Environmental Friendly Distribution Transformer Leading Manufacturer for Subway

• Application: Power, Electronic, Instrument
• Phase: Three
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: EI
• Brand: Cpepe, Tungwell
• Transport Package: Standard Export Package
• Trademark: CPEPE, TUNGWELL
• Origin: China
• Production Capacity: 5000unit/Year

Product Description

Introduction of Traction Transformer
CPEPE's liquid-filled substation transformers are designed, built, and tested in accordance with international standards including IEC 60076, GB1094, ANSI C.57, CSA, NEMA and IEEE. The insulating liquid can be mineral oil, high flash point ester fluid and silicon oil. The product is suitable for electrified railway traction power supply system.

Usually the transformer core is laminated type, and our wound type core is also possible if required by customer, Wound core traction transformer is a kind of energy-saving transformer with many outstanding advantages: Low no-load loss, low no-load current, low noise, strong anti-short circuit ability and overload capacity, the transformer is energy efficient and environmentally friendly.

Product Range

• Voltage level: 110 kV, 220kV
• Voltage regulation: ±2×2.5%, ±3×2.5%, ±4×2.5%
• Capacity: 8000kVA~75000 kVA

Technical characteristics

• Low no-load loss, low no-load current, low noise

         The Laminated core type transformer Adopt multistage step lapped joint fully-oblique structure, can reducing magnetic resistance and noise; Its cross section is inscribed polygon, high fill factor. After high temperature annealing of eliminating stress, no-load loss is greatly reduced.

• Strong overload capacity

         With oil flow guide control technology, the quantitative calculation of the oil flow, optimize the structure of oil circuit, reduce the hot-spot coefficient, to ensure that under the condition of rigorous overloading load, the winding hot-spot temperature does not exceed 140 ºC.

• Strong anti-short circuit ability

         By analyzing and calculating the worst short circuit, adopting high strength wire and effective support to strengthen the structure, adjusting the coil distribution to ensure all stress have enough margin. Self-developed winding technology can make the coils wind tightly.

• Low partial discharge

         Strictly control each part of the electric field intensity, according to the discharge requirements, coil winding and internal assembly is in the dustproof workshop to guarantee the body clean, adopts the high vacuum oil injection process, effectively control discharge of product.
 

Important Features

• The core is kind of a wound core. The whole core is composed by three identical single frames. Each single frame is wound by several ladder shaped material strips continuously and orderly.
• The lengths of three magnetic circuits are the same and the shortest. So no-load current of three core limb is small and three phases are balanced. Saving 15% of silicon steel than flat wound core.
• The core is wound tightly without seams. It has the advantages of lower no-load current, smaller magnetic resistance and lower loss. It also reduces the noise level.
• The core is wound tightly without seams. The cross section of wound core is similar to a circle. The core frame is wound by machine. Filling factor can reach 0.95~0.97
• Rectangular material strap will be cut along the line in the picture and then will be wound. No waste, material utilization by 100%
• Reduce 25% no-load loss and no-load current of more than 70%
• Reduce noise level 7~10dB
• Balanced magnetic circuit of three phases
• Good stability, the better anti-short circuit ability
• Good anti-short circuit ability
• Low partial discharge
• Good overload capacity

Technical Specification
220kV traction transformer

Rated Capacity (KVA)	Voltage Combination (kV)		Connection Symbol	No-load Loss (kW)	Load Loss (kW)	No-load Current (%)	Short-circuit Impedance (%)
	HV (kV)	LV (kV)
12500	220±2×2.5%	27.5	Ii0	12	73	0.6	10.5~12.5
16000				15	75	0.5
20000				17	77	0.5
25000				20	91	0.5
31500				23	109	0.4
40000				27	130	0.4
50000				32	154	0.4
63000				38	183	0.3

110kV traction transformer

Rated Capacity (KVA)	Voltage Combination(kV)		Connection Symbol	No-load Loss (kW)	Load Loss (kW)	No-Load Current (%)	Impedance Voltage (%)
	HV (kV)	LV (kV)
6300	110±2*2.5% 110±3*2.5% 110±4*2.5%	2*27.5	Ii0i0 Ii0i6	7.8	32	0.63%	8.4% 10.5%
8000				9.3	38	0.63%
10000				10.6	45	0.56%
12500				12.5	55	0.53%
16000				14.6	65	0.47%
20000				16.9	75	0.45%
25000				20.1	88	0.42%
31500				23.6	104	0.38%
40000						28.3 125 0.35%
50000						34.0 148 0.34%
63000						41.0 173 0.28%
75000						47.0 190 0.27%

Changzhou Pacific Electric Power Equipment (Group) Co., Ltd is a high-tech enterprise in research, design, manufacture, market and service in High Voltage and Low Voltage power transmission and distribution industry.

Established in 1989 and organized as a comprehensive power solution group company in 1997. The company has a registered capital over USD 20 million and fixed assets over USD 100 million. The company is located in the center manufacturing zone of China, near to Shanghai city, occupies a total area of 240,000 square meters. The annual production capacity is over 20,000 sets of high and low voltage switchgears and 3,000MVA different kinds of transformers. The products are widely used in the area of high-speed railways, subway, city tram, petrochemical, metallurgy, power substation, power plants, high-rise buildings etc. 

With the strong manufacturing backgrounds over the decades, Changzhou Pacific Electric Power Engineering Co., Ltd (hereinafter CPEPE/TUNGWELL) was founded for group oversea' market, as well as supply chain management services. Now, CPEPE/TUNGWELL is a leading distributor of China famous power components, equipment and materials. We serve the construction industries, the commercial, and government market, and utility markets. CPEPE/TUNGWELL products and services support constructions, infrastructures, building renovation, facility maintenance, repair and operations, and original equipment manufacturing. 

Today, CPEPE/TUNGWELL stands as a large supplier of power equipment and engineering, target for one stop solutions for power industries.


Workshops & Production Lines



Subway Industry
Typical Projects: Shenzhen Metro, Changsha Metro, Nanning Metro, Changsha Metro, Foshan Metro, Shijiazhuang Metro, Hefei Metro, Xi'an Metro, Chengdu Metro, Nanjing Metro, Chongqing Metro, Tianjin Metro, Changzhou Metro, Xuzhou Metro, Suzhou Metro, etc.

Petrochemical Industry
Typical Projects: Jiangsu Hengli Chemical Fiber, Jiangsu Jurong Petrochemical, Hengli Petrochemical, Juxian Synthetic Materials, Juhua Group, Qinghai Salt Lake Haina Chemical Industry, Tianjin Bohai Chemical Industry, Tianjin Bohua Chemical Industry, etc.

Power Grid
Thermal power plant
Typical Projects: Harbin Thermal Power, Tianjin Junliangcheng Power Generation, Jiangxi Jingdezhen Power Generation, Guizhou Panxian Power Plant, Tianjin Wuqing Thermal Power, Jiangsu Qinli Thermal Power, Tianjin Dagang Power Plant, etc.
Other power plants (wind power, hydropower, photovoltaics)
Typical Projects: Weng'an 110kV Yinzhan Substation, Naqu High Altitude Test Wind Power Plant in Tibet, Qinxi 220kV Substation, Ningxia Datang International 100MW Wind Farm, China Resources Guangxi Cangwu Liubao Phase I 50MW Wind Power, Qianzhi Changji Mulei Laojunmiao Wind Farm 150MW, Nanchuan Phase II Wind Power, Dongdongtan 50MW Photovoltaic Power Generation, etc.

Metallurgy Industry
Typical Projects: China National Nonferrous Metals Construction Group, Beijing Iron and Steel Group, Baosteel, Nanjing Iron and Steel, Shanghai Meishan Iron and Steel, Jinan Iron and Steel, Northeast Special Steel, Northeast Special Steel , Zhongtian Iron and Steel, Jiuquan Iron and Steel , etc.

Cement Industry
Typical Projects: Anhui Conch, Binhai Renzhou Cement, TCC, Guangan Changxing Cement

Oversea Projects
Projects in oversea markets: Indonesia, Sudan, Zambia, Ethiopia, Myanmar, Russia, Kuwait, Malaysia, Iraq, Cambodia, Mozambique, Vietnam, Japan, Pakistan, Laos, Philippines, Montenegro, South Africa, Cuba, Yemen, Ghana, Senegal, Congo, Mexico, etc.