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Menu
55
VMD461_D00314_01_M_XXEN/10.2018
Function
(menu 3.4.1)
Enable/disable df/dt monitoring.
Resp. value
(menu 3.4.2)
Specify a limit value at which tripping is to be
executed (in 0.05 Hz/s steps).
Hysteresis
(menu 3.4.3)
Adjust hysteresis.
Meas. window
(menu 3.4.4) Period of time used to calculate the average of
the frequency changes (positive and negative
changes cancel each other out). The bigger the
measuring window selected the less sensitive
will the df/dt function be.
t
(off)
(menu 3.4.5)
Response delay: Period of time during which the
limit value
df/dt must be violated until the VMD461 shuts
down the electrical installation.
t
(on)
(menu 3.4.6)
Switch-on delay, when df/dt has caused a
shutdown. You can choose between a precise
value and "off". When the "off" setting is
selected, the normal switch-on delay
t
(on)
from
menu 3.8.3 will be used.
Содержание LINETRAXX VMD461
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