A current measurement scheme for high power laboratory

The high power laboratory mainly tests circuit breakers and transformers,the test current ranges from tens of A～hundreds of kA,the measurement of relevant test parameters should meet the corresponding standard requirements of the product.Shunt,rogowski coil and current transformer are usually used for current measurement in high power laboratory.The current measurement range of shunt and rogowski coil is large,while the current measurement range of current transformer is relatively small,covering dozens of A～several kA.A current measurement scheme suitable for high power laboratory is proposed,which can meet the requirements of current measurement for different products test.It is unnecessary to connect the current measuring device temporarily,avoiding the problems of reliability and safety,effectively improving the high power laboratory test efficiency.