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Transformer Advantage CT/LTC


Oil, Winding & LTC Temperature Monitor for Oil-Filled Transformers
Extra channel for main tank or ambient temperature.

The Transformer Advantage is a precision temperature monitor for liquid immersed power and distribution transformers. It is rugged, fully electronic and field configurable. With Transformer Advantage, users can extend transformer life, utilize maximum capacity and reduce maintenance costs.

Seven models in the Advantage line offer a range of functions and configurations. All use an accurate and stable platinum temperature sensor (RTD) to precisely measure critical liquid temperatures. Probe options fit most popular thermowells, or magnetically mount on units without wells.  Setpoint relays can activate alarms or multiple stages of cooling at different temperatures. A sequencing function equalizes run time between cooling stages. The fan timer can exercise fans at a preset time each day.

Advantage CT/LTC
This top end model in the Advantage line combines the functions of the CT and LTC models in one unit. For a Load Tap Changer with a thermowell, the main tank (top oil) probe is used as a reference for both calculated winding temperature and Load Tap Changer temperature differential. The third temperature input is available to monitor ambient or bottom oil. For an LTC without a thermowell, this input is used with an additional magnetic probe on the main tank as an LTC reference.

  • Three  RTD inputs.
  • One to three winding current inputs.
  • Winding temperature calculated per IEEE guide.
  • Up to 12 relay outputs for cooling and alarms.
  • Analog retransmits.
  • Cooling fan readback.
  • Auxiliary inputs.
  • Loss of life (insulation aging).
  • DNP-3 & Modbus protocols.

Advantage CT/LTC part numbers begin with G8E or G8L; older models with G8R.

Transf-Advantage-Datasheet         Advantage Simplified Selector

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Setpoint Relays
First RTD Probe
Order up to 3 probes in the two probe fields.
Second RTD Probe
CT Input
Enter 2 digit code for full scale % of 10 amps. Example 50=5 amps, 10=1 amp. Enter 00 for 10 amps. Enter SA for >10 amps (specify value on order). Enter SP for <1 amp or special (specify on order).
SCADA Outputs
Thermowell Probe Adapters
Threaded adapter & tip sleeve for each thermowell probe ordered.
Input Options
Miscellaneous Options
3 digits required in part number. If no options needed, select both X & XX. If more than 3 needed, select SXX and list on order.
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