8618658827883
tongchao@weshare-china.com
enLanguage

Transformer Tap Changer

Your Professional Transformer Tap Changer Supplier
 

Hangzhou Weshare Import & Export Co.,Ltd. is a leading Chinese manufacturer and exporter of transformer components, electrical insulation materials and consulting company. Weshare founded in 2005 by one specialized sales in transformer accessories. Most of our products are used in oil and dry transformers, electrical motors, generators and electronic products.Our mission is to ensure appropriate product quality while satisfying the needs of our customers is our prime objective and represents the core principle of our business activities.

 

 
 
Why Choose Us

Quality Assurance

Certified by UL, SGS, and ISO9001, Weshare upholds stringent quality standards.

 

Extensive Experience

Weshare, since 2005, excels in transformer accessories and electrical engineering.

Export markets

With a strong focus on export markets, we have successfully captured significant market share in East Asia, North Europe, the Middle East, South America, Egypt, and East Africa. Our dedication to ensuring appropriate product quality while meeting customer needs is the cornerstone of our business philosophy.

Product Application

Our company boasts a wide array of products used in oil and dry transformers, electrical motors, generators, and electronic devices.

 

 

 

 
 
Advantages of Transformer Tap Changer
无载分接开关说明

Voltage Regulation

Tap changers adjust the voltage ratio of the transformer by changing the number of turns in the windings, allowing for precise voltage control.

 

变压器分接开关

Enhancing Power Quality

Tap changers help mitigate issues like voltage sags, swells, and flickers caused by load changes or power supply variations, thus improving power quality.

变压器分接开关

Maintaining Stability and Reliability

By regulating voltage, tap changers help maintain the stability of the power system.

变压器无载分接开关

Optimizing System Performance

Accurate voltage control facilitated by tap changers can reduce losses in the power system, improving overall efficiency.

 

Types of Transformer Tap Changer

 

Non-excitation Tap Changer (Off-load Tap Changer)

The non-excitation tap changer regulates voltage by changing the tap on the high-voltage side of the transformer. It adjusts the turns ratio of the winding when both the primary and secondary sides of the transformer are disconnected from the power supply. This type of tap changer is typically operated when the transformer is not under load.

 

On-load Tap Changer

The on-load tap changer adjusts the tap of the transformer winding to regulate voltage while the transformer is under load. Unlike the non-excitation tap changer, it changes the number of high-voltage turns without interrupting the load current. This tap changer allows for voltage regulation without disrupting the power supply to connected equipment.

 

How Does Transformer Tap Changer Work

 

A tap changer typically comprises multiple taps, each connected to a different winding of the transformer. By selecting different taps, the effective number of turns of the winding can be altered, thus changing the output voltage of the transformer.

 

The tap changer's operating mechanism includes a corresponding control circuit to facilitate switching control. These control circuits can be implemented manually or automatically. In the case of pad-mounted transformer tap changers, manual operation is commonly employed.

 

During the switching process, the tap changer connects or disconnects different taps via a contactor. When the tap changer is connected to a specific tap, the corresponding winding engages in power conversion, thereby adjusting the output voltage.

 

The tap changer's connection mode typically involves switching between star and delta connections, or vice versa. This switching alters the configuration of the transformer's windings, consequently changing the quantity and magnitude of the output voltage.

 

During operation, it's crucial to consider the rated current and rated voltage of the tap changer to ensure the transformer operates normally and avoids overloading.

 

By employing the principles outlined above, the tap changer can effectively modify the transformer's output voltage to accommodate varying load requirements, thereby enhancing the flexibility and adaptability of the transformer.

 

Application of Transformer Tap Changer
 
 
 

Distribution Transformers

Tap changers in distribution transformers are vital for supplying electricity to homes, businesses, and industries. They ensure that voltage levels remain within acceptable limits, regardless of load fluctuations or grid disturbances.

 
 

Substation Transformers

Power transformers in substations often use tap changers to regulate voltage levels in high-voltage transmission networks. This is crucial for efficient long-distance power transmission and grid synchronization.

 
 

Renewable Energy Integration

With the growing integration of renewable energy sources like wind and solar, tap changers are essential for accommodating the variable power output from these sources. They help maintain grid stability when renewable generation fluctuates.

 
 

Industrial Applications

Industries with sensitive equipment rely on tap changers to provide consistent voltage levels, safeguarding their operations from voltage-related disruptions.

 

 

FAQ

 

Q: What is the function of a tap changer in a power transformer?

A: The purpose of a tap changer is to regulate the output voltage of a transformer. It does this by altering the number of turns in one winding and thereby changing the turns ratio of the transformer.

Q: Why tap changer on hv side of transformer?

A: In case of a step-down transformer, it is an added advantage to provide tapings on hv side. At light loads, the lv side voltage increases. It is required to decrease this voltage by adjusting the tapping on hv side to a position where a number of turns are large.

Q: Do all transformers have tap changers?

A: While all high voltage power transformers have tap changers, the low voltage transformers were built cost efficiently without tap changers. Nowadays, the ability to also adapt the voltage in medium voltage and low voltage networks becomes important due to the enormous growth of the renewable energy generation.

Q: On which side of the transformer is the tap changer provided?

A: Tap changer is a mechanical device which generally will use for connecting different turns in the circuit it can be on LV side or on HV side but mostly most part of the world will use this tap changer HV side only .

Q: Why tap changer in transformer?

A: The purpose of a tap changer is to regulate the output voltage of a transformer. It does this by altering the number of turns in one winding and thereby changing the turns ratio of the transformer.

As one of the leading transformer tap changer suppliers in China, we warmly welcome you to wholesale high-grade transformer tap changer made in China here from our factory. All our products are with high quality and competitive price.

transformer combiners, transformer cloud computing accessories, power transformer accessories