PD IEC/TR 60787:2007

1 Scope and object
2 Normative references
3 Features of current limitation
4 Fuse-link time-current characteristics
5 Coordination
6 Other ratings and requirements
  6.1 Rated voltage
  6.2 Rated maximum breaking current
  6.3 Rated minimum breaking current and class:
      6.3.1 Fuse-links used in combination or
            association with other switching
            devices
      6.3.2 Fuse-links used as the only protection
            on the HV side of the transformer
      6.3.3 Fuse-links used to provide short-circuit
            protection in combination with expulsion
            fuse-links
7 Selection of rated currents of fuse-links for
  transformer circuit applications

Describes criteria for coordination of high-voltage fuses with other circuit components in transformer applications and to give guidance for the selection of fuse-links with particular reference to their time-current characteristics and ratings.

The object of this Technical Report is to specify criteria for coordination of high-voltage fuses with other circuit components in transformer applications and to give guidance for the selection of fuse-links with particular reference to their time-current characteristics and ratings. This technical report cancels and replaces International Standard IEC 60787, published in 1983, and constitutes a technical revision.