FAQ:
How does over-current protection (OCP) work on the N6700 series?
The power supply looks for a Constant Voltage-to-Constant Current (CV to CC) transition in the operating status of the instrument. When the transition is detected, the over-current protection trips.
Note that the time it takes the unit to go into CC mode varies - depending on the CC setting and the magnitude of the over-current above that setting. For example, if the CC setting is 3.5 A and the over-current is 3.7 A, it will take the unit about 27 milliseconds to go into CC mode and set the CC status bit. Another example, if the CC setting is 3.5 A and the over-current is 5.5 A, it would take the unit about 1 millisecond to go into CC mode and set the CC status bit.
So, as shown in the above examples, if a current spike is extremely short the OCP will not trip.
Additionally, there is a programmable over-current protection delay feature available that lets you delay the over-current protection shutdown based on your application. For a detailed description of how an OCP delay function is programmed, refer to the N6700 User's Guide at http://literature.cdn.keysight.com/litweb/pdf/5969-2937.pdf?#page=88
Applies to: N6700A, N6700B, N6701A, N6702A, N6705A, N6705B, N6710B, N6711A, N6712A, N6715A, N6715B, N6731B, N6732B, N6733B, N6734B, N6735B, N6736B, N6741B, N6742B, N6743B, N6744B, N6745B, N6746B, N6773A, N6774A, N6775A, N6776A, N6777A, N6751A, N6752A, N6753A, N6754A, N6755A, N6756A, N6761A, N6762A, N6763A, N6764A, N6765A, N6766A, N6781A, N6782A, N6783A, N6784A, N6785A, N6786A
|
Visit our Power Products Forum for additional topics and discussions. Read technical postings on our Power Blog – Watt’s Up? |