EXHIBIT_B_RECLOSER_SPEC.pdf

This is a recloser specifications document prepared by Florida Keys Electric Cooperative (FKEC) for their 2027 Recloser projects, which involve installing new recloser systems throughout their service area. The specification details a SEL 0651R22D1GAXAE1112B4XX control unit designed for a nominal voltage of 24.9 kV with a maximum design voltage of 27 kV rms and a rated continuous current minimum of 800A. Key technical requirements include a maximum symmetrical interrupting capacity of 12.5 kA at maximum design voltage, impulse voltage withstand of 150 kV crest, low frequency withstand of 60 kV rms dry and 50 kV rms wet, and ambient operating temperature range of -30°C to 40°C. The equipment must include 40-foot control and potential transformer cables with connectorized interfaces, silicone shed insulators rated for 38 kV minimum with 30 inches creepage on both sides, and 4-hole NEMA copper-tinned aerial lugs. Parameter sensing requires low energy analog (LEA) voltage sensing on both phases with 10 VAC maximum output at a 10,000:1 ratio and 2 percent or better accuracy, plus three-phase internal current sensing at a 1000:1 ratio. Minimum spacing requirements specify 19.5 inches phase-to-phase and 15 inches phase-to-ground.

The specification mandates that all poles include animal guards with the bid identifying the type and including related drawings. Seven lightning arresters total are required—one for each of the six bushings plus one additional unit—manufactured by Siemens (Model 3EK7 210-4AF4-P12 P31 M83) or equivalent, with animal guards provided for the lightning arresters. The document notes this is Revision 3 (October 2025) and emphasizes that any specification deviations required to accommodate lead times or other circumstances must receive prior approval from FKEC engineering. All drawings must be approved by FKEC engineering before production commences. The revision history indicates previous updates correcting spelling, changing bushing covers, removing a potential transformer component, adding spacing requirements, and adding equivalent lightning arrester options.