MC30-BC
Doc. N°
MO-0365-ING
Copyright 2008
FW 980.09.01.X
Date
15.06.2022
Rev.
1
Pag.
12
of
37
3.2. - I> (1F51) - First overcurrent protection level
FuncEnab
→
Enable
[Disable / Enable]
Options
→
TCC
D
[D / A / B / C / MI / VI / I / EI / / SI]
→
BI
Disable
[Disable / Enable]
→
Trg
Enable
[Disable / Enable]
TripLev
→
I>
0.5
In
(0.10
4.00)
step 0.01
In
Timers
→
tI>
2.00
s
(0.05
60.00)
step
0.01
s
Description of variables
FuncEnab
: If disable the function is disactivated
TCC
: Time current curves
D
= Independent Definite Time
A
= IEC A Inverse
B
= IEC B Very Inverse
C
= IEC C Extremely Inverse
MI
= IEEE Moderate Inverse Curve
VI
= IEEE Very Inverse Curve
I
= IEEE Inverse Curve
EI
= IEEE Extremely Inverse Curve
SI
= IEEE Short Inverse Curve
BI
: Operation controlled by Blocking Digital Input
Trg
: Function operation triggers the oscillographic wave form capture
(see § Oscillographic Recording)
I>
: Minimum phase current pick-up level (limited to 40 times In)
tI>
: Trip time delay
Trip when
:
The current trip level is exceeded for time “tI>”.
When the function is tripped
:
Signalization
=
Led “Trip” is illuminated
Last Trip
= Is recorded
Function reset when
: The current drop below 95% I>.
Led reset when
: push-button is pressed
