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Single Phase Pad Mounted Transformer - Batch Production
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ANSI/IEEE COMPLIANT | UL/CSA CERTIFIED

Single Phase Pad Mounted Transformer

ANSI/IEEE compliant single-phase pad-mounted transformer for underground distribution. Compact, tamper-resistant design with oil-immersed cooling system ensures reliable single-phase power supply to residential, commercial, and light-industrial facilities.

Capacity
5-250 kVA
Voltage
Up to 19.9 kV
Cooling
ONAN / FR3
BIL
150 kV
DOE 2016 Compliant
8-12 Week Delivery

Product Overview

The Single-Phase Pad-Mounted Transformer is designed for underground distribution and single-phase power supply to residential, commercial, and light-industrial facilities. Featuring a compact, tamper-resistant enclosure, it's ideal for installation in urban areas, neighborhoods, and public spaces. It provides reliable single-phase voltage transformation from the distribution network to the end-user, suitable for both utility and non-utility applications.

Key Features

Compact & Tamper-Resistant Design: Low-profile pad-mounted cabinet with lockable and vandal-resistant construction ensures safe outdoor installation.
Oil-Immersed Cooling System: Uses high-performance transformer oil (ONAN or optional FR3) for efficient heat dissipation and superior insulation protection.
Wide Range of Ratings: Available from 5 kVA up to 250 kVA, with primary voltages up to 19.9 kV (150 kV BIL).
High Efficiency & Full Compliance: Meets DOE 2016 energy efficiency standards and complies with NEMA, ANSI C57, and IEEE design codes.
Safety Features: Lockable cabinet, pressure relief valve, nitrogen blanket, sampling valve, oil-level and temperature indicators.
Flexible Connections: Dead-front bushings, low-voltage spade or bolted connectors for easy installation and maintenance.

Frequently Asked Questions

Common questions about single-phase pad-mounted transformers

What is a single-phase pad-mounted transformer?

A single-phase pad-mounted transformer is a ground-mounted distribution transformer housed in a tamper-resistant steel cabinet. It's designed for underground power distribution systems, providing single-phase power to residential, commercial, and light-industrial applications.

What are the main advantages of single-phase pad-mounted transformers?

Key advantages include: compact and space-efficient design, enhanced safety with lockable enclosures, aesthetic appeal for residential areas, protection from weather and vandalism, easy maintenance access, compatibility with underground cable systems, and reliable single-phase power distribution.

What voltage ratings are available?

Our single-phase pad-mounted transformers support high voltage up to 19.9 kV (150 kV BIL) and low voltage options including 120V, 240V, 480V in various configurations. Custom voltage specifications can be accommodated based on your requirements.

What capacity (kVA) options do you offer?

We manufacture single-phase pad-mounted transformers from 5 kVA up to 250 kVA. Common sizes include: 5, 10, 15, 25, 37.5, 50, 75, 100, 167, and 250 kVA. Custom capacities can be designed for specific applications.

What standards do your transformers comply with?

Our single-phase pad-mounted transformers comply with ANSI/IEEE standards including C57.12.00, C57.12.22, C57.12.26, and C57.12.28. They meet DOE 2016 energy efficiency standards and hold NEMA, UL, and CSA certifications.

What cooling types are available?

Standard cooling is oil-immersed (ONAN - Oil Natural Air Natural). We also offer optional FR3 bio-based dielectric fluid or high-flash-point mineral oil for enhanced fire safety and environmental protection.

What is the typical lead time for delivery?

Standard configurations typically have a lead time of 8-12 weeks. Custom specifications may require 12-16 weeks. We maintain inventory for common sizes to support urgent orders. Contact our sales team for specific delivery timelines.

What applications are single-phase transformers best suited for?

Ideal applications include: residential underground distribution, commercial buildings, EV charging stations, pump systems, street lighting, telecommunications facilities, and any single-phase power requirement from 5 kVA to 250 kVA.

Designed & Manufactured in Compliance With

IEEE C57.12
IEC 60076
CEI EN 50588
ANSI
GB/T

All products undergo rigorous testing and quality control to ensure compliance with international standards

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