Collection System Services

Sentry Electrical Group provides complete design build solutions for Wind Turbine underground and overhead collection systems. Sentry approaches the collection system design in a manner that optimizes the cable size based on actual thermal resistivity, size and number of wind turbines per circuit turbines and customers desired loss requirements. We balance the losses between the pad mount transformers where they exist with the cable losses to produce the desired losses with the lowest overall costs. Cables are sized to meet the required ampacity with adequate margins of safety.

Sentry works closely with the Wind Farm owners to optimize substation location and the mix of above ground and below ground collection circuits within the project constraints such as terrain and land owner preferences.

Sentry employs underground cable installation methods that ensure that the cable is adequately protected so that it will give optimal performance through out the cable’s useful life. Underground cable is laid in a bed of fine material to protect it from rocks and other debris that can cause damage over time with frost heave.

Overhead collection lines are built with optimum span lengths utilizing the most cost effective materials for construction.

Throughout construction, our site inspectors are with the installation crews reviewing all aspects of our construction. Our inspectors use a multipoint checking system as their guide for review.

Sentry Electrical Group’s approach to design, construction and real time inspection provides our customers with the best value in their collection systems available.

Electrical Construction

Transmission & Distribution

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Transmission & Distribution
Click here to see our list of recent T&D projects.

Wind Projects

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Wind Projects
Click here to see our list of recent Wind projects.