UL/CUL Certification 3 Phase 50KVA 100KVA 150KVA 250KVA 300KVA 400KVA 450KVA 500KVA 20KV 200KVA Transformers for Industrial

Overview of UL/CUL Certification 3 Phase 50KVA 100KVA 150KVA 250KVA 300KVA 400KVA 450KVA 500KVA 20KV 200KVA Transformers for Industrial

An oil-immersed transformer is a type of electrical transformer where the core and windings are submerged in an insulating oil. This oil serves two primary functions: it acts as a highly effective insulator between conductive parts and as a coolant to dissipate heat generated during operation. These transformers are robust, reliable, and highly efficient, making them the standard choice for high-voltage power distribution and transmission networks, typically installed outdoors in substations.

Features of UL/CUL Certification 3 Phase 50KVA 100KVA 150KVA 250KVA 300KVA 400KVA 450KVA 500KVA 20KV 200KVA Transformers for Industrial

• Effective Cooling: The insulating oil efficiently absorbs heat from the core and windings and transfers it to the radiator fins, allowing for natural or forced circulation and higher overload capacity.
• Superior Insulation: The oil provides much better dielectric strength than air, allowing for a more compact design for a given voltage rating and protecting against short circuits.
• Robust Construction: Designed for long-term, reliable operation (often 25-30 years) in harsh outdoor environments.
• Overload Capacity: Can handle temporary power overloads better than dry-type transformers due to the thermal mass and cooling properties of the oil.
• Protection System: Equipped with a conservator tank (to allow for oil expansion), breather (to absorb moisture from air), and protective relays (Buchholz relay) for internal fault detection.
• Cost-Effective: Generally more economical for high-power applications compared to dry-type transformers.

Specifications of UL/CUL Certification 3 Phase 50KVA 100KVA 150KVA 250KVA 300KVA 400KVA 450KVA 500KVA 20KV 200KVA Transformers for Industrial

These transformers carry UL and CUL certification. This means they meet strict safety standards. They are designed for tough industrial settings. You get different power levels: 50KVA, 100KVA, 150KVA, 200KVA, 250KVA, 300KVA, 400KVA, 450KVA, and 500KVA. This range covers many industrial power needs. They are built for three-phase electrical systems. This is the standard for factories and large buildings. The primary voltage rating is 20KV. This handles common medium-voltage distribution lines.

The core uses high-grade electrical steel. This minimizes energy losses. It makes the transformer efficient. Copper or aluminum windings are standard. Both are chosen for reliable performance. The design focuses on low temperature rise. This extends the transformer’s life. Cooling is usually ONAN (Oil Natural Air Natural). This is simple and reliable for most indoor or sheltered uses. The oil provides insulation and cooling. The tank is welded steel. It is robust and leak-proof. It often includes a pressure relief device. This adds safety protection.

These units meet IEEE C57 standards. These are key industry benchmarks. They also follow NEMA requirements. The enclosure is typically NEMA 3R. This protects against rain and sleet. It is suitable for outdoor pad mounting. Connections are made through bushings. These are accessible for wiring. Options include dial thermometers or remote temperature monitoring. You can also get pressure gauges. These features help with maintenance. They allow you to monitor the transformer’s health.

These transformers are built for reliability. The UL/CUL mark proves their safety testing. They deliver consistent power. They are ideal for factories, processing plants, large commercial buildings, hospitals, and data centers. They handle the heavy loads typical in these places. You get a durable, efficient power solution.

Applications of UL/CUL Certification 3 Phase 50KVA 100KVA 150KVA 250KVA 300KVA 400KVA 450KVA 500KVA 20KV 200KVA Transformers for Industrial

UL/CUL certified 3-phase transformers from 50kVA to 500kVA, rated at 20kV, are built tough for demanding industrial settings. This certification means they meet strict North American safety standards. Factories trust them for reliable power distribution. They power heavy machinery reliably. These units efficiently step down high voltage (20kV) to usable levels within a plant. Common sizes include 100kVA, 200KVA, 250kVA, 300kVA, 400kVA, 450kVA, and 500kVA. They handle large motor loads without issue. Large manufacturing plants rely on them constantly. They ensure consistent power for assembly lines. Production stops cost money. These transformers help prevent costly downtime.

Mines and oil fields use them in harsh environments. The UL/CUL mark confirms their safety in these tough conditions. They resist vibration and dirt well. Water treatment facilities need dependable power. These transformers deliver it safely. Large commercial buildings use them for central power systems. They manage the electrical load for HVAC and lighting efficiently. Data centers demand stable, clean power. These transformers provide a solid foundation for critical IT infrastructure. Power outages are unacceptable there. The certification proves rigorous testing.

Renewable energy projects integrate them too. They connect solar farms or wind turbines to the grid reliably. Hospitals depend on them for essential power distribution. Patient safety requires absolute electrical reliability. The UL/CUL certification is mandatory for many installations. Insurance companies often require certified equipment. It reduces fire and shock risks significantly. These transformers are designed for long service life. They withstand industrial electrical stresses day after day. Choosing UL/CUL certified units means choosing proven safety and performance for heavy industry.

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 UL/CUL Certification 3 Phase 50KVA 100KVA 150KVA 250KVA 300KVA 400KVA 450KVA 500KVA 20KV 200KVA Transformers for Industrial, 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 UL/CUL Certification 3 Phase 50KVA 100KVA 150KVA 250KVA 300KVA 400KVA 450KVA 500KVA 20KV 200KVA Transformers for Industrial

UL/CUL Certified 3-Phase Transformers: 50KVA to 500KVA, 20KV – Key Questions

What is UL/CUL certification for these transformers?
UL/CUL certification means the transformer meets strict safety standards set by Underwriters Laboratories (UL) for the US and Canada (CUL). Independent testing labs check the design and construction. This proves the transformer is safe for industrial use in North America. It reduces fire and electrical shock risks.

Why is UL/CUL certification important for industrial transformers?
Industrial sites demand reliable, safe equipment. UL/CUL certification is mandatory for electrical equipment in many US and Canadian locations. Using certified transformers helps pass inspections. It minimizes legal liability and insurance issues. It protects workers and equipment from electrical hazards common in factories.

What does the “20KV” rating mean?
“20KV” means the transformer is designed to handle primary voltages up to 20,000 volts. This high voltage level is standard for feeding power into large industrial facilities from the utility grid. The transformer steps this high voltage down to safer, usable levels like 480V or 600V for factory machinery.

What applications fit the 50KVA to 500KVA range?
This range covers diverse industrial power needs. Smaller units (50KVA-150KVA) power specific machine groups or sections in a factory. Mid-size units (200KVA-300KVA) often handle whole departments or smaller factories. Larger units (400KVA-500KVA) serve as primary distribution transformers for entire medium-sized plants or heavy machinery clusters.

Do I need special installation for UL/CUL certified transformers?
Yes. Proper installation is crucial to maintain the certification’s validity and safety. Always follow the National Electrical Code (NEC) or Canadian Electrical Code (CEC). Use qualified electricians experienced with high-voltage industrial gear. The installation must match the transformer’s listed ratings and conditions. Incorrect installation voids the certification and creates safety risks.