IEC 60644:2009

FOREWORD
1 Scope
2 Normative references
3 Fuse-link time-current characteristics
4 K factor
5 Withstand requirements
6 Withstand tests
  6.1 General
  6.2 Test sequence No. 1
  6.3 Test sequence No. 2
  6.4 Interpretation of the test results
7 Information to be given to the user
8 Selection of fuse-links for motor circuit applications
  and correlation of fuse-link characteristics with
  those of other components of the circuit
  8.1 Selection of fuse-links
  8.2 Co-ordination with other circuit components
Bibliography

IEC 60644:2009 applies primarily to fuse-links used with motors started direct-on-line on alternating current systems of 50 Hz and 60 Hz. Standardizes time-current characteristics to formulate additional pulse withstand requirements regarding testing and to give guidance for the selection of fuse-links to be used with motors. Note: Fuse-links according to this specification should comply with the requirements of IEC 60282-1. The main changes with regard to the previous edition concern the following:
- update of the normative references;
- renewal of the figures.