High Voltage Current Transformer

LJ2,4,7current transformer

Item No.: LJ2,4,7
The series of zer-sequence current transformer for rated frequency 50Hz generator or condenser over the same period in the neutral point non-effectively grouded system groud fault protection.
Description
Description
Introduce

This series transformer with the relay DD11/60 type,when the scope of protectionwithin a groundfault.Residual current in the transformer secondary circuit.When the current reaches a certain value,the relay action.

Features
Series transformer with high permeability toroidal core.
And annealing process,the secondary winding around the two sections in the core clamping core folder support transformer termial block and groud bolt and mounting hole in the folder on the folder on the user's three-phase cable through the core window.
Transformer primary winding.

Specification

 

Type Allowed to cross the cable number(root) Secondary total impedance Connect the relay model Relay setting current Protection sensitivity Frequency test voltage
LJ-2 1-2 <10 DD11/60 0.03 1-3 2
LJ-4 3-7 <10 DD11/60 0.03 1-3
LJ-7 5-7 <10 DD11/60 0.03 1-3
LJ1 1 <10 DD11/60 0.03 1-3

Dimensions

 

 LJ2,4,7
Type  D d d1 A1 A2 B1 B2
LJ-1 145 82 9 80 60 130 80
LJ-2 230 110 13 150 155 200 195
LJ-3 285 140 220 280
LJ-4 310 185 300

Accuracy test

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Professional designer and manufacturer of current transformer,
cooperated with Siemens ,schneider Fuji electrical softbank LG samdsung.
Tel:13968747975
Add:(Zhejiang Lierde Relay Co., Ltd.) Xinguang Ind. Zone, Liushi Town, Wenzhou, Zhejiang, China
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