2013年10月14日星期一

Open current zero crossing, which can effectively reduce the over-voltage and surge current impulses

Low-voltage contactors are the most widely used one of the electrical equipment , but the existing electrical contacts , the average life expectancy is only its mechanical life of 1 /10 to 1 /20. In the electricity sector, power switching capacitor contactor normally have to bear the huge inrush current and over- voltage shock , causing it  circuit breakers  to damage. Open / close as selected by the voltage / current zero crossing , which can effectively reduce the over-voltage and surge current shock , and extend the life of the electrical contacts , improve  electric transformer  and power quality , especially for power capacitors, motors and other conditions , if the split-phase adaptive control can effectively avoid the transient overvoltage and surge . Split-phase adaptive control of the basic concepts of adaptive control of the basic split-phase voltage zero crossing points are closed , current zero when disconnected. Its core is the use of  Voltage stabilizer  fast sampling , analysis and calculation and data storage advantages , give full consideration to a variety of mechanical switches to accept instructions from the actuator ( energized ) the action is completed ( contact closure or vice versa ) of the time, so contactor contacts are voltage zero crossing is closed off at current zero , to avoid transient over- voltage and surge current pair of contacts hazards , reducing contact wear.

没有评论:

发表评论