Overview：
LDC is high-precision through-current CT is suitable for current measurement,
energy metering, signal sampling and microcomputer protection of 10kV-35kV
power supply equipment for AC power system. The current transformer has the
following characteristics: small size, light weight and convenient
installation. It has been installed in SafeRing/Plus, Uniswitch, RM6/SM6, SVS,
GA/GE, FB, SS, FTR and other series of fully insulated ring network switchgear.
Widely used in combined substations and cable distribution boxes. And it is
very suitable for RTI, FTU and other remote terminal equipment to form a
sampling unit to provide accurate data support for the entire system.LDC high-precision straight-through current transformer is applicable to the current measurement, energy metering, signal sampling and computer protection against 10kV electrical equipment of an AC power system. The CT is characterized in small size, light weight, easy to install and others, and has been widely used in SafeRing/Plus, Uniswitch, RM6/SM6, SVS, GA / GE, FB, SS, FTR and other series of compact fully insulated ring network switchgears, modular substations and cable distribution boxes. Furthermore, the CT is ideal for being used with RTU, FTU and other remote terminal equipment to form sampling units, so as to support the entire system to provide accurate data.
The CT uses a new magnetic material as the core of the measurement winding, so it has high permeability, low saturation magnetic flux density and excellent stability, ensuring higher measurement accuracy and lower instrument security factor. And the core of the protective winding made from high quality silicon steel imported and processed by advanced technology ensures a higher accuracy limit factor.
The toroidal core and the secondary winding are made from high quality epoxy resin and are cast in flame-retardant plastic case by vacuum casting, characterized in moisture prevention, stable performance, and free maintenance. The CT has small size, compact structure and light weight, and is fixed in the cable chamber of the ring network switchgear. Passing the cable through the internal hole can complete the installation, simple and efficient , harmonious and beautiful.
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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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LDC Series Overview:
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Model
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Ø1 (mm)
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Ø2 (mm)
|
D (mm)
|
H (mm)
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h (mm)
|
|
LDC1-10
|
100
|
45
|
40
|
123
|
73
|
|
LDC2-10
|
100
|
45
|
70
|
123
|
73
|
|
LDC3-10
|
100
|
45
|
115
|
123
|
73
|
|
LDC4-10
|
100
|
62
|
40
|
123
|
73
|
|
LDC5-10
|
120
|
65
|
100
|
147
|
88
|
|
LDC6-10
|
90
|
40
|
100
|
112
|
68
|
|
LDC7-10
|
85
|
55
|
50
|
85
|
|
|
LDCJ1-10
|
120
|
45
|
65
|
147
|
87.5
|
|
LDCJ2-10
|
120
|
45
|
130
|
147
|
87.5
|
|
LDCJ1-35
|
138
|
54
|
60
|
157
|
88
|
|
LDCJ2-35
|
138
|
54
|
120
|
157
|
88
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Dimensions drawing:
Rated primary current，Accuracy class and rated load：
|
model
|
LDC4-10
|
|
Rated primary current (A)
|
Accuracy class and rated load (VA)
|
|
0.2S
|
0.2
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0.5
|
10P20
|
10P10
|
10P5
|
|
50
|
|
|
2.5
|
|
|
|
|
75
|
|
|
2.5
|
|
|
2.5
|
|
100
|
|
|
2.5
|
|
2.5
|
5
|
|
150
|
|
2.5
|
3.75
|
|
2.5
|
5
|
|
200
|
2.5
|
3.75
|
5
|
|
3.75
|
7.5
|
|
300
|
5
|
7.5
|
10
|
|
5
|
10
|
|
400
|
7.5
|
10
|
15
|
|
5
|
10
|
|
500
|
10
|
15
|
20
|
2.5
|
5
|
15
|
|
600
|
10
|
15
|
20
|
2.5
|
5
|
15
|
|
800
|
10
|
15
|
20
|
2.5
|
5
|
15
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rated secondary current is 5A or 1A.