AIR COOLED HIGH CURRENT DC SHUNTS

2276 Air Cooled High Current DC Shunt
The Type 2276 High Current DC Shunt range of shunts are specially designed for use up to 20,000 Amperes and maybe used on a steady D.C. load or for pulse work.

Limit of Error
Under steady condition the Type 2276 shunts keep within 0.1% up to full rated current but this figure is greatly improved if forced air is used for cooling.

Current Shunt stability

The stability of these shunts under steady conditions is 0.01% or better. 
A typical figure, 20000 Ampere shunt was found to be better than 0.005%.

Compensation for Phase Angle Errors

When used for pulse work, the mutual inductance between the potential leads and the current path in the shunt can be set to compensate for the phase angle between the current in the shunt and the voltage 
between the potential points. 

The self inductance of the current through the shunt depends on the arrangement of the bus bars. 
If the return bus bar is made to follow the contours of the shunt and is kept close to it, 
the value can be kept to 0.01mH or less.

High Current DC Shunt Construction

The construction of the Type 2276 High Current DC Shunts are similar to the Type 4638 but they are usually supplied in a steel lifting frame to facilitate transporting them without distortion. 
They are not supplied on a base nor fitted with a protecting cover.