SN EN 61284 : 1997

1 Scope<br>2 Normative references<br>3 Definitions<br>4 Requirements<br>4.1 General requirements<br>4.1.1 Design<br>4.1.2 Materials<br>4.1.3 Dimensions and tolerances<br>4.1.4 Protection against corrosion<br>4.1.5 Marking<br>4.1.6 Instructions for assembly<br>4.2 Requirements for specific fittings<br>4.2.1 Insulator set fittings and earth wire fittings<br>4.2.2 Suspension clamps<br>4.2.3 Fittings for jointing, terminating and repairing<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;conductor and earth wire<br>4.2.4 Insulator protective fittings<br>5 Heat cycle tests<br>5.1 Purpose<br>5.2 Joints<br>5.2.1 General<br>5.2.2 Service temperature<br>5.2.3 Classification for test purposes<br>5.3 Test specimens<br>5.3.1 General<br>5.3.2 Multi-range connectors<br>5.3.3 Preparation<br>5.3.4 Data on test specimens<br>5.4 Test arrangements<br>5.4.1 Test conditions<br>5.4.2 Reference conductor<br>5.4.3 Potential points<br>5.4.4 Installation of test loop<br>5.4.5 Measurements<br>5.5 Heat cycle test procedure<br>5.5.1 General<br>5.5.2 Joints of class A<br>5.5.3 Joints of class B<br>6 Corona and radio interference voltage (RIV) tests<br>6.1 Purpose<br>6.2 Description of test methods<br>6.3 General<br>6.4 Test circuit and instruments<br>6.5 Corona and RIV test procedures<br>6.6 Acceptance criteria<br>6.7 Test report<br>6.8 Voltage method<br>6.8.1 Adjacent conductors in a three-phase system<br>6.8.2 Test set-up and dimensions<br>6.8.3 Critical variant<br>6.8.4 Distance from wall (reflection plane,) w<br>6.8.5 Minimum clearance from adjacent live components<br>6.8.6 Metallic wall<br>6.9 voltage gradient method<br>6.9.1 Conductor voltage on three-phase system<br>6.9.2 Test set-up and dimensions<br>6.9.3 Test method<br>Annexes<br>A Typical joint types<br>B Typical test circuit - Class A Joints<br>C Typical test circuit - Class B joints<br>D Diagrammatic representation of heat cycle test<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sequence<br>E Mathematical acceptance criterion<br>F Examples of normative documents recommended for<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fitting materials<br>G Potential points<br>H Test voltage calibration device<br>ZA Normative references to international publications<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;with their corresponding European publications<br><br><br><br>

Applies to fittings used for overhead lines of nominal voltage above 45 KV. May be applied to fittings for overhead lines of lower nominal voltage and to similar fittings for substations.