220kv three-phase oil-immersed on-load voltage regulating transformer Oil Transformer

Short Description:

220kv three-phase oil-immersed on-load tap-changing transformer has brought a series of major changes in materials, technology, structure, etc. It is characterized by compact structure, light weight, high efficiency, low loss, low noise and reliable performance. This product can greatly reduce power grid loss and operating costs, and has significant economic benefits.

Application scenario:

product details

Overview details

The products comply with the following national standards: GB1094.1-2013 Power transformers Part 1: General; GB1094.2-2013 Power transformers Part 2. Temperature rise; GB1094.3-2003 Power transformers Part 3: Insulation levels, dielectric tests and external tolerance in air; GB1094.5-2003 Power transformers Part 5: Short-circuit withstand capability; GB/6451-2015 Specifications and technical requirements for three-phase oil-immersed power transformers.

Technical parameter

220kv three-phase oil-immersed on-load voltage regulating transformer
Rated capacity (kVA)	Voltage Group		Vector set	No-load loss	Load loss	No-load current	Short circuit impedance
Rated capacity (kVA)	high pressure (kV)	Low pressure k(V)	Vector set	kW	kW	%	Short circuit impedance
31500		6.3 6.6 10.5 11	YNd11	28	128	0.56	12-14
40000				32	149	0.56
50000				39	179	0.52
63000				46	209	0.52
75000		10.5 13.8		53	237	0.48
90000				64	273	0.44
120000				75	338	0.44
150000	220±2*2.5%	10.5，11，13.8		89	400	0.40
160000	242±2*2.5%	15.75		93	420	0.39
180000		18，20		102	459	0.36
240000				128	538	0.33
300000		13.8 15.75 18 21		154	641	0.30
360000				17	735	0.30
370000				176	750	0.30
400000				187	795	0.28
420000				193	824	0.28

Note 1: Transformers with rated capacity below 31500kVA and other voltage combinations can also be provided upon request.
Note 2: 35 kV or 38.5 kV low voltage transformers can also be provided upon request.
Note 3: A non-split structure is preferred. Sub-connectors may be provided if necessary.
Note 4: When the annual average load rate of the transformer is between 45% and 50%, the loss value in the table can be used to calculate the maximum operating efficiency.

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FAQ

1.What are our main products?

Primary and secondary equipment prefabrication compartment, photovoltaic booster substation, photovoltaic grid-connected cabinet, parallel cage, PV combiner box, MCCB,MCB,The surge protector，tec.
2. If I go to China, can I visit your factory?

Welcome, our company and factory are located in Wenzhou, Zhejiang, China. You can visit us at any time
3. Can the product be used in harsh environments?

Our prefabricated compartments for primary and secondary equipment are constructed entirely from metal, ensuring durability and reliability. These compartments are well-suited for operation in demanding environments, including high-temperature zones and arid deserts. The all-metal design provides excellent resistance against the elements, maintaining the integrity and functionality of the enclosed equipment even under severe conditions.