Project Overview
Distribution underground switches project overview
Distribution Underground Switches
Evaluation of underground switch performance & resources
Identification of degradation and failure modes help utilities improve switch reliability and service life by informing improved functional specifications and improved inspection and maintenance practices.
Forensic reviews also inform utilities of issues that may arise with a particular switch make and model.
3002010153: Distribution Underground Switches; 2017 Update
3002012872: Distribution Underground Switches; 2018 Update
3002016383: Distribution Underground Switches; 2019 Update
3002018960: Distribution Underground Switches; 2020 Update
3002021660: Distribution Underground Switches; 2021 Update
3002024694: Distribution Underground Switches; 2022 Update
S&C Electric PMH12 Mark III Padmount Disconnect Switch
Condition assessment report S&C Electric PMH12 Mark III padmount disconnect switch
A.B Chance AIS-9 Padmount Disconnect Switch
Condition assessment report A.B Chance AIS-9 padmount disconnect switch
ABB MDS dead front switch
Condition assessment report ABB MDS dead front switch
G&W PV142 gas insulated switch
Equipment review report G&W PV142 three phase, four-way gas insulated switch
Cooper Type 'CI' Three-Phase Current Interrupting Switch
Failure analysis of Cooper type ‘CI’ three-phase current interrupting switch
Visovac Three-Phase Submersible Fault-Interrupting Switch
Failure analysis of VISOVAC® three-phase submersible fault-interrupting switch
Conclusion
Conclusions and future work
Guidebook
Outline for planned UG switch guidebook
Methods
Description of analysis methods and instrumentation