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Fuse Technology

Current limitation

The energy let through of the protective device determines the necessary strength of the protected installation and components.

A fuse interrupts a short circuit current very quickly. Consequently the energy let through (I2t) of a fuse is very low.

A fuse 100A, 20kArms, 415V reduces an initial fault current of 4.000.000 A/S2 to 46.000 A/S2 This ratio is indicated in the picture below.

An example:

The volume illustrates the impact of the limitation feature of a fuse. The benefit is that smaller components can be used downstream of the fuse resulting in... COMPACT INSTALLATIONS

The volume illustrates the impact of the limitation feature of a fuse. The benefit is that smaller components can be used downstream of the fuse resulting in...

COMPACT INSTALLATIONS

 

 

LINKS

General Questions

Fuses

Low and moderate overcurrents

Short circuit currents

MV-Fuses


Control of energy

Current limitation

Restoration after a fault

Recycling of fuse links

Single or three phase interruption

Discrimination

Co-ordination for motorstarters

PDFs

HRC Fuses - Major Design components for Low Voltage Distribution Systems
This document will give you a number of technical reasons why you should use HBC-fuses for the protection of electrical switchgear and installations.

 

 

 
       
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