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HEYI Electrical CO.,LTD

Contact person: Bethy

Position: Sales Manager

Tel: 86-577-62659558

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 LB7-220(W1) current transformer

Description and meaning of model

The current transformer 220kV .50Hz power systems for current and energy measurment for lighting protection.

The product is equipped with a metal exander,fully sealed structure ,the primary winding as a "U" shaped capacitor-type insulating structure,dielectric loss rate is small low partial discharge .The secondary  winding is generally 4-6windings can be any combination of levels ,according to the accurate level of user  need to producte the measured level of 0.2S class of special purpose current transformer.

The current transformer for outdoor installations LB7-220 applies to an altitude of 1700 m the following areas ,LB7-220W1 apply to the dirty areas below an altitudeof 1700 m .Environment al temperature -30°C-40°C.Outline and installation size are shown in Fig

Technical Data

Rated current ratio Class combination Accuracy class Rated output Accuracy limit factor Rated short time thermal current Rated dynamic current Rated insulation level Porcelanin creepage distance oil weight Total weight
Full turn number Tap
2*600/5 ,(2*300/5),2*750/5 , (2*400/5) ,2*800/5 ,(2*400/5),2*1000/5 ,(2*500/5),2*1200/5 ,(2*600/5),2*1250/5 ,(2*750/5) P1/P2/0.5(0.2) , P1/P2/P 1/P1/0.5(0.2),P1/P2/P1/P1/P1/0.5(0.2) ,  P1/P2/P1/0.5/0.2 , P1/P2/P1/0.5/0.2S ,P1/P2/P1/P1/P1/0.2S 5P,10P 50 20 (5s) 21-42 or (3s) 31.5-63 55-110 or 80-160 252/395/950 410 365/1300
5P,10P 50 25
50 12.5
0.5 50 40 550
0.2 50 40 (0.5class)
0.2S 50 40 (0.5class) 630

Outline dimension

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