LZCK310-10 400/5a Cheap Split Core Cast Resin Current transformer

Cheap Split core cast resin current transformer

The Model LZCK310-10 is a window type resin casting split core current transformer. Some clients also called it as TTCC. This model can be used both for measurement and microcomputer protection of electrical equipment in 11KV and 35KV AC power system such as such as ABB-Safe Ring/Safe Plus...and cable distribution boxes.
We used imported silicon material and using our mature advanced producing technology we make sure our transformer has very goog linear and more than 20 years using life in order to be qualified with all the jobs. These semicircular ring core and secondary windings are vacuum poured by insulated resin. Ratio from 300/5A to 1000/5A can be customized for user system. All of our current transformers are strictly comply IEC60044-1, IEC 61869-2, NTC 2205, GB1208-2006, ANSI/IEEE C57.13.


Outline drawing

Split core cast resin current transformer

Wiring diagrams

Split core cast resin current transformer

P1, P2 is primary polarity terminal, S1, S2 is secondary polarity terminal.
P2, S2 is homonymous terminals (subtractive polarity).


  • Size:φ50xφ110x32;
  • Economic type deign;
  • Easily installation;
  • High precision 0.5%;
  • Measurement range 0-1000A AC;
  • Holding wire diameter: φ50mm;
  • Using life more than 20 years;
  • High quality silicon steel material;
  • Secondary windings are vacuum poured by insulated resin;
  • 300/5A, 400/5A, 500/5A, 600/5A, 750/5A, 800/5A, 1000/5A;
  • 300/1A, 400/1A, 500/1A, 600/1A, 750/1A, 800/1A, 1000/1A;
  • IEC60044-1, IEC 61869-2, , NTC 2205, GB1208-2006, ANSI/IEEE C57.13;


  • Power Meter;
  • Energy meter;
  • Load analysis;
  • MV switchgears;
  • Distribution boxes;
  • Power Quality Analyzer;
  • Low voltage metering system;
  • Distribution Power transformer monitor system;


Technical parameters 
Standards IEC60044-1; IEC 61869-2; NTC 2205; ANSI C57.13; GB1208-2006;
Class 0.5, 1, 3
Rated primary current 300-1000A
Rated secondary current 5A or 1A
Rated load ≤10VA
Rated frequency 50Hz or 60Hz
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
Insulation Class A
Material Polyurethane +Silicon steel sheets+Enameled wire+ABS
Mechanical parameters 
Dimensions (W×D×H) (mm) φ50xφ110x32
Jaw cable diameter(mm) 45
Weight (kg) 1
Operating conditions 
Operating temperature -40°C to +70°C
Daily average temp <+40°C
Storage temperature -40°C to +70°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.

Selection guide

Type LZCK310-10
Purpose Measuring current transformer
Ratio Accuracy class and rated load(VA)
I1/I1 0.5 1 3
300/1 2.5 2.5 5
400/1 2.5 2.5 7.5
500/1 5 5 7.5
600/1 5 7.5 10
750/1 10 10 10
800/1 10 10 15
1000/1 10 10 15
300/5 2.5 5 7.5
400/5 5 5 7.5
500/5 5 7.5 10
600/5 5 7.5 10
750/5 10 10 15
800/5 10 10 15
1000/5 10 10 15

Selection Guide

 Model Primary rated current Rated load Aperture (mm) Description (mm) Weight (kg)
LZCK310-10 300-1000A ≤10VA φ50 φ50 x φ110 x 32 1
LZCK322-10 300-1000A ≤10VA φ50 φ50 x φ110 x 52 1.6
LZCK350-10 30-1000A ≤25VA φ50 φ50 x φ110 x 105 3.1
LZCK720-10 30-1000A ≤25VA φ80 φ80 x φ110 x 50 2.1
LZCK2500-10 30-3000A ≤30VA φ120,140,160 φ120 x φ185 x 100 7
LZCG530-10 30-1000A ≤20VA φ45 φ45 x φ120 x 65 2.1
LZCG930-10 30-1500A ≤25VA φ60 φ60 x φ155 x 60 3.6
LZCT722-10 30-1500A ≤10VA φ82 φ82 x φ130 x 55 2.3
LZCG2500-10 30-3000A ≤30VA φ120,140,160 φ120 x φ185 x 100 7

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.

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