0.5kV Low Voltage Current Transformer Indoor, LV Single Phase Residual Current Transformer
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0.5KV Low Voltage Single Phase Residual Current Transformer For Indoor Switchgear

This LXK series current transformer is indoor type, applied to rated voltage 0.5kV, rated frequency 50-60Hz in the power system, used for the zero sequence overcurrent protection of power system, high voltage three-phase AC generator and motor. The outside diameter of transmission cable is not more than 120MM. This current transformer is divided into two halves, and the resin is poured into a semicircle, then connected with clamps. When installed, the indoor type current transformer can be divided into two halves, then combined into a whole. The installation is very convenient.

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Usage Conditions of current transformer

1. Altiude is no more than 1000m.
2. The maximum change of surrouding temperature is no more than -30°C~+40°C.
3. Universal product is only used in the area with less than 85% relative humidity.
4. Installation field had no serious effect transformer insulated, steam, chemical deposition, dust foul and other explosive and corrosive medium, and the field without serious shake and bump.

Technical Parameters of LXK series current transformer

Model Meaning of LXK series current transformer

CT Model Meaning

Specification Parameters

LXK-∅(80, 120, 140, 160, 180, 200, 240, 300)type technical data 1: for residualprotection

Transformation ratio

(A)

Relay type Connection type of relay coll Relay scale value Primary residual current of relay acting (A) Weight
(kg)
60/1 DD-11/60 Series connection 15×1 2.4-4.5 4.5
30×1
Parallel connection 15×2 3-5
30×2
DD-1/60 Series connection 15×1 3-5
30×1
Parallel connection 15×2 3-6
30×2

(Table 1)

LXK-∅(80, 120, 140, 160, 180, 200, 240, 300)type technical data 2: mating with microcomputer protection

Transformation ratio (A) Accuracy class Ratde output (VA)
60/1 5P10 1.0
75/1 1.5
100/1 2.5
150/1 2.5
200/1 3.75
300/1 7.5
150/1 2.0
200/1 2.5
300/1 5
400/1 10
500/1 12.5
600/1 15

(Table 2)

Dimensions of current transformer

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