LB1 current transformer

It is outdoor, single phase and oil-immersed top-head type current transformer, which is used for metering and relay protection of 66kv, 110kv, 50/60Hz. Please contact us! Email:

liujing@mec.com.cn

Product Details Company Profile

Description

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)

Item	Unit	LVB1-66	LVB1-110
Rated voltage	kV	66	110
Highest voltage	kV	72.5	126
Rated frequency	Hz	50/60	50/60
Rated transformation ritio		2×200～2×2000/5 or 1A	2×200～2×3000/5 or 1A
Number of secondary windings		1～5	1～6
Accuracy of measuring winding		0.2 0.2S 0.5 0.5S	0.2 0.2S 0.5 0.5S
Accuracy of protection winding		5P or 10P	5P or 10P
Rated secondary output	VA	10～50	20～50
Creepage distance	mm	W1/1500 W2/1820 W3/2250	W1/2760 W2/3150 W3/3906
Power frequency withstand voltage	rms	140	185(230)
Lightning impulse withstand voltage	rms	325	450(550)