Quick Details
Description
Skype: liujingmec
liujing@mec.com.cn
It is outdoor, single phase and oil-immersed hair-pin type current transformer, which is used for metering and relay protection of 66kv, 110/132kv, 220kv 50/60Hz.
It is oil/paper insulation system, the primary insulation is wound from high voltage cable paper, and is placed several capacitor screen of voltage division in the primary insulation, which can improve electric field distributing and decrease the consumption of the insulation material. It will be immersed with transformer oil after desiccating vacuum. It has advantages of stable and reliable performance of insulation, rich successful experience, a long life time and convenient maintenance.
Perfect fluidity performance of transformer oil is good for heat dissipation. It also has self recover ability for the failure of partial discharge caused by air bubble and dust.
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Item
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Unit
|
LB5-66
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LB6-110
|
LB7-220
|
|
Rated voltage
|
kV
|
66
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110/132
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220
|
|
Highest voltage
|
kV
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72.5
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126/145
|
252
|
|
Rated frequency
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Hz
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50/60
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50/60
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50/60
|
|
Rated transformation ritio
|
|
2×25～2×1000/5 or 1A
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2×30～2×1000/5 or 1A
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2×300～2×1000/5 or 1A
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|
Number of secondary windings
|
|
1～5
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1～6
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1～8
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|
Accuracy of measuring winding
|
|
0.2 0.2S 0.5 0.5S
|
0.2 0.2S 0.5 0.5S
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0.2 0.2S 0.5 0.5S
|
|
Accuracy of protection winding
|
|
5P or 10P
|
5P or 10P
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5P or 10P
|
|
Rated secondary output
|
VA
|
20～50
|
20～50
|
20～50
|
|
Creepage distance
|
mm
|
W1/1500
W2/1820
W3/2250
|
W1/2760
W2/3150
W3/3906
|
W1/5040
W2/6300
W3/7812
|
|
Power frequency withstand voltage
|
rms
|
140
|
185(230)(275)
|
395(460)
|
|
Lightning impulse withstand voltage
|
rms
|
325
|
450(550)(650)
|
950(1050)
|
It is outdoor, single phase and oil-immersed hair-pin type current transformer, which is used for metering and relay protection of 66kv, 110/132kv, 220kv 50/60Hz. Please contact us! Email: liujing@mec.com.cn
Liaoning MEC Group Co., Ltd. is located in China’s famous coastal Dalian city. The company is a comprehensive group, the business scope includes international project contracting, international trade and domestic trade, environmental engineering, e-commerce, real estate and property management, warehousing and logistics , and investment.
The group company was founded in 1994. Up to now, the average annual turnover is around 2.2 billion yuans, of which, the volume of import and export amounts for more than USD 250 millions. The company keeps business relations with several thousand firms and enterprises home and abroad.
All along with the development during the past twenty years, we never forget our responsibilities to the society. The company is persistent in providing supports to the public welfares, its year in year out public donation activities have won broadly recognitions from the social communities as well as governmental authorities.
We adhere, with the company’s good HR resources and scientific management models, the ideas of advance decision making, moderate operation, prudent management, sustainable development, and abide by the core values of being realistic, to create and to share. We do our best to provide our customers with added service.
