1mva 400kva 500kva 13.8kv 277/480y Pad-mounted Transformer with ul

Overview of 1mva 400kva 500kva 13.8kv 277/480y Pad-mounted Transformer with ul

1mva 400kva 500kva 13.8kv 277/480y Pad-mounted Transformer with ul 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 1mva 400kva 500kva 13.8kv 277/480y Pad-mounted Transformer with ul

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 1mva 400kva 500kva 13.8kv 277/480y Pad-mounted Transformer with ul

This transformer handles high power needs. It comes in different sizes. The biggest is 1MVA. The smaller options are 400kVA and 500kVA. It connects to high voltage lines. The primary voltage is 13.8kV. It steps down this voltage. The secondary voltage is 277/480Y. This voltage is common for buildings. It powers lights, motors, and equipment safely.

The transformer is pad-mounted. This means it sits on a concrete slab outside. The enclosure is very strong. It is made from welded steel. This protects the internal parts. The tank is weatherproof. Rain, snow, and dust stay out. The design prevents tampering. Tamper-proof bolts secure the cabinet. This protects people and the equipment.

Inside, the core and coils are high quality. They use electrical steel and copper or aluminum windings. These materials ensure efficient power transfer. They also keep energy losses low. The transformer includes pressure relief devices. These protect against internal faults. Bushings connect the high and low voltage cables. They are designed for reliability.

The transformer meets UL standards. UL certification is important. It proves the unit is safe. It confirms the design meets strict North American safety rules. This gives users confidence. The unit is built for long life. It requires little maintenance. Its robust construction handles tough conditions. It provides stable power distribution reliably.

Applications of 1mva 400kva 500kva 13.8kv 277/480y Pad-mounted Transformer with ul

These pad-mounted transformers step down power for everyday use. They handle 13.8kV on the high-voltage side. They deliver 277/480 volts wye configuration on the low-voltage side. This voltage is standard in many commercial and industrial buildings in North America. These units carry UL listing. This means they meet strict safety standards.

You find these transformers serving critical power needs. The 400kVA size works well for smaller commercial buildings. Think shopping centers or office parks. It powers lighting, HVAC, and office equipment. The 500kVA model suits medium-sized facilities. Examples include large retail stores or light manufacturing plants. It provides ample capacity for machinery and processes. The larger 1MVA (1000kVA) unit powers heavy loads. It supports large industrial complexes, data centers, or big hospitals. It feeds substantial machinery and essential systems.

These transformers sit outdoors on concrete pads. Their design is compact and self-contained. This saves valuable space. The locked steel enclosure protects internal components. This prevents unauthorized access. It keeps people safe from high voltage. The enclosure is weatherproof. It withstands rain, snow, dust, and sun exposure. This ensures reliable operation in tough conditions. Pad-mounting keeps them accessible for maintenance. Technicians can easily service them when needed.

The 277/480Y secondary voltage offers flexibility. It directly powers 480V motors and heavy equipment. The 277V phase-to-neutral voltage runs lighting and outlets efficiently. This wye configuration balances loads effectively. These transformers are built for long-term reliability. They form the backbone of local power distribution networks. They deliver electricity safely to where it’s used most. They are essential for modern infrastructure.

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 1mva 400kva 500kva 13.8kv 277/480y Pad-mounted Transformer with ul, 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 1mva 400kva 500kva 13.8kv 277/480y Pad-mounted Transformer with ul

What is this pad-mounted transformer?
It steps down high voltage electricity. It takes 13,800 volts from power lines. It outputs safer 277/480 volt power for buildings. It sits inside a locked metal box at ground level. You see these boxes near homes or businesses.

Where is this transformer used?
It feeds power to many buildings. It powers shopping centers, apartment complexes, factories, schools. It’s placed outdoors. It connects to underground power lines. It supplies the main power for a whole property.

Why is UL listing important?
UL listing means it passed strict safety tests. Independent labs checked it. It meets recognized safety standards in North America. This ensures reliable operation. It protects people and property. Utilities often require UL listed equipment.

What do 13.8kV and 277/480Y mean?
13.8kV is the input voltage. It’s the high voltage from the utility line feeding the transformer. 277/480Y is the output voltage. It provides three-phase power. The voltage between any phase wire and neutral is 277 volts. The voltage between any two phase wires is 480 volts. The “Y” means the windings are connected in a wye configuration.

How do I pick the right size (400kVA, 500kVA, 1MVA)?
Match the size to your building’s power needs. Calculate the total load your building requires. Include all machinery, lighting, HVAC. Add some extra capacity for future growth. A 400kVA unit suits medium loads. A 500kVA unit handles larger demands. A 1MVA (1000kVA) unit powers very large facilities. Your electrical engineer determines the exact size needed.