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        Current transformer for terminal/concentrator/mete-EHC-CTS  Series  for High accuracy
        
                    
        views：2520time：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 requirements，when the maximum input current.


                            
        
                
        
                                                
        
                    
        
                        Specifications
                    
        
                    
        
                        

        CTS  Series for High accuracy ：

        1.1 Specifications and Parameters

        Model
        Rated Primary current 
              In（A）
        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圖片20200721114656.png



        Dimensions(mm)
        image.png

        Mark * is Dotted terminal，Mark “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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