Hi, I have just bought a CM3 with the intention of recording a 3 phase system. With help from Martyn at Pico I have managed to write a code in VB which monitors and logs the data whilst injecting data from another part of the system with descriptions of what is happening at the time.
At present the system seems to idle at around 7A per phase but the system has loads of large inverters in it so as a test we pulled the power and then reapplied about a minute later to see the effects of the inrush current.
What I have found is that the data seems to suggest that when power is removed, rather than the measurement immediately dropping to 0V it steps down over around 40 seconds to about 0.5A. When power is restored we go back to 7A over about 10 seconds with no massive inrush.
This doesn't make sense. Why wouldn't the reading immediately drop and then on powering up immediately go over 7A before settling. I have checked the sample rate seems to be 1ms