DULUTH, Minn. — The fatal explosion at the United Taconite plant in Forbes last fall resulted from management’s failure to make sure that all electrical circuits had properly maintained overload ...

Electric drives require effective protection against overloads and short circuits. Both phenomena cause motor disruption and create a risk of damage to the motor. This could lead to a potentially ...

If a motor isn't adequately protected, a short circuit will likely result in premature replacement. Then there's the problem of nuisance tripping upon initial start-up because the magnetic setting of ...

The objective of protective relays and protective schemes is to protect electrical equipment such as transformers, lines, cables, bus bars, etc. during abnormal system conditions. Hence, protective ...

What distinguishes a medium voltage circuit breaker from other types is not the enclosure or operating mechanism, but the method of arc extinction. The interruption medium governs arc energy, ...

The rapid expansion of high voltage direct current (HVDC) grids, driven by the massive integration of renewable energy sources, has underscored the critical role of DC circuit breakers (DCCBs) and ...

It is remarkable that modern hydraulic breakers provide a useful life measured in years since under normal operation one piece of metal attacks another piece of metal up to 1,000 times or more per ...

In each of the four figures in this appendix, the bus work or node is depicted as a solid line. The squares represent circuit breakers that open the electrical circuit under load or short-circuit ...

The fatal explosion at the United Taconite plant in Forbes last fall resulted from management’s failure to make sure that all electrical circuits had properly maintained overload protection, according ...