Generator and ATS Upgrade Discussion Overview

  • Introduction: Discussion center around upgrading generator and ATS (Automatic Transfer Switch) for a complex with fitness, assisted living, and other buildings.

  • Current Equipment:

    • Generators:
    • 200 kW generator and a 250 kVA gen set currently on-site.
    • 125 kW generator serving the assisted living facility - considered too old and inadequate for current needs.
    • ATS:
    • The current ATS is insufficient (rated at 225 amps) for the demands of the buildings.

  • Key Power Needs:

    • Total low demand calculated at 100 kVA from the combined needs of the buildings, indicating potential under-utilization (running at about 50%).
    • Analysis of peak power demand shows 171 kVA.
    • Current setup primarily serves two cooling towers and possibly multiple small pump loads.

  • Load Management:

    • Proposed solution includes upgrading ATS to handle larger loads. Need a capacity increase to 400 amps to effectively manage the new demand to support buildings A, C, and possibly D.
    • Re-evaluate the load needs for elevators and emergency lighting, currently pegged at 30 amps for elevators and 4 kW for emergency lighting.

  • Generator Capacity Concerns:

    • Discussion on whether the current generator setup (200 kW) will suffice for future loads. Recommendations included considering a new generator with larger capacity like 300 kW or 225 kW at the same location.
    • Need to clarify if elevators will require emergency power, as this impacts power calculations.

  • Site Considerations:

    • Evaluate the physical space for new and existing generators, fuel tanks, and ATS placements.
    • Need to check on an existing generator at 150 kW for service potential.

  • Meeting Notes:

    • Clarify specifics on drawings, including the absence of required as-builts for fitness and assisted living facilities.
    • Need proposal involving potential removal or upgrade of the existing old generator serving assisted living.
    • Address electrical feeder specifications, especially the use of aluminum versus copper for cost efficiency given recent market price trends.

  • Future Studies:

    • Discuss conducting detailed load studies over a longer period (suggested 30-day study) to accurately assess ongoing loads for emergency panels.
    • Ensure key stakeholders are kept in the loop with progress and any decisions made regarding upgrades or installations.

  • Conclusions/Next Steps:

    • Compile noted issues to discuss in future meetings focusing on generator upgraded strategy, load management, and layout proposals. Need ongoing coordination for technical requirements and future load assessments.