Woodward easYgen-2000 Series User Manual page 131

Fig. 77: "Extremely inverse" characteristic
ID Parameter
4030 Monitoring
4034 Inverse time
characteristic
4035 Inverse time
overcurrent
T =
p
4036 Inverse time
overcurr. I =
P
4037 Inv time over‐
curr. I =
start
4031 Alarm class
37535B
Configure Monitoring > Generator > Generator Inverse Time-Ove...
CL Setting range Description
[Default]
2 [On] Overcurrent monitoring is carried out according to the following parameters.
Off No monitoring is carried out.
2 Selection of the used overcurrent characteristic.
[Normal] The "normal inverse" tripping curve will be used
High The "highly inverse" tripping curve will be used
Extreme The "extremely inverse" tripping curve will be used.
2 0.01 to 1.99 s Time constant T
[0.06 s]
2 10.0 to 300.0 % Current constant I
[100.0 %]
2 100.0 to 300.0 Lower tripping value for inverse time-overcurrent protection. If the monitored
% current is less than I
If I
start
[115.0 %]
2 Class A/B/C/D/ Each limit may be assigned an independent alarm class that specifies what
E/F action should be taken when the limit is surpassed.
[F]
Notes
For additional information refer to
on page 587
easYgen-2200/2500 | Genset Control
used to calculate the characteristics.
p
used to calculate the characteristics.
P
, the inverse time-overcurrent protection does not trip.
start
is less than I , I is used as the lower tripping value.
P P
Ä Chapter 9.5.1 "Alarm Classes"
Configuration
131