Name: China Customized Power Transformer with Oltc Manufacturers Suppliers Factory - Good Price - Transpower
Brand: Trans
SKU: 246751386

Transpower Electrical Equipment Co., Ltd. is one of the most reliable manufacturers and suppliers of power transformer with oltc in China. Welcome to buy high quality customized products at competitive price from our factory. Contact us for quotation.

Power Transformer With Oltc

Power Transformer with OLTC is a specially designed transformer by TRANSpower Electrical for systems requiring on-line voltage regulation. The company is committed to providing high-performance power equipment that complies with international standards such as IEC, ANSI/IEEE, CSA, etc. The Power Transformer with OLTC is available in capacities ranging from 35kV to 220kV, making it suitable for applications that require precise voltage regulation.

Products Description

The Power Transformer with OLTC is equipped with an advanced load tap changer (OLTC) that enables the user to adjust the voltage during operation. The transformer is made of high-quality silicon steel sheets and copper wires, and its core design ensures efficient electromagnetic conversion performance. The oil tank is treated against corrosion and the internal insulation ensures excellent heat resistance and long-term reliability.

The Power Transformer with OLTC provides precise voltage regulation to ensure stable power system operation under various load conditions. Its efficient load response and regulation reduces system failures and lowers maintenance costs. The transformer's resistance to short circuits and overloads enhances the overall reliability of the system.

Power Transformer with OLTC is mainly used in power systems that require frequent voltage adjustments, such as electric utilities, industrial facilities and large commercial buildings. Its excellent performance ensures efficient and stable operation of the power system under various operating conditions, and it is especially suitable for scenarios with large load fluctuations in the power grid.

Power Transformer with Oltc

Industry-specific attributes
Product	Power Transformer with Oltc
Phase	Three phase
Coil Structure	Toroidal
Coil Number	Double winding or Triple winding
Other attributes
Place of Origin	Zhejiang, China
Model Number	Three phase Power Transformer with Oltc (As per customer requirements)
Rated capacity	From 6300kva to 180mva
High Voltage	From 33kV to 220kV
Medium Voltage	36/37/38.5/66/69/115/121kV
Low Voltage	From 6.3kV to 69kV
Frequency	50/60Hz
Standard	IEC, ANSI, IEEE, CSA
Vector group	Yd11, YNd11, YNyn0d11, YNa0d11
Material	Aluminum/Copper
Application	Power plant (station), substation (power distribution stations), Urban power grids, Industrial facilities, Large-scale infrastructure projects
Type	Oil-immersed Transformer
Feature	Low Loss

product-778-644

Power Transformer with Oltc parameters

The following table lists the standard parameters for the 220kV Power Transformer with Oltc. If you require other capacities and voltage levels, please contact TRANSpower for accurate technical specifications and customized offers.

Below Specs Are ONLY For Reference.

CAPACITY (kVA)	Voltage ratio and tap range (kV)		Connection Symbol	No-load loss (kW)	Full-load loss (kW)	Impedance (%)	No-load current
CAPACITY (kVA)	HV	LV	Connection Symbol	No-load loss (kW)	Full-load loss (kW)	Impedance (%)	No-load current
31500	220±8x1.25%	66.3; 6.6 10.5; 11 35; 37; 38.5	YNd11	38	135	12~14	0.70
40000				45	157		0.63
50000				54	189		0.56
63000				63	220		0.56
90000		10.5; 11 35; 37; 38.5		80	288		0.49
120000				99	346		0.49
150000				116	405		0.42
180000				135	468		0.42
120000		66 69		102	355		0.49
150000				120	415		0.42
180000				140	475		0.42

product-1033-729

10MVA 33kV Three Phase Power Transformer with Oltc dimensions and weight details

product-967-722

Frequently asked questions (FAQ)

Q: What are the disadvantages of OLTC transformers?

A: OLTC transformers are very complex due to their tapping mechanism, leading to increased costs, maintenance and potential reliability issues. Regular maintenance of these moving parts is essential to avoid interruptions and costly repairs. Their limited response time may not be sufficient to cope with rapid load changes or grid disturbances, resulting in transient voltage deviations. Mechanical components are prone to failure, especially under environmental stress, which can lead to downtime and loss of revenue. In addition, integrating OLTC transformers into existing systems may be difficult if the control and protection systems are not compatible.

Q: Which transformer can have tap changer?

A: A transformer tap changer is a rotary device that adjusts the number of turns on the primary coil to produce the correct secondary voltage. On most standard utility-grade floor-mounted transformers, the tap changer is located in the primary high-voltage cabinet of the transformer.

Q: Where is the OLTC in a transformer?

A: OLTCs are typically installed on the primary side of power transformers. It is preferred to switch lower load currents on the primary side as this reduces switching arcs.

Q: Why is OLTC on the HV side?

A: The on-load tap-changer (or circuit tap-changer), as the name suggests, allows the voltage to be regulated by tap-changeover when the transformer is loaded. Tap changing is usually carried out on the high-voltage winding for two reasons: Due to the low current, the tap changer contacts, leads, etc. can be small.

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