Three-phase pad mounted transformer

Henan GNEE Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of three-phase pad mounted transformer in China. If you're going to buy customized three-phase pad mounted transformer made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.

A dead-front pad-mounted transformer is a tamper-resistant, fully enclosed, ground-level distribution transformer in which all high-voltage terminations are covered by insulated, non-conductive dead-front components - eliminating exposed live parts. This makes it the industry-preferred solution for residential, commercial, and underground power distribution networks, where public safety, compact footprint, and reliability are essential.

This page covers the three-phase dead-front loop feed pad-mounted transformer supplied by GNEE Electric - an oil-filled (non-PCB mineral oil), UL-listed unit built to ANSI/IEEE standards. A representative configuration is a 3000kVA unit with a stainless-steel outdoor enclosure, Munsell green finish, 13,800V delta primary, and 480Y/277V wye secondary. Capacities from 75kVA to 3750kVA are available. Request a factory-direct quotation and receive full technical documentation within 24 hours

Reference Configuration – 3000kVA pad-mounted transformer

Key Features of pad-mounted transformer

1. Dead-front safety design – All HV terminations use insulated dead-front components with no exposed live parts, providing maximum protection for utility workers, the public, and property.
2. Dual-loop feed capability – Loop feed design allows power to be fed from either direction, improving supply continuity and simplifying network configuration.
3. Underground-ready – Designed for direct cable connection in underground residential distribution (URD) systems, eliminating overhead lines and improving neighborhood aesthetics.
4. Outdoor-rated, weather-resistant enclosure – Powder-coated stainless steel withstands rain, wind, salt spray, and extreme temperatures.
5. High-efficiency, low-loss core – Optimized core design delivers low no-load and load losses, reducing lifetime operating cost.
6. Oil-filled cooling, low noise – Non-PCB mineral oil provides effective cooling and quiet operation.
7. Compact ground-level footprint – Pads directly on a concrete base with no transformer room or fence required when dead-front safety is applied.

Key Attributes

Technical Data – Three-Phase Pad-Mounted Transformer

Applications of pad-mounted transformer

Three-phase pad-mounted compartmental transformers are widely used in:

• Residential power distribution – Underground residential distribution (URD) systems and housing developments.
• Commercial facilities – Shopping centers, office complexes, and mixed-use developments.
• Industrial sites – Factories, mining sites, and process plants requiring safe ground-level distribution.
• Utility networks – Underground cable networks where overhead lines are not permitted or desirable.

Request A Quote

Get a Factory-Direct Quote for Your Pad-Mounted Transformer Project

Tell us your kVA rating, primary and secondary voltages, vector group, frequency, and destination country. GNEE's engineers will reply within 24 hours with a quotation, technical datasheet, and delivery plan.

📧 Email: sales@gneeelectric.com ｜ 💬 WhatsApp: +86 158 2468 7445

FAQ

Q1: What is a dead-front pad-mounted transformer?

A: It is a ground-level, fully enclosed distribution transformer in which all high-voltage terminations are covered by insulated dead-front components. There are no exposed live parts, so it is safe for residential neighborhoods and public areas.

Q2: What is the difference between dead-front and live-front pad-mounted transformers?

A: In a live-front unit, energized parts are partially exposed and require a locked enclosure and restricted access. In a dead-front unit, all terminations are insulated and covered, enabling safer installation in public and residential areas.

Q3: What is a loop feed design?

A: Loop feed means the transformer can be fed from either side of the loop, allowing power to be restored from an alternate source if one feeder fails. This improves supply continuity in underground networks.

Q4: What kVA range and voltage ratings are available?

A: Three-phase units from 75kVA to 3,750kVA (larger on request) with primary voltages of 12.47, 13.2, 13.8, 24.94, and 34.5kV, and secondary voltages such as 480Y/277V or 0.4/0.415kV.

Q5: Is the transformer UL listed?

A: Yes, UL Listed certification is available, and the transformer is built to ANSI/IEEE C57.12 standards for the North American market.

Q6: Can the enclosure color and configuration be customized?

A: Yes. Enclosure color (e.g., Munsell green, grey), enclosure material (stainless steel or mild steel), compartment configuration, and optional accessories (temperature control, SCADA interface) can be customized.

Q7: How do I request a quotation?

A: Provide the kVA rating, primary/secondary voltages, vector group, frequency, and destination country. Our engineers will reply within 24 hours with a quotation, datasheet, and delivery schedule.

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