Features
New magnetic material is taken to be the core of the current transformer, which has high magnetic permeability, low saturation magnetization and good stability. Therefore, the measuring accuracy is higher and the instrument security factor is lower. Since the high quality silicon processed by advanced technology is taken to be the core of the protection windings, which assured the accuracy limit factor is higher.
The semicircular ring core and secondary windings are vacuum poured by high quality epoxide resin in the fire retardant plastic casing, which has the characteristic of moisture proof, stable performance and dispensing with maintenance.Small size, light weight, small footprint, fixed in the ring network switchgear cable.The cable can cross the current transformer through its internal poles quickly and uniformly.
The Cast Resin Straight-Through Current Transformer can be divided several kinds according to the various current ratio, accuracy and rated loads. The specific parameters are showed in the corresponding to each model parameter tables.
Theory
Split core current transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of current transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit. Installation With electricity, suite for power monitor, energy loss etc.
Split core current transformers may also be used as an isolation instrument transformer so that secondary
quantities may be used in phase shifting without affecting other primary connected devices.
Applications
Spit core current transformers are the current-sensing units of the power system. Split core current transformers are used at generating stations, electrical substations, and in industrial and commercial electric power distribution.
LZCK322-10 split core current transformer is suitable forcurrent 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-Safe Ring/Safe Plus...and cable distribution boxes.The transformer can be directly installed at the inlet andoutlet cables.The slice is imported silicon material. Thesemicircular ring core and secondary windings arevacuum poured by insulated resin.
PARAMETERS
| Technical parameters |
| Standards |
IEC60044-1; IEC 61869-2; NTC 2205; GB1208-2006; ANSI C57.13 |
| Accuracy Class |
0.5S, 0.5%, 1%, 3% |
| Range of primary rated current |
100-1500A |
| Range of Rated load |
≤10VA |
| Rated frequency |
50/60Hz |
| Rated secondary current |
5A or 1A |
| Rated short-time thermal current |
40kA, 1S |
| Rated continuous thermal current |
150%I1n |
| Secondary winding power frequency withstand voltage |
3kV, 1min |
| Safety Factor Rating |
(FS) <10 |
| Output signal |
1A, 5A, 333mV, 1V or 5V(customized) |
| Cable length |
2.5m, 5m, 10m(customized) |
| Flame retardant ABS plastic shell inside, jaw waterproof apron. |
| Mechanical parameters |
| Aperture (mm) |
Φ55 |
| Dimensions (W×D×H) (mm) |
180×138×52 |
| Weight (kg) |
2 |
| Working conditions |
| Operating temperature |
-35°C to +65°C, not exceeding +40°C |
| Storage temperature |
-40°C to +70°C |
| Ingress Protection |
IP65 |
| Environment |
outdoors or indoors |
| The Height of above sea level |
0- 3000m |
| Conditions |
No existence of severely begrimed, erosive and radioactive gas in the air. Continuous working under the rated current is allowed. |
SELECTION GUIDE
| Technical parameters |
| Standards |
IEC60044-1; IEC 61869-2; ANSI C57.13; NTC 2205; GB1208-2006 |
| Rated primary current |
30-600A |
| Rated load |
≤10VA |
| 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) |
φ50xφ110x52 |
| Weight (kg) |
1.6 |
| 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 |
LZCK322-10 |
LZCK322-10 |
| Purpose |
Measuring current transformer |
Protection current transformer |
| Ratio |
Accuracy class and rated load(VA) |
Accuracy class and rated load(VA) |
| I1/I2 |
0.5 |
1 |
3 |
10P15 |
10P10 |
10P5 |
| 30/1 |
|
1 |
1.5 |
|
|
|
| 50/1 |
|
1 |
2 |
|
|
1.25 |
| 75/1 |
|
1.5 |
2.5 |
|
1 |
2 |
| 100/1 |
2 |
2.5 |
3 |
|
1.5 |
2.5 |
| 200/1 |
2.5 |
|
|
1.25 |
2.5 |
|
| 300/1 |
3.75 |
|
|
1.25 |
2.5 |
|
| 400/1 |
7.5 |
|
|
1.25 |
2.5 |
|
| 500/1 |
10 |
|
|
1.25 |
3 |
|
| 600/1 |
10 |
|
|
1.5 |
3 |
|
| 50/5 |
|
|
2.5 |
|
|
|
| 75/5 |
|
|
2.5 |
|
|
|
| 100/5 |
2.5 |
|
|
|
|
|
| 200/5 |
3.75 |
|
|
|
|
|
| 300/5 |
5 |
|
|
|
|
|
| 400/5 |
7.5 |
|
|
|
2.5 |
|
| 500/5 |
7.5 |
|
|
|
2.5 |
|
| 600/5 |
10 |
|
|
|
3.75 |
|
SELECTION GUIDE
| Model |
Primary rated current |
Rated load |
Aperture (mm) |
Description (mm) |
Weight (kg) |
Material |
Water-proof |
| LZCK-55 |
100-1500A |
≤10VA |
φ55 |
180×138×52 |
2 |
PC |
IP65 |
| LMCK185-10 |
300-3000A |
≤25VA |
φ185 |
350×283×55 |
4.5 |
PC |
IP65 |
| LZCK310-10 |
300-600A |
≤10VA |
φ50 |
φ50 x φ110 x 32 |
1 |
Resin |
silicon case (option) |
| LZCK322-10 |
30-600A |
≤10VA |
φ50 |
φ50 x φ110 x 52 |
1.6 |
Resin |
silicon case (option) |
| LZCK350-10 |
20-600A |
≤25VA |
φ50 |
φ50 x φ110 x 105 |
3.1 |
Resin |
silicon case (option) |
| LZCG530-10 |
30-600A |
≤20VA |
φ45 |
φ45 x φ120 x 65 |
2.1 |
Resin |
silicon case (option) |
ORDERING INFORMATION
Be sure to the type, current ratio, accuracy class, rated load and use of the products when you plan to make a order. Special specifications could be customized.All kinds of different specifications and parameters current transformers can be made according to your needs.
