1.Current limitation

At high short-circuit currents, HV Fuse-Links interrupt currents within several milliseconds. That means, the sinusoidal current does not reach its peak value and the HV Fuse-Links are current limiting devices. This is a significant advantage compared to mechanical switches whose contacts take longer to open and interrupt currents at natural zero. During this time, the peak shortcircuit current is able to freely develop its dynamic force. By using HV Fuse-Links, this surge current is limited within several ms to a fraction of its peak value and the design of the subsequent system can be reduced in terms of dynamic forces.

2.Switching voltage

So that HV Fuse-Links perform a current-limiting action, the shortcircuit current must be limited and reduced as it increases. This requires a switching voltage that exceeds the driving system voltage and forces the current to zero. This switching voltage must not exceed the specified permissible value of 2,2 times the peak value of the maximum rated voltage. YGS HV Fuse-Links meet this requirement.

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