LV 123, 2009-11, Page 3
Contents
Foreword .........................................................................................................................6
1 Scope.........................................................................................................................6
2 Normative references...............................................................................................7
3 Abbreviations, acronyms (short names), definitions & symbols .........................7
3.1 Terms ............................................................................................................................ 7
3.2 Abbreviations ............................................................................................................... 9
4 Regulated substances and recyclability...............................................................10
5 Overview of HV system ..........................................................................................10
5.1 HV system................................................................................................................... 10
5.2 HV components.......................................................................................................... 11
6 Electrical operating ranges of HV system............................................................13
6.1 Equipment and voltage class .................................................................................... 13
6.2 HV operating status ................................................................................................... 14
6.3 Voltage ranges............................................................................................................ 14
6.3.1 Voltage levels..........................................................................................................................14
6.3.2 Operating voltages..................................................................................................................15
6.3.2.1 Overview of operating voltages...........................................................................................15
6.3.2.2 Range of unlimited operating capability ..............................................................................16
6.3.2.3 Range of upper limited operating capability........................................................................16
6.3.2.4 Range of lower limited operating capability ........................................................................16
6.3.2.5 Range of highly limited operating capability........................................................................16
6.3.3 Dynamic parameters...............................................................................................................17
6.3.3.1 Overview of dynamic parameters........................................................................................17
6.3.3.2 Voltage dynamics................................................................................................................17
6.3.3.3 Voltage ripple ......................................................................................................................18
6.3.4 Voltage deviations ..................................................................................................................19
6.3.4.1 Overview of voltage deviations ...........................................................................................19
6.3.4.2 Overvoltage .........................................................................................................................19
6.3.4.3 Overvoltage above the limit voltage....................................................................................19
6.3.4.4 Undervoltage.......................................................................................................................20
6.3.4.5 Load dump ..........................................................................................................................20
6.3.5 Summary of voltage ranges....................................................................................................20
6.3.6 Design according to test voltages...........................................................................................21
6.3.7 Voltage offset..........................................................................................................................21
6.4 Interactions between LV and HV system .................................................................. 22
6.5 Reverse polarity protection for HV contacting......................................................... 22
7 Requirements for electrical characteristics and HV safety.................................22
7.1 Marking ....................................................................................................................... 22
7.2 Protection against direct contact.............................................................................. 24
7.2.1 Protection against direct contact by covers ............................................................................24
7.2.2 Protection against direct contact by solid insulating materials ...............................................25
7.2.3 Protection against direct contact by "Complex disassembly".................................................26
7.3 Potential equalization................................................................................................. 26
7.4 Overcurrent protection (electrical energy storage).................................................. 28
7.5 Short circuit ................................................................................................................ 29
7.6 Potential separation of HV system and LV powernet .............................................. 30
Copyright AUDI AG, BMW AG, Daimler AG, Dr. Ing. h. c. F. Porsche AG, Volkswagen AG 2009
Uncontrolled copy when printed (intergrative department: Han Tracy, 2010-11-08)
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