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Current transformer for terminal/concentrator/mete-EHC-CTS Series for High accuracy
views:1923time:2020-07-21 11:46:47
EHC-CTS  Series  for High accuracy EHC-CTS  Series  for High accuracy
Features

Key Features/Application

l EHC-CTS series precision current transformer adopts patent No. CN102709042B “a kind of current transformer” 

       The measurement accuracy is: 0.01, 0.005, 0.002, high stability, low temperature drift, mainly used for AC

       current measurement instrument

l Compared with conventional current transformer, CTS series precision current transformer has the advantages of:

(1)   High accuracy: 0.01, 0.005, 0.002, or higher precision level.

(2)   Low temperature drift: normal temperature, high temperature (+85 degrees), and low temperature (-40 degrees) conditions, the basic measurement error is constant, temperature drift coefficient can be selected according to the requirements of  25ppm/15ppm/10ppm/5ppm/ .

(3)   The error of current transformer caused by the heat effect is zero.

(4)   The output voltage signal strength of current transformer can be customized according to user requirementswhen the maximum input current.



Specifications


CTS  Series for High accuracy 


1.1 Specifications and Parameters


Model

Rated Primary current 

      InA

Maximum current

Imax(A)

Rated secondary current(mA)

Accuracy class(class)

Load Resistance

Rb(Ω)

CTS1.5(6)A/5mA0.01S10?

1.5

6

5

0.01

10

CTS1.5(6)A/5mA0.005S10?

1.5

6

5

0.005

10

CTS1.5(6)A/5mA0.002S10?

1.5

6

5

0.002

10

CTS1.5(10)A/5mA0.01S10?

1.5

10

5

0.01

10

CTS1.5(10)A/5mA0.005S10?

1.5

10

5

0.005

10

CTS1.5(10)A/5mA0.002S10?

1.5

10

5

0.002

10

CTS0.3(1.2)A/1mA0.01S10?

0.3

1.2

1

0.01

10

CTS0.3(1.2)A/1mA0.005S10?

0.3

1.2

1

0.005

10

CTS0.3(1.2)A/1mA0.002S10?

0.3

1.2

1

0.002

10

CTS0.3(10)A/1mA0.01S10?

0.3

10

1

0.01

10

CTS0.3(10)A/1mA0.005S10?

0.3

10

1

0.005

10

CTS0.3(10)A/1mA0.002S10?

0.3

10

1

0.002

10

 

1.2 Ratio error limit±(%)



Ratio error limit±(%)

Accuracy class

Imax

0.5Imax

2In

In

0.5In

0.2In

0.1In

0.05In

0.02In

0.01In

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.02

0.005

0.005

0.005

0.005

0.005

0.005

0.005

0.005

0.005

0.005

0.01

0.002

0.002

0.002

0.002

0.002

0.002

0.002

0.002

0.002

0.002

0.004

 

1.3 Phase displacement limit(′)



Phase displacement limit(′)

Accuracy class

Imax

0.5Imax

2In

In

0.5In

0.2In

0.1In

0.05In

0.02In

0.01In

0.01

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.3

0.6

0.005

0.15

0.15

0.15

0.15

0.15

0.15

0.15

0.15

0.15

0.3

0.002

0.06

0.06

0.06

0.06

0.06

0.06

0.06

0.06

0.06

0.12

 


TIM图片20200721114656.png




Dimensions(mm)

image.png


Mark * is Dotted terminalMark “REF” as reference dimension

Wire length L\M according to customer requirements




1.4 The connection between CTS series current transformer and ADC or metering chip is as follows


image.png



1.5 Schematic diagram


image.png

 

Instructions:

CTS series current transformer is a three terminal output current transformer, in which the red line is the positive pole of current output, the black line is the ground wire, and the white line is the negative pole of current output. When using, the current sampling resistance R1 shall be connected between the red line [positive pole of current output] and the black line [ground wire], the current sampling resistance R2 and the current sampling resistance R1 shall be connected between the white line [negative pole of current output] and the black line [ground wire] The equivalent resistance is the current sampling resistance R2, and the precision level of the resistance is 0.1% or higher. It is recommended to adopt high-precision low-temperature drift resistance such as 25ppm / ℃, 15ppm / ℃, 10ppm / ℃, 5ppm / ℃.





Measurement error accuracy test:

Active measurement error test data: In = 1.5A, Imax=6A

Accuracy class of measuring and calibration platform is 0.03%



image.png

modelEHC-CTS Series for High accuracy
Current transformer for terminal/concentrator/mete
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