PRODUCTS > PADMOUNT TRANSFORMERS
Single & Three-Phase Padmount Transformers
Pacific Transformer offers a complete line of liquid-filled padmount distribution transformers — in stock and ready to ship. With high voltages up to 46 kV and ratings up to 10,000 kVA, our compartmental-type three-phase padmount transformers are designed to provide underground or throated power distribution to commercial, industrial, and institutional loads.
In Stock & Ready to Ship
High-grade materials, combined with sophisticated engineering design systems are key elements of a transformer that will deliver decades of reliable service. Made-to-order lead times: 12–14 weeks.
| Specifications | Single-Phase | Three-Phase |
|---|---|---|
| Sizes | 15 kVA – 250 kVA | 45 kVA – 10,000 kVA |
| Temperature Rise | 65°C, 55/65°C | 65°C, 55/65°C, 65/75°C, 75°C |
| Fluid | Mineral Oil or FR3 | Type II Mineral Oil or FR3 |
| High Voltage | 2,400 V – 35,000 V | 2,400 V – 46,000 V |
| Low Voltage | 120 V – 600 V | 208Y/120 V – 14,400 V |
| Frequency | 50 Hz or 60 Hz | |
| Cooling Class | ONAN, ONAF, K NAN, K NAF | |
| Winding Material | Copper or Aluminum | |
Construction
Grain-oriented silicon steel core, DOE 2016 Efficiency, UL Listed, NEMA TR1 Sound Level. Equipped with lifting lugs — 1 standard for single-phase, 4 for three-phase units.
Accessory Options
Stainless steel nameplate, pressure relief valve, pressure vacuum gauge, liquid temperature gauge, liquid level gauge, drain and sample valve, arrester(s), bayonet fusing, and LBOR switch.
Three-Phase Only
Steel barrier between HV and LV, pentahead bolts, 20"–30" cabinet depth, external drain/sample valve in lockable box, external switch and gauges in NEMA 3R box, gauge with alarm contacts.
Optional Designs
High voltage taps, dual voltage primary, stainless steel tank, skid-mounted options, throated connection / close-coupling, step-up with electrostatic shields, K-factor rating, and amorphous steel core.
Industries Served
From NASA payloads to guitar amplifiers, Pacific Transformer's custom magnetics power some of the most demanding applications in the world. Our engineering team has deep experience across industries where compliance, performance, and reliability aren't optional — they're required.
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