000			04184cam a22002777a 4500
999			_c311 _d311
003			OSt
005			20210127131832.0
008			050527s2006 ne b 000 0 eng d
010			_a 2005928301
020			_a9780750663977
035			_a(OCoLC)ocm61767926
040			_aBUL _cBUL _dBUL _dBUL _dBUL
082	0	0	_a621.319 _2FIRST EDITION _bHEW
245	0	0	_aTourism business frontiers : _bconsumers, products and industry / _cedited by Dimitrios Buhalis and Carlos Costa.
260			_aAmsterdam ; _aBoston : _bElsevier Butterworth-Heinemann, _c2006.
300			_axix, 273 p. : _bill. ; _c24 cm.
500			_aContents 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
504			_aInclude index: P. 274-277
650		0	_aTourism.
650		0	_aTourism _xForecasting.
700	1		_aBuhalis, Dimitrios.
700	1		_aCosta, Carlos, _d1964-
856	4	2	_3Publisher description
906			_a7 _d2 _f20
942			_2ddc _cBO _eFIRST EDITION _h621.319 _i1 _kHEW _m621.319HEW