time is running. The IDMT protection function will be triggered when the 1.05-fold
of the set reference current value is exceeded in one phase. The P631 will then
determine the maximum current flowing in the three phases and this value is
used for further processing. Depending on the characteristic selected and the
current magnitude, the P631 will determine the tripping time. Furthermore, a
minimum tripping time can be set; the tripping time will not fall below this
minimum independently of the magnitude of the current.
The IDMT protection function can optionally be blocked by the inrush stabilization
function of differential protection.
3 Operation
P631
P631/EN M/R-11-C // P631-310-650 3-137
To Next Page
Loading...
