AS 2005.21.1 pdf download – Low voltage fuses—Fuses with enclosed fuse–links Part 21.1: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application)— Standardized fuse systems— Fuses with fuse–links with blade contacts
1.1 SCOPE AND APPLICATION.
1.1.1 Scope. The supplementary requirements in this Standard cover fuses with fuse-links having blade contacts intended to be replaced by means of a device, for example a replacement handle, which complies with the dimensions specified in Figures 2 and 3. Such fuses have rated currents from 16 A up to and including 1250 A and rated voltages up to and including 660 V a.c. or 440 V d.c.
1.1.2 Application. Standardized fuse systems for use by authorized persons which comply with this Standard shall also comply with all clauses of AS 2005.10 and AS 2005.20, unless otherwise specified herein. NOTE: The clause numbers and table numbers in this Standard are the same as those used in AS 2005.10 and AS 2005.20. Additional tables herein are numbered 10 to 17 to distinguish them from the table numbers in AS 2005.10 and AS 2005.20. Sections and Clauses of AS 2005.10 and AS 2005.20 not amended herein are not repeated in this Standard.
1.3 REFERENCED DOCUMENTS. The documents below are referred to in this Standard.
1110 ISO metric hexagon precision bolts and screws
1939 Classification of degrees of protection provided by enclosures of electrical equipment
2005 Low voltage fuses–Fuses with enclosed fuse-links
2005.10 Part 10: General requirements
2005.20 Part 20: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial applications)–Common requirements
3000 SAA Wiring Rules
IEC 269 Low-voltage fuses
269-2-1 Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) Sections I to III
5.2 RATED VOLTAGE. For a.c. the standard values of rated voltage are 500 V and 660 V. For d.c. the rated voltage is 440 V.
5.3.1 Rated current of the fuse-link. For each size the maximum rated currents are given in Table 10. These values depend upon the utilization categories and rated voltages.
5.3.2 Rated current of the fuse-holder. The rated current for the different sizes of the fuse-bases is given in Table 11.
5.5 RATED POWER DISSIPATION OF A FUSE-LINK AND RATED POWER ACCEPTANCE OF A FUSE-HOLDER. The maximum values of rated power dissipation for the different sizes of fuse-links are specified in Table 10. The values apply to the maximum rated currents of the fuse-links. The values of rated power acceptance of fuse-bases are given in Table 11.