Arguably the most timely release of the year, given the SF6 carbon tax legislation and generally heightened SF6 gas leak management awareness, the OPTImizer2 is an On-Line Circuit Breaker Performance and SF6 Gas Density Monitor that is used for implementing predictive maintenance, maintenance deferral, just-in-time (JIT) maintenance and environmental protection. This intelligent electronic device (IED) monitors the condition of the main contacts, mechanism and
dielectric and logs the following information during CB operation:
- Trip Time (mS) (also known as Opening Time)
- Arc duration (mS) (phase segregated)
- Clearing Time (mS) (also known as Interrupting Time)
- Cumulative I2 x T or I x T on the main contacts (phase segregated) from arcing
- Restrike Occurrence (phase segregated)
- Mechanism opening travel time (mS)
- Mechanism closing travel time (mS)
- Operation Counts
Arguably the most timely release of the year, given the SF6 carbon tax legislation and generally heightened SF6 gas leak management awareness, the OPTImizer2 is an On-Line Circuit Breaker Performance and SF6 Gas Density Monitor that is used for implementing predictive maintenance, maintenance deferral, just-in-time (JIT) maintenance and environmental protection. This intelligent electronic device (IED) monitors the condition of the main contacts, mechanism and dielectric and logs the following information during CB operation:
- Trip Time (mS) (also known as Opening Time)
- Arc duration (mS) (phase segregated)
- Clearing Time (mS) (also known as Interrupting Time)
- Cumulative I2 x T or I x T on the main contacts (phase segregated) from arcing
- Restrike Occurrence (phase segregated)
- Mechanism opening travel time (mS)
- Mechanism closing travel time (mS)
- Operation Counts
The OPTImizer2 continuously monitors SF6 (Sulphur hexafluoride) gas density and temperature, and then calculates gas pressure, density and pressure trend rates and changes in mass. The present density, pressure, mass, density and pressure trend rates, and temperature are recorded in the history log at regular intervals. There are alarms for low density and high density or pressure trend rate.
In addition to alarming of anomalies by LEDs and contact alarms, digital information is available for retrieval through a DNP3.0 network or a web browser. The ability to provide historical data, in addition to alarming at set points, makes the OPTImizer2 ideal for reliability centred maintenance (RCM) programs.
The OPTImizer2 has passed rigorous standards for survivability in the electric utility substation environment. It may be mounted directly in the circuit breaker cabinet, or in the control house. A minimal interface to the breaker control and secondary current circuits is used, employing snap-on CT pickup coils and two parallel wiring connections. This minimal interface to the power circuit breaker makes the OPTImizer2 ideal for both retrofit and new applications. One, two or three SF6 gas density sensors may be used.
The OPTImizer2 is specifically designed for use on gas (SF6) circuit breakers, but can be used on oil and vacuum breakers.
The wear models used in the OPTImizer2 are valid for any voltage class and correspond to ANSI / IEEE C37.06-1989
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