| Brand | ROCKWILL |
| Model NO. | Customizable Pad mounted transformer for residential subdivision |
| Rated voltage | 22kV |
| Series | ZGS |
The Rockwill pad-mounted transformer is a fully enclosed, ground-level power distribution solution designed for residential subdivisions, public areas, and underground network applications. Housed in a tamper-proof, , it combines robust American-style construction with advanced engineering to deliver reliable and secure step-down distribution in space-constrained urban environments.
| Parameter | Value |
|---|---|
| Rated power | Up to 2500 kVA |
| Rated voltage (HV) | 22 kV (25 kV class per ANSI C57.12.34) |
| Rated voltage (LV) | 480Y / 277 V or 208Y / 120 V, or as specified |
| Insulation level | 25 kV class / BIL 125 kV / LFWV 40 kV |
| Frequency | 60 Hz |
| Vector group | Dyn1, Dyn11, or as specified |
| Tapping range | ±2 × 2.5 % (off-circuit) |
| Cooling method | ONAN |
| Winding material | Copper / Aluminum (optional) |
| Enclosure | NEMA 3R, tamper-resistant, lockable |
| Standards | ANSI C57.12.34, IEEE C57.12.00 |
Full load loss, no-load loss, and impedance voltage values are provided on request per project-specific ratings.
Custom ratings, voltages, impedance, tapping arrangements, and accessory options (SCADA-ready, metering, surge arresters) available on request. Contact Rockwill for application-specific design and quotation.
