M54128数据手册MinebeaMitsumi中文资料规格书

描述 Description

DESCRIPTION
The M54128 is a semiconductor integrated circuit designed for high-speed type earth leakage breakers. This lC includes leakage and abnormal voltage detecting functions.FEATURES
● lmprovement of ability against unwanted tripping due to Iightning-surge.
  
• Adopt the two times counting system.
  
• lmprovement of ability against needless action due to lightning impulse.
● lt is a possible that cope with lEC owing to mode change.
  
• Adopt the 1.5 times counting system.
● High input impedance :
  
• Filter circuit can be formed with externally attached C/R.
  
• lmprovement of ability against needless action due to high frequency and high harmonics.
● High input sensitivity : VT = 6.5mVrms
● Abnormal voltage detecting (neutral conductor open-phase protection) function :
  
• Neutral conductor open-phase protection at single-phase three wire system
  
• ln case of no use this function, stop this function and reduction of circuit current, possible.
● Low voltage operation : 7 to12V (conventional Mitsubishi lCs : 12 to 20V)
● Low current dissipation :
  
• In stand-by condition : 820µA typical (Vs = 9V, Ta = 25°C)
  
• When SCR is ON : 740µA typical (Vs = 9V, Ta = 25°C)
● Highly stable design : Employment of circuits of which characteristics fluctuations resulting from changes in supply voltage/ambient temperature are small.APPLICATION
  Earth leakage breaker

特性 Features

● lmprovement of ability against unwanted tripping due to Iightning-surge.
  
• Adopt the two times counting system.
  
• lmprovement of ability against needless action due to lightning impulse.
● lt is a possible that cope with lEC owing to mode change.
  
• Adopt the 1.5 times counting system.
● High input impedance :
  
• Filter circuit can be formed with externally attached C/R.
  
• lmprovement of ability against needless action due to high frequency and high harmonics.
● High input sensitivity : VT = 6.5mVrms
● Abnormal voltage detecting (neutral conductor open-phase protection) function :
  
• Neutral conductor open-phase protection at single-phase three wire system
  
• ln case of no use this function, stop this function and reduction of circuit current, possible.
● Low voltage operation : 7 to12V (conventional Mitsubishi lCs : 12 to 20V)
● Low current dissipation :
  
• In stand-by condition : 820µA typical (Vs = 9V, Ta = 25°C)
  
• When SCR is ON : 740µA typical (Vs = 9V, Ta = 25°C)
● Highly stable design : Employment of circuits of which characteristics fluctuations resulting from changes in supply voltage/ambient temperature are small.APPLICATION
  Earth leakage breaker