Orion Current Sensor

The current sensor should be sized to meet the highest amperage expected in an application, however should be sized as small as possible to improve accuracy. For example, if an application has an expected maximum amperage of 275 amps, a 500A current sensor should be used. Some headroom should be left between the maximum expected amperage and the size of the current sensor to allow for brief current transients that may exceed the rating of the current sensor. For example, if the application is expected to draw 190 amps maximum, a 500A current sensor should be selected even though a 200A sensor is technically large enough. While accuracy is somewhat improved by using the smallest current sensor for the application, it is best to err on the side of getting a sensor that is larger than necessary since the accuracy is not greatly improved. The current sensors offered with the Orion BMS are dual range sensors and contain 2 sensors in each package. One sensor is smaller than the other and thi