Current Shunt to a DC Ammeter
Current Shunt to a DC Ammeter
(OP)
I've 120A in a 110Vdc circuit and i've to choice a ammeter and is external current shunt.
How we size a current shunt to a DC Ammeter?
How the shunt works with the ammeter?
thanks in advanced
How we size a current shunt to a DC Ammeter?
How the shunt works with the ammeter?
thanks in advanced






RE: Current Shunt to a DC Ammeter
The indicator used to be a d'Arsonval movement analogue meter with the corresponding sensitivity. But digital DVMs are more common today.
There is a safety problem. The circuit has (in your case) at least 100 or 200 A short circuit capacity. That means that you either have to use cables that can take that current in case of a short circuit, or you have to fuse both wires close to the shunt.
Much better to use a DC transformer (LEM or similar product).
Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: Current Shunt to a DC Ammeter
You are really measuring voltage across the shunt.
RE: Current Shunt to a DC Ammeter
xnuke
"Live and act within the limit of your knowledge and keep expanding it to the limit of your life." Ayn Rand, Atlas Shrugged.
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: Current Shunt to a DC Ammeter
RE: Current Shunt to a DC Ammeter
Why they build this standard shunts in these values 60, 100 or 150 mV?
So in this particular case with 120A in a 110Vdc circuit what are the design and calculations options?