MC20-CEI
Doc. N°
MO-0431-ING
Microelettrica Scientifica S.p.A. - Copyright 2009
FW 1080.36.03.X
Date 18.11.2011
Rev.
3
Pag. 13
of 35
2.2.5.9 - I.R.F. - Internal Relay Failure
Stato
(Status)
→
Non Disp.
Non Disp. (
No Parameters
)
Opzioni
(Options)
→
Opz
NoScat.
[NoScat (
No Trip
) / Scatto (
Trip
)]
Livelli
(Trip Level)
→
Non Disp.
Non Disp. (
No Parameters
)
Tempi
(Timer)
→
Non Disp.
Non Disp. (
No Parameters
)
Opz
:
The variable “
Opl
“ can be programmed to trip the output relays same as the other
protection functions (
OpI = TRIP
), or to only operate the “
IRF
“ signal led without
tripping the output relays (
OpI = NoTRIP
).
2.2.5.10 - AnIn– Circuit Breaker Failure (F51BF)
Stato
(Status)
→
Abilit.
[Disabl.(
Disable
) / Abilit.(
Enable
)]
Opzioni
(Options)
→
TrR
Rele1
Relay1 – Relay2 – Relay3
Livelli
(Trip Level)
→
Non Disp.
Non Disp. (
No Parameters
)
Tempi
(Timer)
→
tBF
0.25
s
(0.05
÷
0.75)
step
0.01
s
→
tInc
0.25
s
(0.05
÷
5.00)
step
0.01
s
Stato
(Status)
:
If disable the function is disactivated
TrR
:
Output relay programmed for trip command to the Circuit Breaker
tBF
:
Trip time delay
tInc
:
C/B Discrepancy time
Operation: If after the time “
tBF
” from pick-up of the programmed relay “
TrR
” the current measured still
exceeds 5%In, the output relay associated to the “
AnIn
” function is operated (relay another than
TrR
).
