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75kVA Three Phase Dry Type Transformer Low Voltage 600V to 208Y/120V NEMA 3R UL Listed
| Brand Name: | WINLEY |
| Model Number: | SG-75KVA |
| MOQ: | 1unit |
| Price: | $1000-$100000 |
| Packaging Details: | Plywood case |
| Payment Terms: | T/T |
75kVA three phase dry type transformer
,low voltage 600V to 208Y/120V transformer
,NEMA 3R UL listed transformer
Product Overview
This 75kVA three phase dry type transformer is configured for commercial, light industrial, and building power distribution projects that need to step down 600V service power to 208Y/120V utilization voltage. With a 600V primary side and 208Y/120V secondary side, it is suitable for supplying 208V three-phase equipment and 120V single-phase branch loads from one transformer.
The transformer uses copper windings, 60Hz design, D/yn vector group, mechanical terminals, NEMA 3R enclosure, and adjustable primary taps of +2×2.5% / -4×2.5%. These configurations help buyers match site voltage conditions, enclosure requirements, and North American specification review needs before inquiry or final project confirmation.
Why choose us
1. Winley Electric three-phase dry-type transformers are UL/cUL Listed under File No. E531446. UL-certified Class C insulation systems are also available under File No. E531317 to support North American project compliance and operation.
2. With experience in North American utility, industrial, commercial, solar PV, data center, and infrastructure projects, Winley Electric designs VPI dry-type transformers to meet applicable ANSI/IEEE, UL, CSA, NEMA, DOE, and related project requirements.
3. Backed by mature VPI manufacturing processes and flexible engineering design capabilities, Winley Electric VPI dry-type transformers are designed for high mechanical strength, strong overload capability, thermal endurance, and reliable operation.
Product Photos
Main Data
| Item | Data |
|---|---|
| Product type | Three Phase Dry Type Transformer |
| Rated capacity | 75kVA |
| Phase | 3 phase |
| Primary voltage | 600V |
| Secondary voltage | 208Y/120V |
| Frequency | 60Hz |
| Vector group | D/yn |
| Winding material | Copper winding |
| No-load loss | 182.3W at 600V |
| Load loss | 1853.6W at 100% load |
| Impedance | 3.15% |
Factory Test Report
Standard Features
- H1 / H2 / H3 primary terminals — clearly marked primary-side connection points for the 600V input side.
- X1 / X2 / X3 / X0 secondary terminals — clearly marked secondary-side output terminals for 208Y/120V distribution with neutral.
- Tap positions 1–7 — visible numbered tap points on each phase support primary voltage adjustment.
- Red primary terminal busbar — provides a clear and organized high-voltage-side connection layout.
- Red secondary terminal busbar — supports structured low-voltage-side output connection.
- Color-identified phase wiring — visible phase leads help simplify wiring recognition during installation and inspection.
- Mechanical bolted terminals — support practical cable termination and maintenance access.
- Three-coil dry-type structure — open visible three-phase coil arrangement supports inspection and confirms dry-type transformer construction.
| Sector | Suitable applications |
|---|---|
| Commercial buildings | Power distribution for panels, lighting systems, receptacle loads, and service areas |
| Light industrial facilities | Auxiliary power supply, small machinery groups, control panels, and workshop distribution |
| Equipment rooms | Transformer installation near electrical rooms or mechanical rooms |
| Replacement projects | Replacing existing 600V to 208Y/120V dry-type transformers |
| Outdoor protected distribution | Enclosed transformer installation where NEMA 3R is specified |
| Commercial / industrial service conversion | Supplying 208Y/120V from a 600V service source |
| Model (kVA) | Primary Voltage | Secondary Voltage | Coupling Group | Shape Dimension | Mounting Dimension | Box Dimension |
|---|---|---|---|---|---|---|
| SG-10KVA | 660/400/380/200 | 380/220/110/36 | Yyn0/Y/d/D/y/D/d | 360×180×305 | 215×140 | 450×360×480 |
| SG-15KVA | 660/400/380/200 | 380/220/110/36 | Yyn0/Y/d/D/y/D/d | 360×200×335 | 215×155 | 450×360×480 |
| SG-20KVA | 660/400/380/200 | 380/220/110/36 | Yyn0/Y/d/D/y/D/d | 420×210×350 | 250×170 | 490×400×540 |
| SG-30KVA | 660/400/380/200 | 380/220/110/36 | Yyn0/Y/d/D/y/D/d | 420×230×380 | 250×190 | 490×400×540 |
| SG-50KVA | 660/400/380/200 | 380/220/110/36 | Yyn0/Y/d/D/y/D/d | 680×350×550 | 420×220 | 800×510×840 |
| SG-80KVA | 660/400/380/200 | 380/220/110/36 | Yyn0/Y/d/D/y/D/d | 750×400×620 | 480×250 | 850×510×840 |
| SG-100KVA | 660/400/380/200 | 380/220/110/36 | Yyn0/Y/d/D/y/D/d | 780×420×650 | 500×250 | 900×550×890 |
