Product Description
LZCK series split core current transformer is suitable for current measurement and microcomputer protection of electrical equipment in 10KV and 35KV AC power system. It is widely used in compact fully insulated ring network switchgears such as ABB-SafeRing/SafePlus...and cable distribution boxes.
The transformer can be directly installed at the inlet and outlet cables.The slice is imported silicon material. The semicircular ring core and secondary windings are vacuum poured by insulated resin.
Parameters
| Technical parameters |
|
| Standards |
IEC60044-1; IEC 61869-2; ANSI C57.13; NTC 2205; GB1208-2006 |
| Rated primary current |
20-600A |
| Rated load |
≤25VA |
| Rated frequency |
50Hz or 60Hz |
| Rated secondary current |
5A or 1A |
| Rated short-time thermal current |
40kA, 1S |
| Rated continuous thermal current |
120%I1n |
| Secondary winding power-frequency voltage |
3kV, 1min |
| Instrument security factor |
FS≤10 |
| Mechanical parameters |
| Dimensions (W×D×H) (mm) |
φ50xφ110x105 |
| Weight (kg) |
3.1 |
| Operating conditions |
| Operating temperature |
-35°C to +55°C |
| Daily average temp |
<+40°C |
| Altitude |
<3500 meters |
| Condition |
No existence of severely begrimed, erosive and radioactive gas in the air. Permission of long-term operation under rated current. |
TECHNICAL DATA
| Type |
LZCK350-10 |
LZCK350-10 |
LZCK350-10 |
| Purpose |
Measuring current transformer |
Protection current transformer |
Double winding current transformer |
| Ratio |
Accuracy class and rated burden(VA) |
Accuracy class and rated load (VA) |
Composite accuracy class and rated load (VA) |
| I1/I2 |
0.5 |
1 |
3 |
10P15 |
10P10 |
10P5 |
0.5 |
1 |
10P10 |
10P5 |
| 20/1 |
|
|
0.5 |
|
|
0.75 |
|
|
|
|
| 30/1 |
|
0.5 |
1.5 |
|
0.75 |
1.25 |
|
|
|
|
| 50/1 |
|
1 |
2 |
|
1.25 |
2 |
|
|
|
|
| 75/1 |
2 |
2.5 |
3.75 |
1.25 |
2 |
3 |
|
2 |
1 |
2 |
| 100/1 |
2.5 |
3.75 |
5 |
2 |
2.5 |
5 |
2 |
2.5 |
1.5 |
2.5 |
| 200/1 |
5 |
|
|
3 |
5 |
7.5 |
2.5 |
|
2 |
|
| 300/1 |
10 |
|
|
3 |
5 |
7.5 |
3.75 |
|
2.5 |
|
| 400/1 |
10 |
|
|
3 |
5 |
10 |
5 |
|
2.5 |
|
| 500/1 |
25 |
|
|
3.75 |
6.25 |
10 |
5 |
|
2.5 |
|
| 600/1 |
25 |
|
|
5 |
7.5 |
10 |
7.5 |
|
5 |
|
| 50/5 |
|
|
2.5 |
|
|
2 |
|
|
|
|
| 75/5 |
|
|
2.5 |
|
|
3 |
|
|
|
|
| 100/5 |
2.5 |
|
3.75 |
|
|
5 |
|
2.5 |
|
2.5 |
| 200/5 |
7.5 |
|
|
|
|
|
2.5 |
5 |
|
2.5 |
| 300/5 |
10 |
|
|
|
|
|
5 |
|
2 |
2.5 |
| 400/5 |
15 |
|
|
|
|
|
7.5 |
|
2.5 |
5 |
| 500/5 |
25 |
|
|
|
|
|
7.5 |
|
2.5 |
5 |
| 600/5 |
30 |
|
|
|
|
|
10 |
|
3 |
7.5 |
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