Product Introduction
Overview
• Three-Phase Padmount Transformers are essential medium-voltage distribution units used throughout the United States for safe and efficient power delivery in underground electrical networks. Designed for outdoor installation on a concrete pad, these transformers feature a tamper-proof, compartmentalized enclosure that protects energized components and meets stringent ANSI/IEEE and NEMA standards for public safety and reliability.
Application
• Three phase pad mounted transformers serve utilities, commercial complexes, industrial plants, data centers, campuses, hospitals, large residential developments and municipal infrastructure, delivering underground three-phase distribution that supports safe clearances, compact siting, reliable voltage regulation and coordinated protection across U.S. networks.
Three-Phase Padmount Transformers Features
| Feature | Item | Details |
|---|---|---|
Tank Access | Bolted cover | 45–1000 kVA |
Welded cover with handhole | 1500–7500 kVA | |
Security | Three-point latching door | For high-voltage cabinet |
Lightning Protection | Lightning arrester provisions | Live-front units |
Nameplate | Laser-scribed anodized aluminum | Durable and permanent |
Fluid Access | One-inch drain valve with sampler | In low-voltage compartment (45–7500 kVA) |
One-inch upper fill plug | Standard fluid fill | |
Pressure Management | Automatic pressure relief device | Built-in |
Cabinet Depth | 20″ / 24″ / 30″ cabinet | Based on rating: 20″ (45–1000 kVA), 24″ (1500–7500), 30″ (34.5 kV) |
Installation | Removable sill | Easier transformer placement |
Internal Divider | Steel divider between HV and LV compartments | Electrical separation |
Bushings | RTE 15/25 kV 200 A (HTN) bushing wells | Dead-front |
RTE 15/25/35 kV 200 A integral bushings | Dead-front | |
Cooper wet-process porcelain bushings | Live-front | |
Lifting Hardware | Lifting lugs | 4 included |
Grounding | Stainless steel ground pads | 45–500 kVA |
NEMA 2-hole ground pads | 750–7500 kVA | |
Hardware | Stainless steel cabinet hinges and mounting studs | Corrosion-resistant |
