Automatic function with selectable fuse rating for single fuses and fuse panels

Automatic function with selectable fuse rating for single fuses and fuse panels

  • CN 101,563,821 B
  • Filed: 12/12/2007
  • Issued: 05/20/2015
  • Est. Priority Date: 12/20/2006
  • Status: Active Grant
First Claim
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1. a field programmable fuse (100), comprising:

  • Electrical fuse (110), for passing to load device (130) from the load current of external source via power output end (112) via power input end (116), whereinDescribed electrical fuse (110) comprises one or more field selectable trip value input (115), the trip value of described electrical fuse (110) is arranged according to the value being applied to described one or more field selectable trip value input (115), andWhen the amount of the described load current passing to described load device (130) exceedes the described trip value set by described electrical fuse (110), described electrical fuse (110) stops transmitting described load current to described load device (130), it is characterized in that, described electrical fuse (110) comprising;

    Variable diverter (230), for passing to described load device (130) the described load current from external source;

    Comparator (220), for measuring the voltage drop at described variable diverter (230) two ends;

    AndElectronic switch (210), for connecting and cutting off from described external source to the transmission of the described load current of described variable diverter (230), is characterized in thatWhen described variable diverter (230) two ends described voltage drop higher than or when being in fact predetermined threshold, described comparator (220) to described electronic switch (210) export cut-off signal,When receiving described cut-off signal from described comparator (220), described electronic switch (210) cuts off the described transmission of described load current,Described variable diverter (230) changes its resistance value according to the described trip value set by described electrical fuse (210), andProgramming connector (120), comprise the one or more programming pins (135) be operationally coupled with described one or more field selectable trip value inputs (115) of described electrical fuse (110), it is characterized in thatEach programming pin (135) is that scene can be arranged, so that take multiple electrical value one of them, and the described trip value of described electrical fuse (110) is by determining in the combination of the upper set described electrical value of described one or more programming pin (135)It is characterized in thatDescribed trip value inputs (115) is spaced from each other physically,Described load device (130) comprises load and selects plug-in strip (1110), make when inserting, one or more and the described load of described trip value inputs (115) selects plug-in strip (1110) to carry out physical contact, andDescribed trip value set by described electrical fuse (110) is based on the combination of the described trip value inputs (115) selecting plug-in strip (1110) to carry out contacting with described load.

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