Products / Dry-Type Transformers
Dry-Type Transformers
UL 1561 / UL 1562, cast resin & VPI, 30-3,000 kVA
Dry-type transformers for indoor electrical rooms, high-rise buildings, tunnels, marine and other fire-sensitive locations where liquid-filled units are not acceptable.
General-purpose units are UL listed under file E539752 (UL 1561); medium-voltage distribution units are certified under file E545481 (UL 1562). Insulation systems are UL-recognized under file E538000.
Technical range
| Rated capacity | 30 – 3,000 kVA |
|---|---|
| Primary voltage (UL 1562) | 3.5 – 6.9 kV |
| Secondary voltage | 100 V – 1.5 kV |
| Construction | Cast resin or vacuum-pressure impregnated (VPI) |
| Insulation system | UL-recognized system, file E538000 |
| Enclosure | Open core & coil, or ventilated NEMA enclosure |
| Cooling | AN (fans optional for capacity boost) |
Standard features
- ■Windings produced in a dust-free winding room and processed on an automatic vacuum-impregnation line
- ■Low partial-discharge design, verified in a shielded PD test room
- ■K-factor rated designs for harmonic-rich loads (drives, IT equipment)
- ■Temperature monitoring and fan-control packages available
Standards & certification
- UL Listed, file E539752 (UL 1561)
- UL Certified, file E545481 (UL 1562)
- UL-recognized insulation system (file E538000)
- CSA C22.2 No. 47 (Canada)
In production
Need pricing on dry-type transformers?
Tell us kVA, voltages, quantity, and timeline. We come back with unit pricing, lead time, and freight within one business day.