Email: liujing@mec.com.cn
Skype:liujingmec
MSN:lijing_0612@126.com
It is top-head oil/paper insulation type product, 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.
Primary winding is of penetrating type conducting rod structure, hence improves the product’s endurance against the short circuit current, maximum short-time withstand current reaches 63KA/3s(In case of series connection of primary winding)
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Item
|
Unit
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LVB1-66
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LVB1-110
|
|
Rated voltage
|
kV
|
66
|
110
|
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Highest voltage
|
kV
|
72.5
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126
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Rated frequency
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Hz
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50/60
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50/60
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Rated transformation ritio
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|
2×200～2×2000/5 or 1A
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2×200～2×3000/5 or 1A
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Number of secondary windings
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|
1～5
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1～6
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Accuracy of measuring winding
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|
0.2 0.2S 0.5 0.5S
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0.2 0.2S 0.5 0.5S
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Accuracy of protection winding
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|
5P or 10P
|
5P or 10P
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Rated secondary output
|
VA
|
10～50
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20～50
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Creepage distance
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mm
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W1/1500
W2/1820
W3/2250
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W1/2760
W2/3150
W3/3906
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|
Power frequency withstand voltage
|
rms
|
140
|
185(230)
|
|
Lightning impulse withstand voltage
|
rms
|
325
|
450(550)
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