EHC-CTS Series for High accuracy-Current transformer for terminal/concentrator/mete-Transformer-Products Show-Zhejiang Enhong Electronics Co., Ltd.

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/5mA0.01S10Ω	1.5	6	5	0.01	10
CTS1.5(6)A/5mA0.005S10Ω	1.5	6	5	0.005	10
CTS1.5(6)A/5mA0.002S10Ω	1.5	6	5	0.002	10
CTS1.5(10)A/5mA0.01S10Ω	1.5	10	5	0.01	10
CTS1.5(10)A/5mA0.005S10Ω	1.5	10	5	0.005	10
CTS1.5(10)A/5mA0.002S10Ω	1.5	10	5	0.002	10
CTS0.3(1.2)A/1mA0.01S10Ω	0.3	1.2	1	0.01	10
CTS0.3(1.2)A/1mA0.005S10Ω	0.3	1.2	1	0.005	10
CTS0.3(1.2)A/1mA0.002S10Ω	0.3	1.2	1	0.002	10
CTS0.3(10)A/1mA0.01S10Ω	0.3	10	1	0.01	10
CTS0.3(10)A/1mA0.005S10Ω	0.3	10	1	0.005	10
CTS0.3(10)A/1mA0.002S10Ω	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)

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：

1.5 Schematic diagram

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%