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IEC 60269-2 Low-voltage fuses

Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) – Examples of standardized systems of fuses A to K

This standard gives the supplementary demands for fuses for use by authorized persons ,and are used in installations where the fuse links are approachable to and may be exchanged by authorized persons only. This standard is split into fuse systems each dealing with a particular example of standardized fuses for use by authorized person.

Fuse System A       : Fuses with fuse links with blade contacts NH fuse system.

Fuse system B       : Fuses with striker fuse links with blade contacts NH fuse system

Fuse system C       : Fuse rails NH fuse system

Fuse System D       : Fuse bases for busbar mounting NH fuse system

Fuse System E       : Fuses with fuse links for bolted connections BS bolted fuse system

Fuse System F        : Fuses with fuse links having cylindrical contact caps NF cylindrical fuse system

Fuse System G       : Fuses with fuse links with offset blade contacts BS clip in fuse system

Fuse System H       : Fuses with fuse links having gD and gN characteristic class J and class time delay and non time
delay fuse types

Fuse System I        : gU fuse links with wedge tightening contacts br Fuse system J Fuses with fuse links having gD
class CC and gN class CC characteristics class CC time delay and non time delay fuse types

Fuse system J        : Fuses with fuse links having gD class CC and gN class CC characteristics class CC time delay
and non time delay fuse types

Fuse System K       : K gK fuse links with blade for bolted connections High fuse link ratings from 1 250 A up to 4
800 A master fuse links

CEI 60269-2-1
Section1 NH System
Section2 BS 88
Section 3 10×38,14×51,22×58
Section 4 BS 88 Offset blade
Section 5 UL 248 Class J & class L

 

Major tests to be performed in IEC 60269-2

  1. Temperature rise & power dissipation test
  2. Non-fusing & Fusing test
  3. Verification of rated current test
  4. Overload test
  5. Verification of Time Current Characteristics and Gates

 

 

 

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