Large Capacity Electrical Power Transformer Three Phase High Voltage Reliable Operation

• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio, Wind Power
• Phase: Three
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC, Test Report
• Model NO.: EHV
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: EI
• Brand: Hfy
• Transport Package: Wooden Case Packages
• Specification: 1CBM to 15CBM
• Trademark: HFY
• Origin: China
• HS Code: 8504210000
• Production Capacity: 20000

Product Description

Large Capacity Electrical Power Transformer Three Phase EHV Reliable Operation

110kv Three Phase Oil-immersed Transformer
Product introduction

110kV three-phase oil immersed power transformer is manufactured according to IEC60076 standardof the Electrotechnical Commission and standards GB1094.1 ~ 2-1996 and GB1094.3.5-1985 with frequency of 50Hz, and is suitable for power transmission and transformation of industrial and agricultural power grid. The new series of 110kV power transformers are characterized by low noise, low partial discharge, low temperature rise, short circuit resistance, impact resistance, no leakage and beautiful appearance.
 

Product advantages

1. The core is made of high-quality cold-rolled grain oriented silicon steel sheet in a full inclined pore-free structure. Low magnetic steel plate is used for pulling plate, which firmly connects the upper and lower clamps with the core to form a steel structure.This structure generates less no-load loss and lower noise. The burr of silicon steel sheet shear port shall not be greater than 0.02mm. The no-load performance index is superior to the national standard of China.
2. According to the capacity of the transformer, the winding is made of cylinder, spiral, continuous and other structures. For the 110kV UHV transformer, the winding adopts tangled or inner screen structureso as to effectively improve the distribution of impulse voltage. The conductor uses transposed conductor or composite conductor to reduce the additional loss of the winding. Uses of computer simulation to calculate the impact characteristics of electric field and windingensures excellent electrical characteristics and impact strength of the winding. Effective measures are adopted in the process to ensure its safe and reliable operation.
3. The pressing structure of 110kV UHV Transformer body uses round insulating pressing plate. Adoption of theintegrated winding assemblyimproves the reliability of the product.
4. The oil tank is a flat top bell-type structure with folded-plate-type reinforcing iron welded on the tank wall,which improves the mechanical strength of the oil tank. In order to reduce the stray loss of the transformer, the inner wall of a large transformer is equipped with magnetic shield.
5. In order to prevent the displacement of 110kV UHV Transformerbody during transportation, a positioning device is set in the oil tank. A sealed oil conservator is used to isolate the transformer oil from the air to avoid moisture and oil aging. The end of oil conservatoris equipped with a pointer-type oil level gauge. According to the weight of the transformer oil, a pressure relief valve is installed on the top of the oil tank to ensure the safe operation of the product.
6. Cooling method is normally air-cooled or nature cooled (ONAF / ONAN) . The transformer operates 100% full load when ONAF and 80% of the full load when ONAN.
7. Heat dissipation uses sheet radiator, which generates compact shape. The sheet to sheet welding of the radiator is one-time forming, which is reliable. Adopted high-speed low-noise fangenerally blow in horizontal direction.
8. The start and stop of the fan is controlled by oil temperature and load. A control cabinet is attached for the transformer fan.
9. The oil conservator is ofa capsuleshape, which equipped with oil resistant, temperature resistant and air tight sealed capsules to isolate the oil from the outside air. The outside of the capsule is oil, and the inside is air. In order to further improve the reliability of the transformer, a silica gel moisture-absorber is used to exchange air in the air chamber of the capsule with the outside air .

Transformer Structure

Note: Due to continuous product improvement, the dimensions provided in this sample are for reference only. If necessary, our company can design and produce according to user requirements. Please contact the company in time.

 

Main technical parameters
Main circuit rated voltage(V)	..........................	Ac 400 (600)
Rated voltage of auxiliary circuit (V)	..........................	Ac 220/380 (400) dc 110/220
Rated frequency (Hz)	..........................	50(60)
Rated insulation voltage(V)	..........................	690(1000)
Rated current(A)	The level of bus	≤6000
Rated short-time bus withstand current (kA/1s)	..........................	50,80
Rated peak withstand current of bus (kA/0.1s)	..........................	105,176
Power frequency test voltage (V/1min)	main circuit	2500
	Auxiliary circuit	1760
bus	Three-phase four-wire system	A,B,C,PEN
	Three-phase five-wire system	A,B,C,PE,N
Protection grade	..........................	IP30

Our Workshop


Company Introduction 

Qingdao Hengfengyou Electrical Engineering Co., Ltd. (hereinafter referred to as Hengfengyou) is a large-scale enterprise group with electricity transmission and distribution as its main business,which integrates scientific research, development, manufacturing and trade. After 30 years rapid economy development in China, Hengfengyou now is a leading R & D, manufacturing and service base for MV
, HV and ultra-HV power distribution equipment in China. At present,we have 50 senior technicians and more than 300 employees, with a complete sales and service system. Our products sell well at home and abroad, and our annual output value adds up to $100 million. .
At present, Hengfengyou has 6 wholly-owned and holding subsidiaries, which are respectively engaged in R & D, manufacturing and service of transformers, switchgear, package/unit substation, pole-mounted high-voltage vacuum circuit breakers, new energy, and electrical engineering.
For a long time, the company has maintained close technical exchanges and cooperation with domestic and foreign universities, scientific research institutes and electric power enterprises.
Hengfengyou independently designed and developed SCB series dry-type transformer and SC series oil immersed transformer. Our product performs with high operation efficiency, and obvious energy conservation. The overall performance index reaches the world's advanced level.
The company also maintains long-term strategic partnership with Schneider, ABB, Simens, Chint and other electric suppliers. We absorbed foreign advanced experience in electrical equipment production and independently designed and developed a series of substation equipment, which realized the automation and intelligence of the substation, and of which the performance has been highly recognized by the user at home and abroad. In the following five years, the company plans to build an intelligent workshop with an annual output of 100000 transformers.Then,the intelligent robot will replace 80% of the existing labor force, which will greatly improve the production efficiency, lower production cost, and produce more energy-saving, environmentally friendly, more safe and reliable the product for the users!
HFY Certificate 

Our Services
1.Pre sale service A. make technical solution B. send quotation, technical data sheet and drawing prepare power transmission plan, testing plan and shipment plan
2. In sale service supervise the manufacturing schedule totally in accordance with the plan b.    send photos to customer during every manufacturing process(hold point) c.    inform the customer one week before testing. d. quick response within 12 hours any time.
3. After sale service a.All parts are under Two Years Warranty with defects from manufacturer. All spare parts and component can be offered for free from the original manufacturer or HFY. b. Training We will provide free training to your technician free of charge at our factory site in Qingdao, China. The total training period would be 2 working days. All travel and related expensed would be at the purchaser's expense. c. Technical Documents: Original operation and service manuals, the service manual is completed with wiring diagram, block diagram and trouble shooting information. d. Installation Usually, clients can do the installation and operation by themselves when following the detailed English user manual. If clients want our technician do this work, please read the following terms: The initial installation is not included with the professional HFY team member. All installation with the Hengfengyou team must be scheduled at least 4 weeks in advance before actual trip taken. All necessary connectivity must be ready prior the service being scheduled. While Hengfengyou team member arrives at the site for a complete and final installation, two days training course will be provide to the customer for operation and maintenance procedure. The initial installation is provided within 5 working days excluding travel days. The actual installation days may vary, based on different machine mode. Each day of working hour consist at 8 working hours. Any additional day will be charge according to our service fee listed below. When initial installation is being called for the Hengfengyou team required, the surcharge will be made in advance by the purchase at US$100/person/day plus all travel expenses. Travel expenses; local and destination transportation charges (air, train, ferry, bus, taxi or any means of transportation required to arrive to/from destination); accommodation (minimum of 3 star hotel facility) and 3 daily meals.
The Finished Project

Team Show

FAQ
Q1: Is OEM/ODM available?
A1: Yes, it is! Our products can be Customized. We have design and engineer teams,we can customize products according to customers' drawing or requirements.
Q2: What's your MOQ?
A2: One Set.
Q3: How is the delivery time?
A3: It depends your order quantity and it normally takes about 15-20 days.
Q4: How do you control the quality?
A4: We have QC team comply with TQM to ensure the quality. Each step is in compliance to the standards. At the same time, we will take photos and shoot video for you if you need.Every product will be fully assembled and carefully tested before packing and shipping.
Q5: How long is the warranty?
A5: Within one year from the sale date, if there are any accessory problems, you just provide the photos of damaged accessory, then we will provide free accessory. According to the number of products, we will provide easily damaged accessories for free. We also can provide technical support if you need.