TA1321 Series Minitype Precision AC Current Transformers - Beijing TransFar Electronics Group Co., Ltd

1．Features:

① Being able to be directly welded on PCB, beautiful outline.

② It is completely encapsulated, ensuring strong mechanical and environmental endurance, high voltage insulating ability, high accuracy, and safety and reliability.

2．Ambient Conditions:

① Ambient temperature: -55℃～+85℃;

② Relative humidity: ≤90% at 40℃;

③ Atmospheric pressure: 860～1060mbar(about 650～800mmHg).

3．Operating Frequency Range: 20Hz~1kHz

4．Insulation Thermal Class：Class F (155℃)

5．Safety Features:

① Dielectric resistance: >1000MΩ in normal condition;

② Insulation withstand voltages: 6000V 50Hz/1min

③ Fire retardancy: In conformity with UL94-V0.

6．Outline Drawing, Installation Dimension and Coil Diagram:( tolerance ± 0.5mm )

7．Typical Application and Technical Parameters:

①The parameters are listed in Table 1 while the sampling voltage is obtained directly by using a resistor (as shown in Fig.1 below).

②The parameters are listed in Table 2 while the sampling voltage is obtained by using an IC (as shown in Fig.2 below).

Table 1：

Model	Rated Input Current	Rated Output Current	Rated Sampling Resistance R_L	Rated Sampling Voltage	Phase Shift	Non Linearity	Linear Range	Withstand Voltage
TA1321-1K	10A	25mA	32Ω	0.8V	≤30’	≤0.2%	≥2 times of the rated value	≥6KV
TA1321-1KM	10A	25mA	40Ω	1.0V	≤37’	≤0.25%
TA1321-2K	10A	10mA	200Ω	2.0V	≤20’	≤0.2%
TA1321-2KM	10A	10mA	250Ω	2.5V	≤25’	≤0.25%
TA1321-3K	20A	10mA	300Ω	3.0V	≤15’	≤0.2%
TA1321-3KM	20A	10mA	375Ω	3.75V	≤19’	≤0.25%
TA1321-4K	30A	6mA	500Ω	3.0V	≤12’	≤0.2%	≥1.5 times of the rated value
TA1321-4KM	30A	6mA	625Ω	3.75V	≤15’	≤0.25%
TA1321-5K	40A	50mA	20Ω	1.0V	≤15’	≤0.2%
TA1321-5KM	40A	50mA	25Ω	1.0V	≤19’	≤0.25%
TA1321-6K	20A	25mA	20Ω	0.5V	≤20’	≤0.2%
TA1321-6KM	20A	25mA	25Ω	0.625V	≤25’	≤0.25%

Table 2：

Model	Rated Input Current	Rated Output Current	Rated Sampling Voltage	Phase Shift	Non Linearity	Linear Range	Withstand Voltage
TA1321-1K	10A	25mA	≤1/2 IC’s power supply	≤5’	≤0.1%	≥2 times of the rated value	≥6KV
TA1321-1KM	10A	25mA
TA1321-2K	10A	10mA
TA1321-2KM	10A	10mA
TA1321-3K	20A	10mA
TA1321-3KM	20A	10mA
TA1321-4K	30A	6mA
TA1321-4KM	30A	6mA
TA1321-5K	40A	50mA
TA1321-5KM	40A	50mA
TA1321-6K	20A	25mA
TA1321-6KM	20A	25mA

8．Attention:

① Connect the primary winding of the current transformer in series with the measured current loop, and operate the secondary winding in near short-circuit mode.

② Do not allow the secondary winding of the current transformer to be open-circuited and do not install any fuse in the secondary circuit.