Product unique feature
    As a protective device to oil-filled transformer  with an oil
storage tank ,QJ4-50C type gas relay is installed in the connect-
ing  pipe  between  the  transformer oil tank and  the oil  storage
tand.
Technical parameter
  Relay pipeline diameter:QJ4-50C ф50mm
  Operating temperature：-30℃+95℃
  (Light gas) signal contact movement gas volume：250-300cm3
  Contact rated capacity：220V   0.3A
  Insulation strength: During two groups of posts exerts the voltage 2,000 volts 1 minute
  The contact electronic contact post exerts the voltage 2,000 volts 1 minute
  The contact post exerts the voltage 2,000 volts 1 minute
  Sealing property: In the relay fills the transformer oil.
  As soon as pressurizes in the normal temperature: 200Kpa continues 20 minutes not to have the leakage phenomenon.
  Earthquake resistance ability: When vibration frequency (sine wave)4-20Hz, acceleration 4g the relay moves not by mistake.
External dimensions