Current transformers and sensors

Precise current transformers of PPT line, based on nanocrystalline tape wound toroidal cores, current transformers of PT line, based on steel tape wound toroidal cores and current sensors of PS line, based on high permeability ferrite toroidal cores, are used for galvanic separated AC measurements.

The primary winding is usally set up of one put-through conducting wire, which leads through the inner transformer opening. The secondary winding is buld-in. With the change of primary winding put-through number, you can change the conversion ratio and its current range.

The specification of linearity, current range and conversion slope is valid, when the secondary winding is loaded with the recommended resistor. If the linearity isn't the primary demand, it is possible to change the value of resisor corresponding the demand and thereby to obtain needed conversion slope or maximum current.

Our standard offer consists of precise current transformer PPT4/Vi 1000, current transformers PT4/Vi 1000 and PT3/Vi 500 and current sensors PS2/Vi 200 and PS1/Ve 100.

Datasheets

Prices

Precise current transformer PPT4/Vi 1000 with high quality nanocrystalline core is optimised for precise line current measurement up to 20 A at transfer ratio 1 : 1000. Linearity by 50 Ω load less than 0,2 %. Ratio slope at this resistance is 50 mV/A.

Isolating voltage 2500 V and middle hole Ø 10 mm.

Very good technical data requires appropriate signal processing. The convertor example, designed especialy for these transformers, complies with these requirements. (Convertor is only an example and is not available for sale).

LINEARITY OF PRECISE CURRENT TRANSFORMER PPT4/Vi 1000

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Current transformer PT4/Vi 1000 with quality transformer sheet core is optimised for line current measurement in range of 0,2 - a few of hundred A at transfer ratio 1 : 1000. Linearity by 17 Ω load less than 1 %. Ratio slope at this resistance is 17 mV/A.

Isolating voltage 2500 V and middle hole Ø 10 mm.

LINEARITY OF CURRENT TRANSFORMER PT4/Vi 1000

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Current transformer PT3/Vi 500 with quality transformer sheet core is optimised for line current measurement in range of 0,2 - 100 A at transfer ratio 1 : 500. Linearity by 10 Ω load less than 3 %. Ratio slope at this resistance is 20 mV/A.

Isolating voltage 2500 V and middle hole Ø 6 mm.

LINEARITY OF CURRENT TRANSFORMER PT3/Vi 500

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Current sensor PS2/Vi 200 with cost-effective ferrite core is suitable for current sensing till units of kHz. In range of 0,5 - 10 A, frequency 50 Hz and load 1,5 Ω is ratio linearity in units of percent at slope 7,5 mV/A and current ratio 1 : 200.

It is used in current protection circuits, in current control loops, current feedbacks etc. Changing the value of resistance load can approximately adjust the conversion ratio for desired application.

Isolating voltage 2500 V and middle hole Ø 6 mm.

LINEARITY OF CURRENT SENSOR PS2/Vi 200

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Current sensor PS1/Ve 100 with cost-effective ferrite core is suitable for current sensing till units of kHz. In range of 0,3 - 3 A, frequency 50 Hz and load 1,0 Ω is ratio linearity in units of percent at slope 10 mV/A and current ratio 1 : 100.

It is used in current protection circuits, in current control loops, current feedbacks etc. Changing the value of resistance load can approximately adjust the conversion ratio for desired application.

Isolating voltage 2500 V and middle hole Ø 4 mm.

LINEARITY OF CURRENT SENSOR PS1/Ve 100

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