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Optimizer3 measures and logs the following information:
• Breaker status OPEN/CLOSE
• Heater Current
• Open Average Velocity
• SF₆ Density
• Optimizer3 Line Voltage
• Close Average Velocity
• SF₆ Temperature
• Ambient Cabinet Temperature
• Open Operation Arcing Time
• SF₆ Dew Point
• Days since Last Operation
• Clearing Time
• Sensor Malfunction
• Restrike Occurrence
• Opening Travel Time
• Motor Run Time
• Contact Life; cumulative I²T or IT
• Closing Travel Time
• Motor Runs per Day
• Last Trip Coil Energized (TC1/ TC2)
• Total Operation Count
• Motor I²T
• Open Latch Time
• Non-Fault Operation Count
• Motor Total Run Time
• Close Latch Time
• Fault Operations Count
• Heater Status On/Off
The Optimizer3 continuously monitors the SF₆ attributes according to what sensors are used. Available sensors include:
1. Temperature-Compensated Pressure analog 4-20 mA.
2. Temperature-Compensated Pressure and Temperature (Model PSDP Digital Pressure Sensor).
3. SF₆ Density and Temperature (model DSDP Digital True Density Sensor).
4. SF₆ Density analog 4-20 mA.
5. SF₆ Dew Point Temperature analog 4-20 mA.
The Optimizer3 uses these measured attributes to calculate other user-defined properties in desired units. Optimizer3 calculates
density, pressure, trends, trend rates, changes in mass, etc. Most attributes can be compared to static alarm settings for assertion
when they go out-of-tolerance. Optimizer3 issues alarms via contacts, through DNP3.0 points, and via HTTPS web service, locally or
remotely.
The Optimizer3 Installation has been kept simple, with few connections required to the circuit breaker control circuits. Simple
electrical connections are made to trip and close circuits. Split-core Pickup Coils are attached to bushing CT secondary circuits. SF₆
gas sensors may be installed on the gas plumbing in several ways.
The Optimizer3 can be applied to any type of circuit breaker- vacuum, bulk oil, minimum oil, air blast, SF₆, live tank or dead tank.
Optimizer3 is useful on small sub-transmission circuit breakers to large EHV circuit breakers.
Contact wear models vary slightly by manufacturer and technology used. During set up, the manufacturer’s limits for contact wear
and timing should be used. If this information is not available, then IEEE C37.06-1989 standard should be used as a guide.