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Modeland Transformer Replacement, Canada

On behalf of Hydro One Networks Inc we supported their project in Sarnia, Ontario, where the Power Transformer T04 was replaced with a new 100MVA 230kV/22kV/22kV Transformer.

Bullet Replace the existing T04 Transformer and LV buswork
Bullet Remove existing HV Surge Arrester and structural supports
Bullet Analyze existing Transformer Protections

We provided the electrical design to fit the new transformer into the existing foundations. Our team also provided LV buswork revisions and modifications to the existing structure supporting the Transformer Conservator, to implement the Transformer Replacement. Additionally, the ground grid around the existing transformer was revised and ground connections to the new transformer were made and the HV buswork was modified to accommodate the newly designed HV Surge Arresters and CVTs.

As part of our work we also provided the new CVT Junction box structure and foundations, the Transformer Protections were upgraded and new secondary cables routed to control the building from the new CVTs. The ground grid around new CVT and Surge Arrester foundation was modified to accommodate the new equipment, while the LV Surge Arresters on 22kV Area were replaced. This project was completed in summer 2011.



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