SPT101 Voltage transformer_Pin type voltage transformer_Voltage Transformer_Products_SENCORUI (Shenzhen) Intelligent Electrical Co., Ltd.

Product Overview

Input current: 2mA; Output current: 2mA; Current ratio: 1000:1000

Applicable to convert high voltage signals into proportional low current signals, facilitating the use of measurement and protection equipment.

Passed ISO 9001:2015; fully compliant with RoHS and REACH requirements

Functional characteristics

Adopt nanocrystalline magnetic core (high precision, good linearity) Epoxy potting, safe and reliable; Flame retardant (compliant with UL94-V0); Environmental protection (compliant with EU RoHS and REACH standards) Small size, light weight, easy to assemble and weld.

Detecting overload current Ground fault detection Metering Analog to digital circuits

Operating environment: temperature -40℃~ +85℃, Storage environment: temperature -40℃~ +85℃, Relative humidity: no more than 95% (25℃) Reference standard: IEC 60044-1&GB&T 20840.1-2017&ANSI C57.13

Parameter specifications

ELECTRICAL PROPERTIES(at 25°C)
Model	Input Current	Output Current	Turns Ratio	Linear range	Phase Difference	Accuracy	Load resistance	Pressure resistance	Operating frequency
SPT101	2mA	2mA	1000:1000	5~120%	≤30’	0.2	≤20Ω	3000V	50Hz~60Hz

Precautions∶1、Pay attention to the load connected to the secondary of the transformer.，Exceeding the rated load capacity may result in reduced accuracy or saturation.。

2. If there is no suitable product for your use in the above table, our company can tailor-make products for you according to your technical and structural requirements.

Dimension units： (mm）

Dimensional tolerance： ±0.5mm(unless otherwise specified), pitch tolerance:±0.3mm

Note:Unless required, terminal resistors and one turn primary are not provided

Detection circuit

电压1 (2).png

Note: This schematic diagram is the basic working principle of the transformer, and the transformer sampling circuit can be customized.

图片1.png

As shown in the figure above: parallel resistor R direct output circuit, when the voltage transformer works at the rated current of 2mA, the resistance R is not greater than 300Ω (output maximum saturation voltage 1V), and the secondary load is R. The direct output circuit has a larger load phase difference, but the linearity is basically unchanged, still better than 0.1%. It is suitable for use in occasions with low requirements. C in Figure 1 can play a certain phase compensation role, and it can be omitted if there is no phase requirement. Compensation amount: △δ=-100πCR*3438′, this circuit should be selected as a precision transformer with a load of R. If the actual error of the 0-load precision transformer is still used, it will shift to the negative direction, but the linearity will remain basically unchanged.

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SPT101 Voltage transformer-SENCORUI

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