Liquid-Filled Transformers
6000 / 7500 kVA; Silicone-Filled
Up to 30 MVA with Voltages to 69 kV (350 BIL)
Niagara Transformer designs and builds standard and custom liquid-filled transformers with conventional mineral oil-filled or Factory-Mutual (FM) approved fluids (e.g. Envirotemp® FR3TM, Alpha, Beta, Midel, Silicone Fluids).
Depending on the application, we offer conventional liquid-filled, sealed tank, conservator, or positive pressure nitrogen systems.
Our transformers are built using copper or aluminum windings with circular or elliptical shaped coil construction. We offer UL recognized insulation systems.
We provide liquid-filled transformers with tap-changing capability. Off-load is available in two ways: external switch, or an easily accessible internal link board. On-load is available with an external switch (either vacuum/reactive interruption or conventional/resistive interruption).
We can provide transformers with radiators, forced air, forced oil air, forced oil water, or oil with natural water-cooled heat exchangers.
3500 / 3920 / 4900 kVA Rectifier-Duty; KNAN
3300 kVA Excitation; Mineral Oil
8000 / 10000 / 12500 kVA On-Load Tap-Changing (LTC); Mineral Oil
