SBP‑300‑XFMR‑ND‑AUTO
300 kVA Autotransformer
300 kVA mobile autotransformer for stepping between 480 V and 600 V systems. 400A cam lock in and out.
Rating300 kVA
Primary480 V
Secondary600 V
Full-load secondary289 A @ 600 V
Features
- Heavy-duty roll cage design – stackable for transport and storage
- Easy access for maintenance and operation
- Weatherproof enclosure, NEMA 3R compliant
- Safety guards on all electrical connections
- Corrosion-resistant construction: powder-coated, galvanized or aluminum components
- Single point lifting bail, engineered and load-rated
- UL 489-rated breakers with adjustable trip settings
Transformer
- 3-phase autotransformer, aluminum windings
- Sound level meets NEMA ST-20
- CSA Certified – File LR34493 (5 kV max, 900 kVA max)
- UL Listed – File E108255 (600 V max, 750 kVA max)
- 220 °C / 428 °F insulation rating
Unit specifications
| Electrical | |
|---|---|
| kVA rating | 300 |
| Transformer type | Auto |
| Primary voltage | 480 V |
| Secondary voltage | 600 V |
| Full-load primary amps @ 480 V 3Ø | 361 A |
| Full-load secondary amps @ 600 V 3Ø | 289 A |
| Impedance | 2% – 6% |
| Primary taps available | 480V, 570V, 585V, 600V, 615V, 630V |
| Average sound level | 55 dB |
| Cooling | ANN/AN self-cooled |
| Insulation rating | 220 °C |
| Connections and distribution | |
| Primary inlet | 3 × 400A Cam Lock (L1, L2, L3, GND); optional blank gland plate for hard wire |
| Secondary outlet | 2 × 400A Cam Lock (L1, L2, L3, N, GND); optional blank gland plate for hard wire |
| Protection | |
| Primary protection | 500 A MCCB, 0.8 adjustable, UL 489 |
| Secondary protection | 400 A MCCB, 0.8 adjustable, UL 489 |
| Physical | |
| Dimensions (L × W × H) | 63 × 55 × 75 in |
| Enclosure type | Type 3R Outdoor |
| Lifting | Single point bail |
| Compliance and approvals | |
| Standards | SPE-1000, UL 1640 compliant design, CSA C22.2 No. 5, UL 489, IEC/EN 60947-2, CE compliant |
The SBP Transformer range without integrated power distribution is currently in development and may be subject to change. Final specifications will be provided for customer approval prior to manufacturing.