4 In-rush current, etc. 16 Switchgear{busbar} protection 16.1 Importance of busbars 16.2 Busbar protection 16.3 The requirements for good protection 16.4 Busbar protection types 17 Motor protection relays 17.1 Introduction 17.2 Early motor protection relays 17.3 Steady-state temperature rise 17.4 Thermal time constant, etc. 18 Generator protection 18.1 Introduction 18.2 Stator earthing and earth faults 18.3 Overload protection 18.4 Overvoltage protection,etc. 19 Management of protection 19.1 Management of protection 19.2 Schedule A 19.3 Schedule B 19.4 Test sheets } }