High Voltage Power Transformer 63kV, 66kV, 69kV for Sale
Customized High Voltage Power Transformer 63kV, 66kV, 69kV China Factory Sale
High Voltage Power Transformers Manufacturer Wholesale Supply to USA, Russia
63kV 66kV 69kV High Voltage Power Transformer China Manufacturer Supply CE, UL, GOST
1 MVA-150 MVA High Voltage Power Transformers Manufacturer Best Production Factory
High Voltage Power Transformer 63kV, 66kV, 69kV for Sale
Customized High Voltage Power Transformer 63kV, 66kV, 69kV China Factory Sale
High Voltage Power Transformers Manufacturer Wholesale Supply to USA, Russia
63kV 66kV 69kV High Voltage Power Transformer China Manufacturer Supply CE, UL, GOST
1 MVA-150 MVA High Voltage Power Transformers Manufacturer Best Production Factory

63kv 66kv 69kv High Voltage Power Transformer Manufacturer

Primary Voltage: 63kV 66KV 69KV or Customizable
Secondary Voltage: 6.3kV,10.5kV,11kV or Customizable
CONNECTION TYPE: YNd11/YNyn0 or others
Standards: IEC, ANSI/IEEE, CSA/CAN
Power Rating: 6300 kVA-24 MVA
HV TAP RANGE: ± 8 × 1.25% oswa lòt moun
Certificate: ISO9001, ISO14001, CE, SGS，UL

EverNew designs 63kV, 66kV, and 69kV high voltage power transformers for efficient transmission and distribution. Manufactured by top Chinese factories, these transformers are rigorously tested and certified by IEEE, CSA, AS, and IEC standards. Ideal for utility, industrial, and commercial applications, they offer reliable performance at competitive factory direct pricing.

EverNew’s Advanced 66kV High Voltage Power Transformers for Efficient Power Transmission

In 2019, EverNew delivered three 66kV Class Three Phase Two Winding OLTC high voltage power transformers to our Chinese customers. These transformers, designed for secondary substations, feature a rated power of 200,000 kVA, with a primary voltage of 66kV and a secondary voltage of 11kV. As part of our commitment to cutting-edge technology, these transformers represent the latest generation of low-loss high voltage power transformers. Independently developed by EverNew, they incorporate both domestic and international advancements, ensuring exceptional efficiency and performance.

These high voltage power transformers are engineered to offer low partial discharge, reduced energy losses, and enhanced reliability. Their robust design also provides strong protection against sudden short circuits, making them ideal for demanding utility, industrial, and commercial applications. This successful project not only fulfilled our customers’ need for efficient, stable power transmission but also highlighted EverNew’s technical innovation and manufacturing excellence. It reinforced our position as a leader in the Chinese transformer market, demonstrating our capability to deliver reliable, state-of-the-art transformer solutions.

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High Voltage Power Transformers Manufacturer Wholesale Supply to USA, Russia
Customized High Voltage Power Transformer 63kV, 66kV, 69kV China Factory Sale
63kv 66kv 69kv High Voltage Power Transformer  Position in power system

In power systems, 66kV high voltage power transformers are commonly found in secondary substations, also known as intermediate substations. These transformers receive high-voltage electricity from primary substations and step it down to a lower voltage, making it suitable for the distribution network. This process ensures the efficient and reliable delivery of power to end users.

For more information on our 63kV, 66kV, and 69kV high voltage power transformers and repower systems, please contact us.

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High Voltage Power Transformer Protection Devices: Ensuring Safety and Reliability

  1. Pressure Relief Valve
    The pressure relief valve is a critical safety device in high voltage power transformers, designed to release internal pressure when it becomes too high, preventing potential transformer explosion.

    Principle: The valve operates as a safety mechanism. When the internal pressure exceeds the set limit, the valve automatically opens to discharge excess gas or oil vapor. This prevents further pressure buildup, ensuring both the safety of the transformer and the surrounding environment.

    Usage: Typically installed on the top or side of the transformer tank, the pressure relief valve requires regular inspection and maintenance to ensure its responsiveness and reliability.

  2. Gas Relay
    The gas relay is designed to monitor gas levels within the transformer oil, quickly detecting internal faults that could compromise the transformer’s performance.

    Principle: Installed on the pipeline between the transformer tank and the cooling system, the gas relay contains a float and electrical contacts. When a fault such as a short circuit or overload occurs, gas is generated and rises to the top of the tank, pushing the float down. This triggers the electrical contacts, sending an alarm or cutting off the power supply to prevent further damage.

    Application: Commonly used in oil-immersed high voltage power transformers, the gas relay ensures early detection of faults. Regular inspections and maintenance are necessary to maintain its accuracy and reliability.

  3. Temperature Monitor
    The temperature monitor is essential for real-time monitoring of the transformer’s temperature, helping to prevent overheating and ensure safe operation.

    Principle: Consisting of a temperature sensor and display, this device is installed on the transformer windings and oil tank surface. It continuously measures the transformer’s temperature and transmits the data to a display or control system. If the temperature exceeds the preset safety threshold, the system will trigger an alarm or activate cooling measures, such as starting a cooling fan or oil pump, to prevent overheating.

    Application: Widely used in high voltage power transformers, the temperature monitor is essential for maintaining safe operating conditions. Regular calibration and maintenance ensure its accuracy and quick response to temperature changes.

For more information on the protection devices and safety features in EverNew’s high voltage power transformers, contact us today. We prioritize the reliable operation and safety of our 63kV, 66kV, and 69kV transformers, ensuring optimal performance in all applications.

Read More：The Complete Guide to High Voltage Transformers

Technical Characteristics of 63kv 66kv 69kv High Voltage Power Transformer

The 63kV, 66kV, and 69kV high voltage power transformers are designed for efficient power transmission and distribution. These transformers offer low energy losses, high reliability, and enhanced overload and short-circuit resistance. With advanced protection devices such as pressure relief valves, gas relays, and temperature monitors, they ensure safe and stable operation in demanding environments. Ideal for industrial and utility applications, they meet international standards for performance and safety.

Learn More：What is a power plant transformer

Place of OriginJiangsu, China
Brand NameEverNew Transformer
Model Numberpower transformer
PhaseThree Phase
Coil Number3
Usepower
Coil Structurepie coil
Frequency50/60 Hz
StandardIEC60076
Rated capacity20mva
Winding material100%Copper
CertificationISO9001:2008
Primary voltage63kv 66kv 69kv
Secondary voltage11kv
TypeOil Immersed Power Transformer
AccessoriesStandard Configuration
Vector GroupDyn11/Yyn0/Yd11/YNd11
Cooling MethodONAN ONAF
Warranty2 Years

Voltage Level of 63kv 66kv 69kv High Voltage Power Transformer

The 63kV, 66kV, and 69kV high voltage power transformers are designed to operate at medium to high voltage levels, playing a crucial role in electrical transmission and distribution. These transformers are essential for stepping down high voltage from primary substations to levels suitable for secondary distribution. With precise voltage regulation, they ensure efficient power delivery across industrial, commercial, and utility networks. Their robust design and performance make them ideal for handling the voltage requirements of large-scale power systems, providing reliability and stability in high-demand environments.

Rated capacity
（kVA）		Voltage combination and tapping rangeLink group labelLoss (kW)No-load current（%）Short Circuit impedance （%）
high pressure (kV)High voltage tapping scopeLow pressure (kV)Load lossLoad lossType 911-inch
Type 911-inchType 911-inch
630063
66
69		±8×1.25%6.3
6.6
10.5
11		YNd111083634.20.750.69
8000129.642.740.5
1000014.211.350.447.80.70.56
1250016.813.459.856.8
1600020.216.173.569.80.650.52
200002419.289.184.6
2500028.422.7105.31000.60.48
3150033.726.9126.91200.550.44
4000040.332.2148.9141
5000047.638184.51750.50.410~12
6300056.244.9222.32110.450.36

Get Reliable and High-Performance 63kV, 66kV, and 69kV High Voltage Power Transformers from Evernew Transformer

Looking for high quality 63kV, 66kV, and 69kV high voltage power transformers? Look no further than Evernew Transformer, your trusted manufacturer and supplier. Our transformers are designed for reliable, efficient power transmission and distribution, offering low energy losses, enhanced safety features, and superior performance.

With certifications such as CE, UL, and GOST, our transformers meet international standards, ensuring their reliability and safety in various applications. Manufactured at our advanced factory, these high voltage power transformers are used across the globe, including the United States, Canada, Kazakhstan, Australia, and many more countries.

Contact Evernew Transformer today for competitive pricing, customized solutions, and expert support. Let us help you meet your power transmission needs with top-notch transformers that guarantee long-lasting, efficient performance worldwide.

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