There are many ways to maximize the useful life of electrical systems containing medium voltage circuit breakers and switchgear :
- Routine Maintenance
- Refurbishment of devices
- Conversion of circuit breakers
- Roll-in replacement circuit breakers
- Retrofill circuit breaker
- Replacement of complete switchgear
Please contact your Schneider Canada Services representative to discuss of the solutions available depending on your needs.
We can conduct a survey to determine the exact condition of your switchgear and provide technical and economic comparison between the different available solutions.
Definitions
- Routine Maintenance
Carrying out procedures recommended by equipment manufacturer at specified intervals
- Refurbishment
Inspecting, cleaning devices and replacing worn or defective parts ( when necessary )
- Conversion of circuit breaker
Replacing obsolete technology / parts while retaining existing mounting and connecting mechanisms
- Roll-in replacement circuit breakers
Complete new circuit breaker specifically designed to fit existing mounting, racking and connecting
provisions in the switchgear
- Retrofill circuit breaker
Complete new circuit breaker AND mounting, racking and connecting mechanisms and parts to be built into
existing switchgear.
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Advantages
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Disadvantages
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Routine Maintenance
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- Relies on parts availability
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Refurbishment
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- Unknown Life extension
- Retain old technology
- Parts availability
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Conversion ( Retrofit )
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- Questionable parts
availability for existing
truck, bushing, fingers
- Changes in current
carrying parts require
re-testing
- Increased Downtime
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Roll-In Replacement
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- All new breaker, SF6 or vacuum
- Lower Maintenance
- Long term solution
- Guaranteed parts availability
- New warranty
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Retrofill
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- All new breaker, SF6 or vacuum
- Lower Maintenance
- Long term solution
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- Bus conversion required, long downtime for change
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New Switchgear
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- High capital cost
- Long shutdown
- Temporary Service required for continuing operation
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Download : Medium Voltage Breaking Techniques
