Hello

I need to measure current up to 1600A for 24V DC
if exceeded the tresholdvalue it'snecessary interrupt the circuit.

I suppose, I can use HALL sensor.
Anyone with experience? Can you offer some sample connections are with Siemens components?
Or exists some applications?

thank's for help

Martin

Stefo

Hello

I need to measure current up to 1600A for 24V DC
if exceeded the tresholdvalue it'snecessary interrupt the circuit.

I suppose, I can use HALL sensor.
Anyone with experience? Can you offer some sample connections are with Siemens components?
Or exists some applications?

thank's for help

Martin

@nkur

For measuring DC current one needs to connect DC ammeter with ANLOG or DIGITAL signal output with shunt of 75mV/24V DC which is connected in parallel to the ammenter for measuring DC current.

Using this signal we can use it accoding to the requirement.

metwally mustafa

current transformers is preferable in this situation , as it can use in high current measurements with diffirent turns ratio ...

Stefo

Hello

I need to measure current up to 1600A for 24V DC
if exceeded the tresholdvalue it'snecessary interrupt the circuit.

I suppose, I can use HALL sensor.
Anyone with experience? Can you offer some sample connections are with Siemens components?
Or exists some applications?

thank's for help

Martin

jeet2907

@nkur

For measuring DC current one needs to connect DC ammeter with ANLOG or DIGITAL signal output with shunt of 75mV/24V DC which is connected in parallel to the ammenter for measuring DC current.

Using this signal we can use it accoding to the requirement.

Dear @nkur / Expert

Thanks for your post.

But i want to know that why one needs to connect DC ammeter with ANLOG or DIGITAL signal output with shunt of 75mV/24V DC which is connected in parallel to the ammenter for measuring DC current.
What happen if does not use the same for measurement of DC current?

jeet2907

@nkur

For measuring DC current one needs to connect DC ammeter with ANLOG or DIGITAL signal output with shunt of 75mV/24V DC which is connected in parallel to the ammenter for measuring DC current.

Using this signal we can use it accoding to the requirement.

Dear @nkur / Expert

Thanks for your post.

But i want to know that why one needs to connect DC ammeter with ANLOG or DIGITAL signal output with shunt of 75mV/24V DC which is connected in parallel to the ammenter for measuring DC current.
What happen if does not use the same for measurement of DC current?

Navnag

Stefo

Hello

I need to measure current up to 1600A for 24V DC
if exceeded the tresholdvalue it'snecessary interrupt the circuit.

I suppose, I can use HALL sensor.
Anyone with experience? Can you offer some sample connections are with Siemens components?
Or exists some applications?

thank's for help

Martin

Hello Stefo

You have two options :

a) Use a 75mV Shunt in series of 24VDC power circuit. Use a mV to mA Converter transducer
( WIth isolation ) . the mA signal can be connected to a meter / Analog input of a PLC
This should be sufficient for upto 1600A Current range

I am attaching a drawings extracted from one of the projects where we used Shunt to measure DC current in PLC with good results.

b) Hall effect transducers are usually used for higher current> 1000 amps e.g. for Graphite Baking
Furnaces, Aluminum / Zinc / CopperElectrolyses etc whe currents can go upto 100kA and
beyond. This would of course be a much more expensive that the first option.

The Hall effect Transducers usually provide a mA signal proportional to the DC Current which can
be connected to a meter / PLC Analog Input


Hope this helps

Cheers

Navnag

@nkur

can you please explain you the shunt that we are connecting to the ammeter has a unit of mV instead of OHM??

Navnag

@nkur

can you please explain you the shunt that we are connecting to the ammeter has a unit of mV instead of OHM??

Hello @nkur

DC Shunts are always specified as per the Rated Current and Voltage Drop at Rated Rurrent.

e.g. a 2000Amp 75mV Shunt means there will be 75mV drop across the shunt at 2000Amp.

Ohms can be calculated easily using the Ohms Law R = V/I = 0.075 / 2000 Ohms

The Shunt needs to be designed for the rated current that has to pass through it.

Hope this helps

Cheers

Navnag

@nkur

in one of my project i need to order a shut havving voltage of 550V DC and current of 50A please provide the deatils how order n what to mention during its selection process

@nkur

Navnag

Stefo

Hello

I need to measure current up to 1600A for 24V DC
if exceeded the tresholdvalue it'snecessary interrupt the circuit.

I suppose, I can use HALL sensor.
Anyone with experience? Can you offer some sample connections are with Siemens components?
Or exists some applications?

thank's for help

Martin

Hello Stefo

You have two options :

a) Use a 75mV Shunt in series of 24VDC power circuit. Use a mV to mA Converter transducer
( WIth isolation ) . the mA signal can be connected to a meter / Analog input of a PLC
This should be sufficient for upto 1600A Current range

I am attaching a drawings extracted from one of the projects where we used Shunt to measure DC current in PLC with good results.

b) Hall effect transducers are usually used for higher current> 1000 amps e.g. for Graphite Baking
Furnaces, Aluminum / Zinc / CopperElectrolyses etc whe currents can go upto 100kA and
beyond. This would of course be a much more expensive that the first option.

The Hall effect Transducers usually provide a mA signal proportional to the DC Current which can
be connected to a meter / PLC Analog Input


Hope this helps

Cheers

Navnag

Hi there

can you please explain you the shunt that we are connecting to the ammeter has a unit of mV instead of OHM??

MHasan

you canuse siemens PAC3200 device for measuring current.

MHasan

you canuse siemens PAC3200 device for measuring current.

Hello,

If an optically isolated Analog input card was utilized, would a conditioner/isolator still be required?

Thanks.

U_516564a6-6a2a-4314-be0e-d7ef89ab9118

If an optically isolated Analog input card was utilized, would a conditioner/isolator still be required?

 If you have Individual Channel Isolation, then you don't need a signal conditioner / isolator ( Pl ensure that the isolation is sufficiently rated ).

However, normally a Signal Conditioner / Isolator is strongly advised for such signals.

Cheers

Navnag