KPT034 Voltage transformer_Needle Type Voltage Transformer_Voltage Transformer_Products

Product Overview

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

It is suitable for converting high voltage signal into low current signal proportional to it, which is easy to measure and protect the use of equipment.

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

Functional characteristics

Nanocrystalline magnetic core (high precision, good linearity) Epoxy potting, safe and reliable; Flame retardant (according to 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 Measure Analog to digital circuits

Operating environment: temperature -40℃~ +85℃, Storage environment: temperature -40℃~ +85℃, Relative humidity: not 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 number	Input current	Output current	Turn ratio	Linear range	Phase difference	Precision	Load resistance	Withstand voltage	Operating frequency
KPT034	2mA	2mA	1000:1000	5~120%	≤30’	0.2	≤20Ω	3000V	50Hz~60Hz

Note: 1, pay attention to the load connected to the transformer secondary, exceeding the rated load capacity may lead to Precision reduction or saturation.

2, if the above table is not suitable for your use of products, we can according to your technical and structural requirements tailored to your products.

034

Size unit: (mm)

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

Note: Terminal resistors and one-turn primary are not provided unless requested

Detection circuit

电压1 (2).png

Note: The principle diagram shows the basic working principle of the transformer. The sampling circuit of the transformer can be customized.

电压.png

As shown in the figure above: Parallel resistor R directly outputs the circuit. When the voltage transformer works at rated current 2mA, the resistance R is not more than 300Ω(output maximum saturation voltage 1V), and the secondary load is R. The direct output circuit is larger due to the load phase difference, but the linearity is basically unchanged, which is still better than 0.1%. Suitable for low-demand occasions. Figure 1 C can play a certain phase compensation role, no phase requirements can not be added. Compensation amount: △δ=-100πCR*3438 ', this circuit should be selected as the load R precision transformer. If the actual error of 0 load precision transformer is still offset in the negative direction, the linearity is basically unchanged.