2000kVA Three-Phase Loop-Feed Pad-Mounted Transformer 34500V to 480Y/277V For

1. Winley Electric three-phase transformers are UL/cUL Listed under File No. E536138, with ratings from 45 kVA through 10 MVA. They are designed and manufactured to meet applicable ANSI/IEEE, CSA, NEMA, and DOE 2016 requirements.
2. With extensive experience in North American utility, industrial, and commercial projects, Winley Electric can deliver cost-effective customized solutions based on your specific project requirements.
3. With a strong supply chain and experienced production team, Winley Electric support fast delivery with a 4–6 weeks production time after technical approval to help keep your project on schedule.

Engineered for supreme reliability and high-capacity power delivery, this 2000 kVA three-phase liquid-filled pad-mounted transformer provides seamlessly efficient step-down conversion from 34500V to 480Y/277V. It serves as an indispensable backbone for demanding outdoor underground distribution networks powering industrial plants, high-density data centers, commercial campuses, and critical infrastructure.

Engineered for loop-feed versatility, it integrates robust, compartmentalized HV/LV construction, coordinated primary protection, ONAN self-cooling, a Dyn1 vector configuration, and a 150 kV primary BIL. The transformer is UL/cUL Listed under File No. E536138 and complies with ANSI C57.12.34 and DOE 2016 energy-efficiency requirements.

     

• Four-Position Loadbreak Switch — Flexible Loop-Feed Control
  Supports feeder switching and sectionalizing for 35 kV-class loop distribution systems.
• 600 A Deadbreak Primary Interfaces — Fully Insulated Cable Connection
  Six IEEE 386-compatible interfaces accommodate incoming and outgoing loop-feed cables.
• Coordinated Fuse Protection — Two-Level Primary Protection
  Bayonet expulsion and current-limiting fuses work together to protect against overloads and higher fault currents.
• Five-Position Tap Changer — Accurate Voltage Adjustment
  Provides a ±5% adjustment range in 2.5% steps for closer matching with the primary system voltage.
• Separate HV and LV Compartments — Organized and Protected Access
  Keeps high-voltage switching and protection components separated from low-voltage terminations.
• Pressure, Oil-Level and Temperature Indicators — Clear Operating Visibility
  Provide direct monitoring of the sealed tank condition, insulating-oil level, and operating temperature.
• Pressure Relief Valve — Automatic Tank Protection
  Releases abnormal internal pressure to reduce mechanical stress on the sealed tank.
• Drain Valve with Sampler — Convenient Oil Testing and Maintenance
  Supports controlled oil drainage and sample collection without extensive disassembly.

A: Winley delivers standard three-phase pad-mounted transformers with a 4–6 weeks production time after technical approval. We provide a detailed production schedule and real-time manufacturing photos to help track progress.

A: We offer a flexible MOQ of just 1 unit. Complete inquiries are quoted within 1–2 days with 24/7 support. Leveraging our extensive North American project experience, we ensure highly cost-effective and reliable solutions.

A: Yes, We accept OEM and ODM. Winley three-phase pad-mounted transformers are available in standard ratings from 45–5000kVA (and maximum capability up to 10MVA), with HV systems up to 36 kV. We can customize electrical parameters, structure, fluid, protection, switches, gauges, tank and paint according to customer drawings, with the capability to integrate components from brands like Qualitrol, Eaton Cooper, and MR.

A: Yes. Our full range of products are UL/cUL-certified under UL File No. E536138, designed strictly in compliance with ANSI/IEEE, CSA, DOE, and NEMA requirements to meet grid connection and regulatory standards.

A: We deliver a complete compliance package: approval drawings, datasheets, routine test reports, UL/cUL certs, DOE 2016 docs, and operation manuals. We also back your project with lifetime documentation support.

A: Winley ensures quality through 4 annual unannounced UL audits and strict ISO 9001 process management with dedicated QC oversight. Prior to delivery, every unit undergoes comprehensive routine testing, including Winding Resistance, Turns Ratio, Polarity and Phase Relation, and No-Load Loss and Excitation Current tests. We also fully support Factory Acceptance Testing (FAT) and third-party inspections (SGS).

A: 24 months from B/L. During the warranty period, If there are any accessory problems, just provide photos of damaged accessory, then we will provide free service. According to the number of products, we will provide easily damaged accessories for free. We can also provide technical support if you need.