High Voltage Current Transformer

LB7-220(W1) current transformer

Item No.: LB7-220(W1)
The current transformer 220kV .50Hz power systems for current and energy measurment for lighting protection.
Description
Description
Introduce

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.

Technical Parameter

 

Rated current ratio Class combination Accuracy class Rated output Accuracy limit factor
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/P1/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
5P,10P 50 25  
50 12.5
0.5 50 40  
0.2 50 40 (0.5class)  
0.2S 50 40 (0.5class)  

 

Rated current ratio Rated short time thermal current Rated dynamic current Rated insulation level Porcelanin creepage distance oil weight Total weight
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)
(5s) 21-42 or (3s) 31.5-63 55-110 or 80-160 252/395/950 410 365/1300
550
630

Dimensions

 

Number Name Outline Dimensions
1 Valve
2 Earth stud
4 Junction box
5 Oil tank
6 Procelain bushing
7 Oil conserivator
8 Primary outlet terminal
9 Connecting sheet
10 Oil level observation window
11 Expander
12 Overvoltage protection

Accuracy test

24Hs online service
365Ds NON-Stop Production 20Ys Professional Manufacturers
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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