The current sensing Bay-O-Net fuse link is used in Bay-O-Net fuse holder to protect both distribution apparatus from damaging currents and distribution systems from failed apparatus. Usually it is used in series with ELSP current fuse or isolation link in transformer to get full range protective schedule.
The current sensing fuse link can sense secondary faults, excessive load currents and transformer faults, not like dual sensing fuse, it can't sense transformer oil temperature. Because the current sensing Bay-O-Net fuse link only monitors current, not temperature, they will expulse according to its Time-Current Curve (TCC), this is the origin of its other name, "expulsion fuse."
Below is the sheet you can read the difference between them directly:
|
Function |
Current-Sensing |
Dual-Sensing |
|
Secondary faults protection |
✔ |
✔ |
|
Excessive load protection |
✔ |
✔ |
|
Transformer internal faults protection |
✔ |
✔ |
|
Oil temperature sensing |
✘ |
✔ |
|
Heat aging protection |
✘ |
✔ |
|
High environmental temperature protection |
✘ |
✔ |
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