Client: Eversource Energy
In 2019, SAE Inc. (SAE) was approached by Eversource Energy to provide a grounding solution for a transmission line application in Middletown, Connecticut. Posed with the challenge of grounding in areas with rocky conditions. SAE’s Conducrete® and ConduForm™ enhanced solutions were used to create a more effective grounding system, as it reduced the length of counterpoise required to meet utility performance targets and environmental, geographical restrictions.
Client: AltaLink L.P.
In 2018, AltaLink L.P. contacted SAE Inc. (SAE) with regards to achieving the targeted trip ground impedance levels on one of the utility’s circuits, in Bnaff, Alberta. SAE’s ConduDisc®, ConduFlow® and Conducrete® were used to successfully create an effective and easy to install grounding solution.
Client: Liberty Utilities Hollister
In 2019, SAE Inc. (SAE) was contracted by Liberty Utilities Hollister to provide an effective grounding solution, as installing sufficient grounding at the electrical substation, in Hollister, Missouri had proven to be a challenging task, due to the minimal overburden over highly resistive dolomite bedrock. SAE used specialized test equipment and CDEGS software to design and install a deep vertical solution to meet the utility grid design requirement. Conductive backfills Conducrete® and ConduForm™ were recommended and install by SAE, as a means to provide a more effective ground.
Client: Wallwin Barrie First Responders Campus
In 2018, SAE Inc. (SAE) was contracted to design and install the electrical grounding system for the main power transformer and communications tower at the new Barrie-Simcoe Emergency Services Campus located in Barrie, Ontario. By utilizing SAE’s innovative design methods and materials, our technical team designed and facilitated the installation of an effective grounding system with a smaller footprint than the large ground grid that was previously designed – ultimately providing significant cost savings to the client.
Client: T-Mobile US, Inc.
In 2018, T-Mobile US, Inc. (T-Mobile) commissioned SAE Inc. (SAE) to review existing grounding and provide recommendations for system expansion at their Wayne, New Jersey Switching Center. SAE performed a grounding audit for the existing facility, finding a non-single point interior grounding system with several loops that posed a threat for equipment damage in the event of a power surge or lightning strike. Soil resistivity testing was performed onsite in order to determine the appropriate amount of exterior grounding to achieve the T-Mobile target value of 5 ohms.
In combination with expansion design drawings provided by T-Mobile, SAE designed a single point grounding layout for the existing facility and new expansion. The interior design provided bonding of all equipment in an efficient routing to a new master ground bar. For the exterior grounding, SAE modelled the soil resistivity data and designed a vertical ground well that achieved less than 5 ohms resistance. Upon review of the grounding design and recommendations, T-Mobile awarded the supply and installation for the new grounding to SAE. All interior renovations for grounding, bonding and the installation and connection of the exterior ground well was completed by SAE.
Client: Bell Mobility
Bell Mobility is a Canadian LTE and HSPA+ based wireless provider and the division of Bell Canada which sells wireless services across Canada. So, when posed with a very challenging electrical grounding issue, they decided to approached SAE Inc. (SAE) to perform electrical grounding studies on 10 transmission sites that were located on Hydro One power line towers. Upon extensive discussions regarding grounding design and implementation held between SAE, Bell Mobility, and Hydro One it was determined that a revised grounding design was required. SAE subsequently developed site-specific grounding designs utilizing grounding grids and ground wells enhanced with Conducrete® together with high resistivity finished grade surface treatments and isolation transformers. The designs were reviewed on a site by site basis by Hydro One and approved. Grounding systems on sites with high voltage power line right-of-ways in both Mississauga and Etobicoke, Ontario have since been constructed by SAE between 2015 and 2017.