ONAN Electrical Power Transformer Factory 12470v 75KVA 300kva 500kva Three Phase Pad Mounted Transformer

Overview of ONAN Electrical Power Transformer Factory 12470v 75KVA 300kva 500kva Three Phase Pad Mounted Transformer

ONAN Electrical Power Transformer Factory 12470v 75KVA 300kva 500kva Three Phase Pad Mounted Transformer is an enclosed, ground-level electrical distribution transformer commonly used in underground (UG) power systems. It steps down primary high-voltage electricity (e.g., 15kV or 25kV) to a lower secondary voltage (e.g., 120/240V or 480V) for safe distribution to residential neighborhoods, commercial buildings, and industrial parks. Its robust, lockable steel enclosure makes it safe for public areas.

Features of ONAN Electrical Power Transformer Factory 12470v 75KVA 300kva 500kva Three Phase Pad Mounted Transformer

Ground-Level Enclosure: A locked, tamper-resistant, weatherproof steel cabinet that protects the internal components and ensures public safety.

Underground Cable Connections: Designed for easy connection to underground primary (high-voltage) and secondary (low-voltage) cables via compartments with built-in bushings.

Compartmentalization: Separate, isolated compartments for high-voltage and low-voltage components, enhancing safety during maintenance.

Ventilation: Designed with louvers or other ventilation systems to allow for proper heat dissipation from the transformer core and coils.

Lifting Lugs: Integrated lifting lugs for easy and safe installation and replacement using a crane or hoist.

Tamper-proof Hardware: Lockable doors with special bolts to prevent unauthorized access.

Fused Switches: Often includes fused disconnect switches for circuit protection and safe isolation.

Pad Foundation: Installed on a concrete pad (“pad-mounted”) to provide a stable, level base.

Specifications of ONAN Electrical Power Transformer Factory 12470v 75KVA 300kva 500kva Three Phase Pad Mounted Transformer

ONAN Electrical Power Transformer Factory makes pad-mounted transformers. These units handle three-phase power. They come in 75 KVA, 300 KVA, and 500 KVA sizes. The primary voltage rating is 12470 volts. These transformers step down voltage for distribution.

Standard secondary voltages include 480Y/277 volts. Other voltages are available. The cooling type is ONAN. This means oil natural, air natural. The oil cools the core and coils. Air cools the outside tank. The design is efficient and quiet.

The transformer tank is welded steel. It is strong and leak-proof. The tank holds high-grade mineral oil. This oil insulates and cools the internal parts. The tank is painted for outdoor protection. The paint resists rust and weather.

The core uses high-quality electrical steel. This steel reduces energy losses. The coils are wound from copper or aluminum conductor. They are insulated for safety and long life. The design ensures low operating temperatures. The standard temperature rise is 65°C.

These transformers include pressure relief devices. These devices protect the tank. They also have lifting lugs. Lifting lugs make installation easier. The units are filled with oil and tested before shipping. This ensures they work correctly.

The bushings are mounted on the cover. High-voltage bushings connect to the primary side. Low-voltage bushings connect to the secondary side. The bushings are porcelain or polymer. They are reliable in different weather.

These pad-mounted transformers suit many places. They work well for commercial buildings, industrial plants, and housing developments. They provide safe power distribution. They meet industry standards like ANSI and IEEE. They are built for reliability and long service.

Applications of ONAN Electrical Power Transformer Factory 12470v 75KVA 300kva 500kva Three Phase Pad Mounted Transformer

ONAN Electrical Power Transformer Factory makes pad mounted transformers. These units handle electricity safely outdoors. They work well for different power needs. The 12470v models come in 75kVA, 300kVA, and 500kVA sizes. Three phase power is standard. These transformers are tough. They sit directly on concrete pads.

The 75kVA transformer suits smaller projects. It powers groups of houses or small apartment buildings. It fits well in tight spots. Small commercial buildings use it too. Think small offices or shops needing reliable power. It delivers enough electricity without taking much space.

The 300kVA model handles bigger demands. Larger stores or shopping centers often choose this size. It powers lighting, cash registers, and heating systems easily. Light industrial sites rely on it. Warehouses and small factories find it dependable. It supports equipment without strain.

The 500kVA transformer is for heavy use. Big industrial complexes need this capacity. It runs large machinery and manufacturing lines. Major commercial developments use it. Think big malls or office parks. It provides the high power these places demand.

All these transformers are built for safety. They contain the oil and electrical parts securely. People and animals stay safe around them. They withstand weather and temperature changes. Rain, snow, or heat won’t stop them. The design prevents tampering and vandalism. Access requires special tools. Utility workers can maintain them easily. They are crucial links in power distribution networks. They step down voltage safely for local use. They keep electricity flowing where people live and work. They offer a practical solution for many power setups.

Company Profile

PDDN Photoelectron Technology Co., Ltd. is one of the leading enterprises in power electronics technology and power products, which is fully involved in developing solar inverters， transformers, voltage regulators, distribution cabinets, thyristors， modules， diodes， heaters, and other electronic devices or semiconductors. We will be committed to providing users with high-quality, efficient products and considerate service.

It accepts payment via Credit Card, T/T, West Union, and Paypal. PDDN will ship the goods to customers overseas through FedEx, DHL, by sea, or by air. If you want high-quality ONAN Electrical Power Transformer Factory 12470v 75KVA 300kva 500kva Three Phase Pad Mounted Transformer, please send us inquiries; we will be here to help you.

Payment Methods

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment

By sea, by air, by express, as customers request.

Storage Conditions

1) Store in a dry environment at room temperature.

2) Avoid damp and high temperature.

3) Use immediately after opening the inner packing bag.

5 FAQs of ONAN Electrical Power Transformer Factory 12470v 75KVA 300kva 500kva Three Phase Pad Mounted Transformer

ONAN Electrical Power Transformer Factory: 12470V Pad Mounted Transformer FAQs

What are the main specs for these transformers?
These transformers handle 12470 volts. They come in three sizes: 75KVA, 300KVA, and 500KVA. They are three-phase units. They are pad-mounted. This means they sit on a concrete base outside. They step down high voltage for local power distribution.

How is safety managed?
The transformer has a strong steel case. This case protects the internal parts. It stops people or animals touching live parts. The case is tamper-proof. Workers need special tools to open it. This keeps everyone safe. The case also protects against weather damage.

What about installation?
Installation needs a solid concrete pad. The pad size depends on the transformer size. Our factory provides exact pad dimensions. Qualified electrical workers must do the installation. They connect the high-voltage lines and the low-voltage output. They must follow local electrical codes exactly. Proper grounding is critical.

How does cooling work?
These transformers use oil for cooling. Oil circulates inside the sealed tank. It absorbs heat from the core and windings. The oil then releases heat through the tank walls. This method is called ONAN (Oil Natural, Air Natural). It works reliably and quietly. No fans or pumps are needed. This makes it low maintenance.

What ensures long life?
The transformer core uses high-grade steel. The windings use copper or aluminum. These materials are chosen for durability. The tank is sealed tight. This keeps moisture and dirt out. The oil stays clean inside. The whole unit is built tough. It handles outdoor conditions well. It meets IEEE standards for reliability. Regular checks help it last decades.