Products Type
Contact Us

HEYI Electrical CO.,LTD

Contact person: Bethy

Position: Sales Manager

Tel: 86-577-62659558

Fax: 86-577-61712987

Mobile: 86-13968747975

E-mail: heyi@heyiele.com

bethy@heyiele.com

Skype: bethycai

ADD: #21 ShangYou North 

Road, HuangHua LiuShi YueQing,

Zhe Jiang, CHINA

http://www.heyiele.com

Product

Home » Product
 LJZ-65(75) current transformer

Description and meaning of model

LJZ-65(75) zero-sequence current transformer at 35kV and below,AC50Hz line.Zero sequence as the high-voltage electric power system three-phase alternator,motor over-current protection.The current transformer is only  suitable for indoor.And three-phase three-core cable outside diameter not greater than65~75mm

Characteristic of structure

LJZ-65(75)pouring of the zero-sequence current transformer is fully enclosed.small size,adaptability to climate,the use of external capacitor compensation,protection of high sensitivity.

This zero-sequence current transformer core high-quailty cold-rolled silicon steel rolling ring,the two secondary coils of the transformer winding along the core ,which coil K1,K3, there is a tap K2,coil a,Xdoes not tap conductive material is enameled.65(75)window for the three-phase cable penetration,the zero sequence current transformer with a floor of non-magnetic material ,is equipment with a metal nameplate.

Technical Data

1.Electrical insulation strength :this zero-sequence current transformer bus ,it is only necessary to examine the insulating properties of the secondary coil;

2.The two secondary coils,the sulation resistance between the two secondary coils of not less than 10 megohms.

3.The two secondary coils,between the two secondary coils should be able to withstand power frequency test voltage of 3kV (rms)for 1minute

4.protection sensitivity :the sensitivity of this zero-sequence current transformer shall meet the fllowing requirement

Connection to the coil termial symbols of the zero sequence current transformer and DD-11/60 DD-11/60 earthing relay A zero sequence current
coil connection scale value
K1,K2(a,x connect with capacitor) In series 15*1 1-3
30*1
Parrallel connection 15*2 2-4
30*2
K1,K2(a,x not connect with capacitor) In series 15*1 3-6
30*1
Parrallel connection 15*2 2-4
30*2

Outline dimension

Inquiry Form
Products Images:
Produt: LJZ-65(75) current transformer
Full Name: *
Address:
Phone:
Email Address: *
Message: *
Upload Photos:
Contact Online bethycai 285611779 86-13968747975 bethy@heyiele.com