Three Phase 35KV 66KV 110KV 220KV 230KV 8mva 10mva 12.5mva 20mva 25mva 40mva 63mva 100mva 250mva 330mva Mv&hv Power Transformer

Overview of Three Phase 35KV 66KV 110KV 220KV 230KV 8mva 10mva 12.5mva 20mva 25mva 40mva 63mva 100mva 250mva 330mva Mv&hv Power Transformer

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 Three Phase 35KV 66KV 110KV 220KV 230KV 8mva 10mva 12.5mva 20mva 25mva 40mva 63mva 100mva 250mva 330mva Mv&hv Power Transformer

• 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 Three Phase 35KV 66KV 110KV 220KV 230KV 8mva 10mva 12.5mva 20mva 25mva 40mva 63mva 100mva 250mva 330mva Mv&hv Power Transformer

These transformers handle high voltage power transmission efficiently. They work at 35KV, 66KV, 110KV, 220KV, and 230KV levels. Power ratings range widely from 8MVA up to 330MVA. Common sizes include 8MVA, 10MVA, 12.5MVA, 20MVA, 25MVA, 40MVA, 63MVA, 100MVA, 250MVA, and 330MVA. They are built for three-phase electrical systems.

These units step voltage up or down in substations and power grids. They connect generation plants to distribution networks. Their design prioritizes minimal energy loss. This saves operational costs over time. Efficient cooling is crucial. Options include ONAN (oil-natural, air-natural) or ONAF (oil-natural, air-forced) systems. Larger units often use forced cooling.

The core uses top-quality grain-oriented silicon steel. This reduces magnetic losses significantly. Windings are copper or aluminum. They are carefully insulated. The transformer oil provides insulation and cooling. It must be kept clean and dry. Bushings safely connect the high voltage cables. Tap changers adjust the output voltage. This compensates for grid fluctuations. Load fluctuations are managed well.

These transformers are tough. They handle demanding grid conditions. They resist short circuits and overloads. Strict quality control happens during manufacturing. Tests include routine checks and special type tests. Impulse and temperature rise tests verify safety. Standards like IEC or IEEE are followed closely. This ensures reliability and long service life.

Installation needs proper planning. Foundations must support the heavy weight. Skilled technicians handle the oil filling and connections. Regular maintenance is essential. Oil testing checks insulation health. Visual inspections spot leaks or damage. Protective relays monitor operation constantly. They trigger shutdowns if problems occur. Technical support and spare parts are available. This guarantees continuous power supply.

Applications of Three Phase 35KV 66KV 110KV 220KV 230KV 8mva 10mva 12.5mva 20mva 25mva 40mva 63mva 100mva 250mva 330mva Mv&hv Power Transformer

Three phase power transformers handle high voltages like 35KV, 66KV, 110KV, 220KV, 230KV, and 330KV. They manage large amounts of power, rated from 8MVA up to 330MVA. These units are vital for moving electricity efficiently over long distances. They connect power plants to the grid and link different parts of the transmission network.

Transformers rated 35KV or 66KV are common in distribution networks. They step down voltage for local use. Capacities like 8MVA, 10MVA, 12.5MVA, or 20MVA suit substations feeding towns or large industrial sites. Factories needing significant power often use these directly.

Higher voltages like 110KV involve transformers for sub-transmission. Units around 25MVA, 40MVA, or 63MVA are typical here. They move power from major substations closer to city centers before further stepping down.

The backbone of the grid uses 220KV, 230KV, and 330KV levels. These handle bulk power transfer across regions or countries. Large power plants connect through massive transformers. Sizes like 100MVA, 250MVA, or 330MVA are standard. They feed directly into the high-voltage transmission lines. Interconnecting separate power grids also requires these very large units.

Specific applications depend on the exact voltage and MVA rating. A 25MVA, 66KV transformer might serve a large factory. A 100MVA, 220KV unit connects a power station. A 250MVA or 330MVA, 330KV transformer is crucial for national grid interconnections. They minimize energy loss during transmission. Their reliability is critical for stable power supply everywhere. Utilities and industries rely on these transformers daily. They form the essential links moving electricity from generation to consumers.

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 Three Phase 35KV 66KV 110KV 220KV 230KV 8mva 10mva 12.5mva 20mva 25mva 40mva 63mva 100mva 250mva 330mva Mv&hv Power 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 Three Phase 35KV 66KV 110KV 220KV 230KV 8mva 10mva 12.5mva 20mva 25mva 40mva 63mva 100mva 250mva 330mva Mv&hv Power Transformer

What voltages do these transformers handle?
These three-phase transformers manage high voltages. They work with 35KV, 66KV, 110KV, 220KV, 230KV. They step electricity up or down at these transmission and sub-transmission levels.

How do I choose the right capacity (MVA)?
Pick the capacity based on your power load. We offer units from 8MVA up to 330MVA. Common sizes include 10MVA, 12.5MVA, 20MVA, 25MVA, 40MVA, 63MVA, 100MVA, 250MVA. Your total power demand determines the size you need. Oversizing wastes money. Undersizing causes overloads.

What space is needed for installation?
These are large, heavy units. They require significant space. You need a strong, level foundation. Installation needs trained crews and heavy lifting gear. Always follow the manufacturer’s layout drawings. Ensure proper clearances for safety and cooling.

Is maintenance difficult?
These transformers need regular checks. Maintenance is essential for long life. Key tasks include checking oil levels, testing oil quality, inspecting bushings and cooling systems. Good maintenance prevents failures. It keeps the transformer running reliably for decades.

Can I get a custom design?
Yes, manufacturers often build to order. Standard designs exist. Specific site conditions or special needs may require customization. You can request changes to things like impedance, cooling type, or tap changers. Discuss your exact requirements early.