how to improve the success rate of meter reading methods and measures. Tenth, eleventh chapter explains in electronic energy meter performance testing in confusing error problem.
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.
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