220kv Power Transformers 25mva Oil Immersed Transformer

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio, Ore
• Phase: Three
• Model NO.: S
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001, CCC
• Usage: Power Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Application Field: Power Grid
• Capacity: 25mva
• Currency: RMB or USD
• Delivery Time: Depend on The Quantity
• Transportation: by Truck or by Sea
• Loading Port: It Depends
• Delivery Term: Fob,CIF,EXW,DAP
• Language: English,Chinese,Russian
• Transport Package: Wooden Case
• Specification: As required
• Trademark: HZEC
• Origin: China
• Production Capacity: 250 Sets/ Quarter

Product Description

Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable transformer manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations and high and low voltage complete sets of equipment.The equipment put into production and operation of the project advocates energy saving, intelligence, information and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center,with 71 utility model patents and 15 invention patents.With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC Products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa and other regions, covering more than 40 countries.



The 220kV transformer is a high-voltage oil-immersed transformer with a core-type structure. It can be classified by phase number into single-phase transformers and three-phase transformers; by voltage regulation method into on-load tap-changing transformers and no-load tap-changing transformers; by winding coupling method into power transformers and autotransformers; by the number of windings into double-winding, three-winding, and three-winding plus balance winding transformers. Additionally, it includes special types such as split transformers and combined transformers. The product is designed according to IEC international standards, IEEE standards, and current national standards.

Low Noise: Reduces noise pollution to the environment.
Low Partial Discharge: Ensures stable and reliable transformer operation.
Low Temperature Rise: Provides strong overload capacity.
Low Loss: Optimizes energy structure.
Leakage-Free: Ensures high sealing performance of the transformer.
Maintenance-Free: Reduces customer maintenance costs.
High Impedance: Offers high short-circuit resistance, providing transformer safety.
Smart Components: Incorporates intelligent substation design technolog 

Rated capacity(kVA)	Voltage ratio and tap rang(kV)		Connection symbol	No-load loss(kW)	Full-load loss(kW)	Impedance(%)	No-load current(%)
	HV	LV
31500	220 242±2x2.5%	6.3 6.6 10.5 11	YNd11	35	135	12-14	0.70
40000				41	157		0.70
50000				49	189		0.65
63000				58	220		0.65
75000		10.5 11 13.8		67	250		0.60
90000				77	288		0.55
120000				94	345		0.55
150000		11;13.8 15.75;20		112	405		0.50
180000				128	459		0.46
240000				160	567		0.42
300000		15.75; 18;20		189	675		0.38
360000				217	774		0.38