MENTOR 12 USER’S MANUAL
SECTION 3: ADVANCED CONTROL – Page 69
•
Enter the desired time value in milliseconds in the window that defines the
duration of each increase. This time must at least be that expected for the
tripping of the relay element being tested.
•
Enter the desired time value in milliseconds in the
window that defines the duration of each initial
state (pre-fault, between increases). This time
must at least be that necessary to return the relay
to its standby state. This is especially important
when they are remote relays that need a minimum
pre-fault time with healthy voltages to be properly
polarised and to calculate the faults correctly.
•
Enter this value in the window that defines the
value of the magnitude for the end of the pulse
ramp. If this is greater than the initial value, the
pulse ramp will be ascending (positive increases)
and if it is less, the pulse ramp will be descending
(negative increases).
•
Enter the desired value in the window that defines
the value of each increase. Bear in mind that the
sign of the increases depends on the type of ramp
(ascending or descending).
•
The Pulse Ramp function, like all the advanced
control functions, has the possibility of entering a
delay in the deactivation of the power outputs in
connection with the detection of the defined trip
event, in order to simulate the switch time, for
example. To define this time, enter the desired
value in milliseconds in the relative window.
