Custom-engineered from 20 to 600 MVA, up to 525 kV. Built to IEEE C57 family, ANSI, and NEMA standards — for utilities, independent power producers, EPC contractors, and defense infrastructure.
| Category | Specification |
|---|---|
| Capacity Range | 20–600 MVA |
| Phases | Single-phase and three-phase |
| HV Winding Voltage | 115 kV, 138 kV, 230 kV, 345 kV, 500 kV, 525 kV classes |
| LV Winding Voltage | Up to 69 kV |
| Impedance | 4% to 16% (custom per system configuration) |
| Winding Configurations | Two-winding; Three-winding |
| Tap Changer | On-Load Tap Changer (OLTC) standard; De-Energized (DETC) available |
| Cooling Methods | ONAN / ONAF / OFAF (specified per load profile) |
| Winding Material | High-conductivity copper (standard) |
| Insulation Medium | Liquid-immersed mineral oil |
| Standards | IEEE C57.12.00, IEEE C57.12.10, IEEE C57.12.90, ANSI, NEMA |
| Compliance | Buy American Act (BAA), BABA, §303 Defense Production Act |
| Factory Testing | IEEE C57.12.90 routine and type tests; full test report included |
| Lead Time | 48 weeks |
| Manufacturing | United States |
LIMIK large power transformers are custom-engineered, liquid-immersed, oil-insulated units designed for transmission interconnection, bulk substation, and generation applications. Available from 20 to 600 MVA at voltage classes up to 525 kV — every unit is engineered to your specification. No catalog selections. No compromises.
Each transformer is designed to IEEE C57.12.00 and IEEE C57.12.10 standards with full ANSI compliance. Winding configurations include two-winding and three-winding designs. On-load tap changers (OLTC) are standard on all transmission-class units. Cooling systems are specified per load profile — ONAN base rating with ONAF and OFAF stages available for units above 100 MVA.
Every unit is factory-tested to IEEE C57.12.90 with full test reports provided. Buy American Act (BAA), BABA, and §303 Defense Production Act compliant on every order. Typical lead time: 48 weeks from signed specification to shipment.
Bulk power delivery and transmission-to-distribution step-down for investor-owned utilities, cooperatives, and municipal power providers.
High-voltage tie points and inter-substation connections across regional transmission systems including PJM, MISO, SPP, and WECC.
Large industrial facilities requiring direct interconnection to the transmission grid — refineries, data centers, and heavy manufacturing.
Mission-critical power delivery for DOD and DOE facilities. §303 Defense Production Act and Berry Amendment compliant.
No standard catalog units. Every transformer is engineered to your specification: MVA rating, voltage class, impedance, tap range, and cooling configuration.
High-conductivity copper windings standard on all LIMIK units. No aluminum substitutions — ever.
On-load tap changer standard for continuous voltage regulation under load. De-energized tap changer (DETC) available on distribution-interface units.
Satisfies BAA, BABA, and Berry Amendment requirements. Eligible for DOD/DOE direct procurement under §303 Defense Production Act.
