1005 Series

Robust and reliable analog and digitally integrated instruments for measurement of temperature with up to 6 contacts for control of transformer temperature. These products are suitable for all types of transformers where the accuracy required is 1% of FSD

General Features:

  • Fully sealed liquid expansion system provides self-powered indication and operation and does not require any trimming or other periodic adjustments.
  • Instruments are fully compensated for ambient temperature.
  • WTIs have a built in Thermal imaging system to simulate transformer’s hot spot indication.
  • WTIs are provided with gradient adjustment through a shunt for CT secondary input current.
  • Optional embedded PT-100 sensors (up to 2 sensors) in the sensing bulb of the local OTI / WTI provide for a master indication at control room and Scada compatibility
  • Instrument cases are aluminum die casted and polyester powder coated with standard ingress protection of IP55 and Corrosion protection up to 500 Hours of neutral salt spray
  • Maximum pointer facility is provided and can be reset from outside.
  • External Switch test knob is provided to test switch function at the time of commissioning.
  • All switch contacts are potential free micro switches.