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LXK Indoor Zero Sequence Instrument Current Transformers For Power Distribution Cabinet

 
Zero sequence current transformer is a special type of current transformer mainly used for detecting zero sequence current in power systems. Zero sequence current refers to the current in which the sum of three-phase currents is not equal to zero when a three-phase unbalanced load or a single-phase ground fault occurs. Zero sequence current transformers have important application value in power systems, as they can effectively detect and protect the safe operation of power systems.
 
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  • LXK

  • DGG

1. Zero-sequence current transformers they are specifically designed to measure the residual current in a power system, which is crucial for detecting ground faults and ensuring the safety of electrical equipment.  .


2. these LXJ Type Zero-sequence transformers have a high accuracy level, making them reliable for precise current measurements..


3. LXJ series zero-sequence current transformers are compact in size, making them easy to install and suitable for various applications  


4. zero-sequence current transformers have a wide frequency range, allowing them to effectively measure currents in both low and high frequency systems.


5. These zero-sequence current transformers are highly sensitive to small currents, making them ideal for detecting even the slightest abnormalities in the electrical system. Overall, zero-sequence current transformers are essential components in power systems for accurately measuring residual currents and ensuring the overall safety and efficiency of the electrical network.


1. Rated secondary current: 5A or 1A

2. Power factor: cosφ=0.8(lag)

3. Rated frequency: 50Hz or 60Hz

4. Rated primary current, rated output, and accurate level see table 1

5. Insulating property: primary winding to secondary winding and ground, and secondary winding to the ground can bear the power frequency withstand voltage 3kV for 1min.

Rated primary current(A)

Accuracy Class

Rated Output (VA)

60-75

10P5

2.5

100

3.75

150

2.5

200-300

3.75

400-600

5

100

2.5

150-200

10P10

2.5

300-400

3.75

500

5

600

5

Type of Relay

Connecting Method of Relay Windings

Relay Calibration

Primary Zero Sequence Current

LJK-Φ120
LJK-Φ160

Series

15x1

2-5

30x1

Parallel

15x2

3-8

30x2

LJK-Φ200

Series

15x1

3-6

30x1

Parallel

15x2

3-10

30x2


1. Altitude: Should not exceed 1000m

2. Ambient temperature: -5ºC ~ +40ºC

3. Air relative humidity: ≤85%

4. Air relative site: Indoor.


Model Number

ΦD

Φd

H

h

a

b

c

e

LXK(KXLXK) - Φ80

165

80

175

82.5

120

104

120

56

LXK(KXLXK) - Φ100

180

100

195

92.5

LXK(KXLXK) - Φ120

204

120

215

102.5

LXK(KXLXK) - Φ150

234

150

245

117.5

LXK(KXLXK) - Φ180

263

180

275

132.5

LXK(KXLXK) - Φ200

303

200

320

156

LXK(KXLXK) - Φ240

347

240

385

185

160

120

142

80


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