Method for detecting a phase missing in a unit of autotransformador 12 pulses rectifier three-phase (atru) method to detect a falling supply of entry into a grinding unit autotransformador twelve pulses three-phase (atru)Apparatus for detecting a phase missing in a unit of autotransformador 12 pulses rectifier three-phase (atru) and apparatus for detecting a fall of supply of entry into a grinding unit autotransformador twelve pulses three-phase (atru)

摘要

Summary "method to detect a phase missing in a unit of autotransformador 12 pulses rectifier three-phase (atru) method to detect a falling supply of entry into a grinding unit autotransformador twelve pulses three-phase (atru)Apparatus for detecting a phase missing in a unit of autotransformador 12 pulses rectifier three-phase (atru) and apparatus for detecting a fall of supply of entry into a grinding unit autotransformador twelve pulses three-phase (atru) ".A method and apparatus for detecting a phase missing in a grinding unit autotransformador twelve pulses three-phase which in use receives a three-phase input and provides an output at which a voltage rated DC common mode is printed.At least one of the frequency and the amplitude of the common mode voltage is monitored in order to determine if there is a phase missing in the entry. The frequency and / or the amplitude of the voltage common mode can also be monitored in order to determine if there is a loss of input voltage. 1 / 1