The LDK series of split core-type current transformers are suitable for current measurement, signal sampling and microcomputer protection of electrical equipment in 10kV AC power systems. The current transformer has the following characteristics: small size, light weight, splittable and easy to install. It is widely used in compact full-insulation ring network switchgear, and is very suitable for RSU, FTU and other remote terminal equipment to form a sampling unit for the whole system data support. It is quick and easy to attach directly to the connected incoming and outgoing cable during installation. It has been widely used in compact full-insulation ring switchgear such as SafeRing/Plus, Uniswitch, RM6/SM6, SVS, GA/GE, FB, SS, etc. It is also used in combined substation and cable distribution box.
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Specifications:
Rated frequency: 50Hz or 60Hz;
Rated secondary current: 5A or 1A;
Power frequency withstand voltage: 3kV/1min
Rated expansion current: 120%ln;
Executive standard: GB20840.2-2014;
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Conditions:
Temperature: -35°C~+55°C
Daily average humidity: ≤40%
Altitude: ≤3000m
Atmosphere: without heavy pollution
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Installation diagram:
Specification table:
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Model
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LTK1-10
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Use
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current mesurment
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current protection
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Current ratio
I1 / I2
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Accuracy level and rated
load（VA）
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0.5
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1
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3
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10P15
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10P10
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10P5
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200/1
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1.25
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1
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2
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300/1
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2.5
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1
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2.5
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400/1
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5
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1
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3.75
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500/1
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5
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2.5
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5
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600/1
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5
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|
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2.5
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5
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200/5
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2.5
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|
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2.5
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300/5
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2.5
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|
|
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2.5
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400/5
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5
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2.5
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3.75
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500/5
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5
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2.5
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5
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600/5
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5
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2.5
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5
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800/5
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5
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2.5
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5
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Dimensions:
LDK series splittable type current transformer:
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Model
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Current ratio1V/5V
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Rated load range
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Dimensions (mm)
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LDK1-10
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300～800A
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≤10VA
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φ105×φ50×35
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LDK2-10
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40～1200A
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≤30VA
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φ110×φ50×52
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LDK3-10
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30～1200A
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≤60VA
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φ110×φ50×100
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LDK4-35
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50～600A
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≤15VA
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φ135×φ70×80
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LDK5-35
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50～1000A
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≤10VA
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φ150×φ100×75
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LDK6-10
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30～1200A
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≤60VA
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φ110×φ50×75
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LDK7-10
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300～600A
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≤10VA
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φ115×φ70×40
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LDKS1-10
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300～600A
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≤10VA
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φ70×φ30×40
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LDKS2-10
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300～600A
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≤10VA
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φ特定×φ40×55
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LTK1-10
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200～800A
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≤5VA
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φ130×80φ×45
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LTK2-10
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200～600A
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≤5VA
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φ140×φ96×30
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