Electronic Temperature Monitor

ETM Electronic Temperature Monitor accepts Pt100 RTD resistance input from sensor mounted on transformer tank and indicates the Top Oil Temperature & Winding temperature of the transformer. Winding Temperature of the oil-immersed transformers is calculated from temperature gradient based on CT Secondary current corresponding to the load current and the top oil temperature. The CT secondary current, temperature gradient and thermal time constant settings are all user configurable. ETM also provides 2 SPDT relay contact outputs for Oil temperature & 2 or 4 SPDT relay contact outputs for winding temperature. Optionally, analog 4-20mA dc outputs and RS 485 ports can also be provided. ETM has a simple user friendly front panel configuration. ETM is field mountable with a rugged IP55 water proof enclosure
a cSingle sensor and instrument to measure Oil temperature and Winding temperature.
a cSimple user friendly front panel configuration
a cInput : Pt 100 RTD, 3 Wire
a c2 SPDT relay contact outputs for Oil temperature & 2 or 4 SPDT relay contact outputs for winding temperature
a cUser selectable Alarm / Trip /Fan settings
a cThe CT secondary current, temperature gradient and thermal time constant settings are all user configurable
a cTwo 4 a 20mA Analog o/p for Remote indication (Optional)
a cRS 485 Digital communications port (Optional)
a cUniversal Power Supply 90-260V AC/DC
a cField Mountable IP55 Enclosure
a cOperates a relay with a SPDT contact when the inputs exceed the setting.