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LCT Current Transformer
2. Short circuit protection
3. Controlling
4. Used in residential building, non-residential building, energy source industry and infrastructure.
5. According to the type of instantaneous release classified as follows : type B(3-5)ln, type C(5-10)ln, type D(10-20)ln
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Product Details
● This zero-sequence current transformer has such characteristics as high precision,good linearity, reliable operation, easy
installation,especially this transformer can be applied to system of zero-sequence current 1A and 2A while conventional zero-
sequence transformer can not. The exterior design is two central-circle combined type, novel structure, beautiful and reasonable.
● The products can be used for power supply system in the fields of electric power, metallurgy, coal, petroleum, chemical industry, building material and other industries.
● Standard:IEC 61869-1.
LCT-2,3,4,7 Zero-sequence Current Transformer
This zero-sequence current transformer has such characteristics as high precision,good linearity, reliable operation, easy
installation,especially this transformer can be applied to system of zero-sequence current 1A and 2A while conventional zero-
sequence transformer can not. The exterior design is two central-circle combined type, novel structure, beautiful and reasonable.
The products can be used for power supply system in the fields of electric power, metallurgy, coal, petroleum, chemical industry, building material and other industries.
Standard:IEC 61869-1
Technical data
1. Operating environment
a. Environmental temperature: -20℃~50℃;
b. Relative humidity: ≤90%
c. Atmospheric pressure: 80kpa~200kpa;
2. AC voltage: 66kV~4000kV;
3. Zero-sequence current:Primary side~36A (customize for 36A or above, secondary side 20~30mA)
4. Electric network frequence: 50Hz;
5. The terminal used with ML98 device-using explanation;
| System primary zero-sequence current(A) | Selected terminal |
| 1≤10＜6 | S1, S2 |
| 6≤10＜12 | S1, S3 |
| 12≤10＜36 | S1, S4 |
6. Secondary load: ≤2.5Ω
Overall and mounting dimensions(mm)
| Type | Bore ΦD | Width L | Height H | Center height h | Thickness B | Mounting size and bolt spec.(M8 ×25) |
| LCT-7 | Φ185 | 338 | 305 | 165 | 60 | 105±0.5 |
| LCT-5 | Φ150 | 300 | 280 | 150 | 55 | 105±0.5 |
| LCT-4 | Φ120 | 300 | 280 | 150 | 55 | 105±0.5 |
| LCT-3 | Φ100 | 260 | 230 | 123 | 55 | 105±0.5 |
| LCT-2 | Φ80 | 210 | 200 | 106 | 55 | 110±0.5 |
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