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As of December 15, 2006
Existing 15kVA transformer:
- Gather data relating fault currents to phase voltage
- Determine relation between fault and load currents
- Obtain fuse elements capable of protecting transformer
Shorting mechanism:
- Detailed fault current modeling
- Thermal analysis for conductor sizing
- Size fuses to clear fault within 2-3 cycles
- Safe enclosure designed for fuse bank
Test bench design:
- Obtain dimensions of transformer
- Bench must be functional and aesthetically pleasing
Final testing with 55kVA transformer:
- Fault signature not as apparent in phase quantities
- Filtering with MathCAD relay model necessary to determine fault signature
- Results used to design special differential protection scheme
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