LZCK2500-10 High accuracy 33KV Split Core Zero Phase Current transformer

split core zero phase current transformer

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-Safe Ring/Safe Plus...and cable distribution boxes.
The current 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.


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).


Technical parameters 
Standards IEC60044-1; IEC 61869-2; NTC 2205; ANSI C57.13; GB1208-2006
Rated primary current 500-1500A
Rated load ≤20VA
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) φ120xφ185x100
Weight (kg) 7
Operating conditions 
Operating temperature -35°C to +55°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 LZCK2500-10 LZCK2500-10
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
300/5 5 5 5 2.5 5 7.5
400/5 5 5 5 2.5 5 7.5
500/5 5 7.5 7.5 5 7.5 10
600/5 5 7.5 7.5 5 7.5 10
800/5 10 10 10 5 10 15
1000/5 10 15 15 5 10 15
1200/5 15 20 20 10 15 20
1500/5 15 20 20 10 15 20

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 ABS+Resin  IP65
LMCK185-10 300-3000A ≤25VA φ185 350×283×55 4.5 ABS+Resin  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)
LZCK720-10 20-1000A ≤25VA φ60 φ80 x φ110 x 50 2.1 Resin silicon case (option)
LZCK2500-10 500-1500A ≤20VA φ120 φ120 x φ185 x 100 7 Resin silicon case (option)
LZCG530-10 30-600A ≤20VA φ45 φ45 x φ120 x 65 2.1 Resin silicon case (option)
LZCG930-10 100-1500A ≤25VA φ60 φ60 x φ155 x 60 3.6 Resin silicon case (option)
LZCT722-10 20-600A ≤10VA φ82 φ82 x φ130 x 55 2.3 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.

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