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Eliminating the hazardous arc flashes associated with separating-contact mechanical breakers, hybrid circuit breakers reduce fault currents and their damaging mechanical forces and increase contact life.
Diversified Technologies, Inc. (DTI) has introduced a hybrid medium-voltage direct current (MVDC) circuit breaker that combines mechanical contacts and solid state switches to permit the safe use DC for data centers. Rated from 5 to 20 kV, the DTI Hybrid MVDC Circuit Breaker combines the low steady state losses of mechanical contacts with the arc-less and low maintenance aspects of semi-conductor switches to open under full voltage and current without a zero crossing. Eliminating the hazardous arc flashes associated with separating-contact mechanical breakers, hybrid circuit breakers reduce fault currents and their damaging mechanical forces and increase contact life.
Calculated to last for > 1 million cycles, the DTI Hybrid MVDC Circuit Breaker operates in a three step process: continuous high current through low-loss metal-metal conduction, momentary current transfer to semiconductor switches and contact separation, and commanded switch interruption and energy transfer to dissipative devices. With the solid state breaker only conduct-ing through fault conditions, it allows rapid fault isolation and recovery.
The DTI Hybrid MVDC Circuit Breaker is priced from $10,000 and up depending upon voltage and current ratings.
More information about the DTI Hybrid MVDC Circuit Breaker