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 strong pad-mounted transformers. These units handle three-phase electrical systems. They work well stepping down power for businesses and neighborhoods. The primary voltage rating is 12470 volts. Common secondary voltages are 480Y/277 volts or 208Y/120 volts. We offer different sizes: 75 kVA, 300 kVA, and 500 kVA. Pick the size matching your power needs.

These transformers use oil for cooling. This is the ONAN method (Oil Natural, Air Natural). The oil circulates naturally inside. Air cools the outside tank surface. This design is reliable and quiet. It needs little maintenance. The core and coils sit inside a sturdy steel tank. The tank holds the cooling oil. It protects the internal parts from weather.

Safety is important. Primary bushings often have built-in current-limiting fuses. These fuses protect the transformer. A pressure relief device is standard. It vents if internal pressure gets too high. This stops tank damage. Transformers meet high impulse withstand levels (BIL). They resist voltage surges from lightning or switching. Units follow IEEE standards like C57.12.00 and C57.12.20. They pass all factory tests before shipping.

Installation is simple. The transformer sits on a concrete pad. It’s ready for pad mounting. Terminations are accessible. They connect easily to underground cables. The tank has good corrosion protection. A grounding pad is provided. You connect your ground wire here. This ensures safe operation. The low profile suits many locations.

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

ONAN Electrical Power Transformer Factory makes three-phase pad mounted transformers. These units handle 12470 volts primary voltage. Common sizes are 75KVA, 300KVA, and 500KVA. They step down the high incoming voltage. They provide safer, usable power for many places. You see them often in shopping centers and strip malls. They power the lights, the stores, the air conditioning. They are vital for office buildings and business parks. They supply electricity to computers, servers, and lighting systems. Apartment complexes and condominiums need them too. They distribute power to individual units and common areas. Schools and universities rely on these transformers. They run classrooms, labs, and athletic facilities. Hospitals and clinics use them for critical equipment. They ensure reliable power for patient care. Smaller factories and workshops install these pad mounts. They power machinery, tools, and lighting safely. The 75KVA size is good for smaller needs. Think a few stores or a medium office building. The 300KVA unit handles larger demands. It suits bigger retail centers or apartment blocks. The 500KVA transformer powers substantial loads. It works for large commercial buildings or light industrial sites. These transformers sit on concrete pads outdoors. They are self-contained and weatherproof. This makes installation simple. They connect directly to the utility’s medium-voltage lines. They deliver standard low-voltage power inside. Common outputs are 480V or 208Y/120V. They are robust and built for long life. They need little maintenance. Proper ventilation is important. Keep the area clear around them. They are a key link in getting power where it’s used. They safely bring electricity from the grid to the doorstep. They keep businesses running and lights on reliably.

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

Here are five common questions about ONAN’s 12470V Pad Mounted Transformers (75KVA, 300KVA, 500KVA):

What is this transformer used for? This transformer steps down high voltage electricity. It takes 12470 volts from the utility line. It changes it to lower voltages usable by homes or businesses. It’s for underground power distribution systems.

Where do you install it? Install it outdoors at ground level. You see these units near buildings or along streets. They are placed on concrete pads. Their green, lockable steel enclosure protects the transformer. It keeps people safe and the equipment secure.

What makes ONAN’s pad mounts reliable? They use high-quality electrical steel cores. The copper windings are efficient. The units have durable, corrosion-resistant tanks. They are filled with high-grade dielectric fluid. This design ensures stable power and long life. It handles varying loads well.

How do you install one safely? Proper installation is critical. You need a solid, level concrete pad. Follow local electrical codes exactly. Only qualified utility personnel should connect the high-voltage cables. Ensure good ventilation around the unit. Leave space for maintenance access.

What maintenance is required? Regular checks are important. Look for oil leaks around the tank. Check the fluid level using the gauge. Inspect the enclosure for damage or rust. Listen for unusual humming or buzzing sounds. Professionals should do detailed inspections and oil testing periodically.