vasgamme hall

7/31/2019 Vasgamme Hall

1/12

Current & Voltage Transducer

Open Loop CT

Closed Loop CT & VT

Magnetic Components

1 / 12 Rev. No. 2.0 / 03.12.2008


2/12

Technical Information

A Current Transducer is a device for measuring AC and DC currents based on the Hall-Effect technology.

The general functionality is described in the following diagram:

Figure 1: General concept of the Current Transducer function

BFi OPTiLAS provides Current Transducer using the following two technologies:

1) Open Loop Technology: 2) Closed Loop Technology:

Figure 2: Functional diagramm of the Open Loop Technology

Advantages: Advantages:

A current carrying conductor positioned through theaperture of the sensor creates a magnetic field that is

proportionate to the current.This field is concentrated by the core and sensed by

the Hall Effect element that is mounted in the air gap

of the core.The Hall generator is connected to the input of theamplifier who amplified the voltage.

The output is an output voltage.

- Very good accuracy and linearity

- Wide bandwidth

- Low gain drift

BFi OPTiLAS A well known partner for customized Chokes and Transformers who has an excellent reputationfor high quality & customer orientated support.Starting from simple Current Transformer designs and due to growing demand, we are now able to offeradvanced current and voltage measurement like complex signal shapes and high frequencies with high accuracy.We offer support in nearly all markets of Industrial, Automotive, Automation and Renewable Energies.To date, we are proud to provide you with more than 70 various designs.

Figure 3: Functional diagramm of the Open Loop Technology

- Smaller construction (size)

Open Loop Transducers use the simplestimplementation of the Hall-Effect.

Closed Loop Transducers have a compensationcircuit that improves the performance.

- Low power consumption

The Advantages are giving the best solution for costeffective current measurement!

The primary current lp produces a magnetic flux.

This magnetic flux is aligned by a complementary

flux produced by driving a current through thesecondary windings.

A hall device and associated electronic circuitgenerate the compensating current that is used for theoutput.

The conversion of the output current to an output

voltage is easily done by adding a measurementresistor, RM, in series with the secondary coil.

- Light in weight

The Advantages are giving the best solution foraccurate current measurement!

- Fast response time

Primary Current

IpConversion

B to UH

Intermediate:

Flux Density

B

Intermediate: Hall

Voltage

UH

Output

Voltage/Current

Vout / IoutConversion

Ip to B

Conversion

UH to Vout / Iout

1

Input - Current

Carrying Conductor

Softmagnetic Core Hall-Effect Sensor Electronic Circuit & Output

Magnetic Components

2 / 12 Rev. No. 2.0 / 03.12.2008


3/12

Overview - Current & Voltage Transducer

Current TransducerClosed Loop

Primary

nominal

r.m.s current

IPN [A]

PCB - PCB Through Hole -

PCB

Through Hole -

Connector

< 100 X X X

100 ... < 500 X X X

500 X

Open Loop

Primary

nominal

r.m.s current

IPN [A]


PCB

Through Hole -

Connector

< 100 X X

100 ... < 500 X

500 X

Voltage TransducerClosed Loop

Primarynominal

r.m.s current

IPN [A]


PCB

Through Hole -

Connector

< 100 X

100 ... < 500

500

Magnetic Components

1) Customer Solutions are possible 3 / 12 Rev. No. 2.0 / 03.12.2008


4/12

Current Transducer - Closed Loop

Picture Type Primary

nominal

r.m.s

current

IPN [A]

Primary current,

measuring

range

IP,range [A]

Supply

voltage

@

IPN,

VC [V]

Secondary

nominal

r.m.s

current

ISN [mA]

Mechanical

dimensions

(L x W x H)

[mm]

Window

size

[mm]

PCB - PCBG00K25B00A01 25/12/8/6/5 0...36/18/12/9/7 15 25 26 x 15 x 30 -

G00K25B00A02 25 0 ... 50 12...15 25 33.3 x 12.5 x 20.5 -

G00K25B00A10 25 / 12 / 8 0... 55 / 27 / 18 12...15 25 33.3 x 15 x 21 -

Through Hole - PCBG00K25B02A07 25 0 ... 50 12...15 25 36 x 14,5 x 32,5 15 x 10,4

G00K50B02A01 50 0 ... 80 12...15 50 36 x 14,5 x 32,5 15 x 10,4

G00K50B02A02 50 0 ... 100 12...15 25 36 x 14,5 x 32,5 15 x 10,4

G00K25B04A01 25 0 ... 50 12...15 25 33 x 14,5 x 25 7,6

G00K50B04A01 50 0 ... 80 12...15 50 33 x 14,5 x 25 7,6

Through Hole - ConnectorG00K50B12A01 50 0 ... 100 12...15 50 51,4 x 33,5 x 57,9

G00K50B16A01 50 0 ... 100 12...15 50 48,8 x 26 x 51,63 15,5 x 15,5

vasgamme hall

Documents