37.5 KVA Single Phase Padmount Transformer-23.9/0.24 KV | Jamaica 2025

Your Direct Link to Reliable Power: The Single-Phase Pad-Mounted Transformer.

01 General

1.1 Project Description

37.5 kVA three phase pad mounted transformer was delivered to USA in 2025. The rated power of the transformer is 37.5 kVA with ONAN cooling. The high voltage is 24GrdY/13.8 kV with ±2*2.5% tapping range (NLTC), the low voltage is 0.24/0.12 kV, they formed a vector group of Ii0.

A single phase pad mounted transformer is a compact, outdoor-installed electrical device designed for single-phase power circuits, serving as a critical link in modern power distribution systems. Its core function is to convert high-voltage electricity from the utility grid into low-voltage power usable by residential, commercial, and small industrial loads, or vice versa, based on Faraday’s law of electromagnetic induction. Composed of key components including an iron core, primary/secondary windings, and a sealed enclosure, this transformer operates through magnetic field induction between coils to achieve voltage regulation.

Core Design & Features

Compact & Low-Profile Structure: With a space-saving, low-profile design, it blends seamlessly with residential landscapes, greenbelts, or urban environments, eliminating the need for dedicated distribution rooms.

Reliable Cooling & Protection: Most models adopt oil-immersed self-cooling technology for efficient heat dissipation, while some offer dry-type options for non-toxic, pollution-free operation. The fully sealed enclosure meets IP protection standards, shielding internal components from weather, dust, and tampering.

High Safety & Durability: Equipped with automatic pressure relief devices, grounding straps, and tamper-resistant locks, it ensures safe operation in public-access areas. High-quality materials like stainless steel tanks and epoxy-cast windings extend service life, with minimal maintenance requirements.

Energy Efficiency & Low Noise: Compliant with DOE energy efficiency standards, it features low no-load and load losses. Advanced core design (e.g., grain-oriented silicon steel or amorphous alloy) further reduces noise and energy consumption, making it suitable for noise-sensitive environments.

1.2 Wide-Ranging Applications

This transformer is widely deployed in scenarios with moderate power demands:

• Residential areas: Powering homes, neighborhoods, and small communities where space and aesthetics are priorities.
• Commercial & public facilities: Supporting stores, restaurants, hospitals, schools, airports, and traffic signals.
• Rural & special sectors: Ideal for rural power grids, irrigation systems, oil fields, and remote areas due to its compact size and easy installation.

As a versatile and reliable power distribution solution, it combines space efficiency, safety, and energy savings, playing an indispensable role in stabilizing voltage, reducing line losses, and meeting the diverse power needs of modern society.

1.3 Technical Specification

37.5 kVA pad mounted transformer specifications type and data sheet

1.4 Drawings

37.5 kVA pad mounted transformer diagram drawing and size.

02 Manufacturing

2.1 Core

The wound core of the single-phase pad mounted transformer is precision-fabricated from high-grade grain-oriented silicon steel via continuous seamless coiling, eliminating the air gaps and joint losses inherent to traditional stacked cores. This streamlined structure boosts magnetic conductivity, slashes no-load losses and operational noise substantially, and ensures consistent magnetic flux distribution-enabling the transformer to deliver high energy efficiency and stable performance within its compact, outdoor enclosure.

2.2 Winding

Crafted from high-purity electrolytic copper, the windings of the single-phase pad mounted transformer are precision-wound around the wound core and wrapped in high-temperature-resistant insulating materials. This design minimizes electrical resistance, cuts down load losses significantly, and enhances overall conductivity, while the robust insulation layer boosts voltage endurance and corrosion resistance, ensuring stable, low-noise operation even in harsh outdoor conditions.

2.3 Tank

The tank of the single-phase pad mounted transformer is constructed from high-quality cold-rolled steel with anti-corrosion coating, featuring a fully sealed, IP-rated design that shields internal components from rain, dust, and external tampering. For oil-immersed models, it securely holds insulating oil to enable efficient heat dissipation and electrical insulation; integrated pressure relief devices further enhance operational safety. Its compact, low-profile structure fits seamlessly into outdoor residential and commercial settings, requiring minimal installation space.

2.4 IFD

The Internal Fault Detection (IFD) system of the single-phase pad mounted transformer is an integrated safety module that monitors internal operational anomalies in real time, including winding overheating, insulation degradation, and abnormal gas accumulation in oil-immersed models. It triggers immediate protective actions-such as automatic shutdown or alarm signals-upon detecting faults, preventing damage escalation and ensuring safe, uninterrupted power distribution even in harsh outdoor conditions.

2.5 Two-Position Loadbreak Switch

The two-position loadbreak switch for single-phase pad mounted transformers (model FYB-24(10)) is an oil-immersed type, using transformer oil as insulation and arc-extinguishing medium, paired with an energy-storing spring operating mechanism. Rated for 50Hz frequency and 10/24KV voltage, it safely switches on/off load current via two positions (ON: clockwise rotation; OFF: anticlockwise rotation, within 90°). Suitable for terminal or ring-network power distribution systems with optional configurations, it requires a dedicated insulated operating rod for operation and must not handle fault currents exceeding rated limits.

2.6

The LV bushing of the single-phase pad mounted transformer is a secondary-side low-voltage power lead-out component, rated at 1.2kV and 417A. It has a black insulation body, fits a 45±0.5mm tank hole, and meets specs like ≥25mm creep distance, 30kV impulse level, and 10kV wet withstand voltage-enabling safe insulation and reliable power transmission between the internal low-voltage winding and external circuits.

03 Testing

Single-phase pad mounted transformer tests (encompassing factory and type evaluations) cover core items: insulation withstand voltage tests (verifying electrical insulation strength against rated impulse/wet voltages), no-load/load loss tests (confirming energy efficiency compliance), functional tests (validating loadbreak switch operation and IFD fault response), and environmental tests (validating IP enclosure protection and weather resistance). Aligned with ANSI/IEEE standards, these tests ensure the transformer’s safe, reliable outdoor performance.

04 Packing and Shipping

05 Site And Summary

For commercial complexes, residential neighborhoods, or light industrial facilities that demand reliable, space-efficient single-phase power distribution, SCOTECH’s single phase pad mounted transformer stands as a benchmark of performance and durability. Engineered with a compact, corrosion-resistant enclosure, low-loss core and coil components, and hassle-free installation features, it delivers consistent power while minimizing long-term maintenance costs.

At SCOTECH, we prioritize not just product excellence, but also tailored support-from custom voltage configurations to on-demand technical guidance. Whether you’re upgrading existing infrastructure or building new power grids, our transformers are designed to adapt to your unique requirements, ensuring uninterrupted energy flow for every application.