NF EN 60646 : 2003

1 Scope and object
2 Normative references
3 Definitions
4 Type of test and general conditions of tests
    4.1 General conditions for performance of tests
    4.2 List of tests
    4.3 Conditions for performing the tests
5 Methods for tests and measurements
    5.1 Electrical withstand test of the inductor assembly
    5.2 Pressure test of cooling water circuits
    5.3 Flow test of cooling water circuits
    5.4 Measurement of temperature rise of the coolant
    5.5 Determination of power P1 and power factor cos Q1
          of the furnace power circuit
    5.6 Determination of holding power Ph
    5.7 Determination of specific energy consumption, melting
          and/or superheating rate
    5.8 Measurement of the temperature of furnace structural
          components
Annex A Explanatory diagrams for symbols and definitions
          relating to the furnace power circuit
Annex ZA Normative references to international publications
          with their corresponding European publications

Applicable to electrical installations consisting of industrial crucible induction furnaces for melting, holding and superheating. Intended to standardize test procedures for determination of the essential parameters and technical characteristics of electroheat installations consisting of the type of furnaces indicated above.