FOREWORD
1 General
   1.1 Scope
   1.2 Object
2 Normative references
3 Terms and definitions
4 Classification of electroheating equipment according
   to frequency bands
   4.1 General
   4.2 Direct current equipment
   4.3 Low-frequency equipment
   4.4 Mains-frequency equipment
   4.5 Medium-frequency equipment
   4.6 High-frequency equipment
   4.7 Microwave equipment
5 General requirements
   5.1 Electroheating equipment
   5.2 Electric equipment of electroheating installations
   5.3 Electrostatic charges
   5.4 Electromagnetic hazards
   5.5 Ionizing radiation
   5.6 Liquid cooling
6 Isolation and switching
   6.1 General
   6.2 Switching-off of special circuits
   6.3 Switching at high voltage levels
7 Connection to the supply network and internal connections
   7.1 General requirements
   7.2 Fixed connection
   7.3 Removable connection and flexible conductors
8 Protection against electric shock
   8.1 General
   8.2 Direct contact - special measures
   8.3 Indirect contact - special measures
   8.4 Recommendations for the user's operating instructions
9 Protection against overcurrent and overvoltage
10 Equipotential bonding
   10.1 General
   10.2 Protective bonding system
        10.2.1 General
        10.2.2 Protective conductors
        10.2.3 Continuity of the protective bonding system
        10.2.4 Exclusion of switching devices from the
               protective bonding system
        10.2.5 Parts that need not be connected to the
               protective bonding system
        10.2.6 Interruption of the protective bonding system
        10.2.7 Protective conductor connecting points
        10.2.8 Protective bonding in case the earth leakage
               current exceeds 10 mA a.c. or d.c
   10.3 Functional bonding
   10.4 Prohibition of the use of earth as part of an
        active circuit
11 Control circuits and control functions
   11.1 Control circuits
   11.2 Earthing of control circuits
   11.3 Control functions
        11.3.1 Start and stop functions
        11.3.2 Operating modes
        11.3.3 Suspension of safety functions and/or
               protective measures
        11.3.4 Emergency operations
        11.3.5 Cableless control
   11.4 Control functions in the event of failure
12 Protection against thermal influences
13 Protection against other risks
14 Marking, labelling and technical documentation
   14.1 Marking
   14.2 Warning marking
   14.3 Labelling
   14.4 Technical documentation
15 Instructions on commissioning, inspection, operation and
   maintenance
   15.1 General requirements
   15.2 Information on commissioning and inspection
   15.3 Operating instructions
   15.4 Instructions for maintenance work
Bibliography