Eaton’s secondary unit substation is a close-coupled assembly consisting of primary high voltage equipment, three-phase power transformers and secondary low voltage equipment. Because the integrated transformer solution locates transformers and secondary distribution equipment near the load concentration, secondary distribution cables/buses are kept to minimum lengths – reducing power losses and exposure to faults and improving voltage regulation and service continuity.
RATED MAXIMUM PRIMARY VOLTAGE | 4.76 kV, 15 kV , 27 kV, 34.5 kV |
kVA - Three Phase | 112.5 - 3750 kVA |
BASIC IMPULSE LEVEL (BIL) | 350 kV BIL and Below |
Secondary voltage | 600 V |
IEEE STANDARD | 100-1977 |
ANSI | C57.12.00, C57.12.91 |
NEMA | 201-1982 |
CSA | C88 |
THIRD-PARTY APPROVAL/RECOGNITION | UL , FM |
SEISMIC QUALIFICATION | Zone 4 Certification |
INSULATING MEDIUM | Mineral Oil, Silicone Fluid, Envirotemp™ FR3™, VPI, VPE, Cast Coil, RESIBLOC |
ENCLOSURE TYPE | NEMA 1, NEMA 3R |
Bus Material | Copper, Aluminium |