MEASURES, LOGIC STATES AND COUNTERS
46
NA011 - Manual - 05 - 2022
5 M E A S U R E S , L O G I C S T A T E S A N D C O U N T E R S
5 M E A S U R E S , L O G I C S T A T E S A N D C O U N T E R S
Measures
• RMS value of fundamental component for phase currents (
I
L1
,
I
L2
,
I
L3
)
• RMS value of fundamental component for measured residual current (
I
E
)
Circuit breaker
The CB and 79 states are provided
• Position
Open - Closed - Unknown
Binary inputs
The input states are provided
• IN1 input
ON/OFF
• IN2 input
ON/OFF
• IN3 input
ON/OFF
Counters
For every protective element and control function several counters are available; the partial coun-
ters can be cleared by the user.
Every partial counter is reset to zero when ten thousand count is passed.
All partial counters can be cleared by means a single command; for this purpose the
Reset coun-
ters
command must be issued available inside the
Reset
menu.
• Counter ST I>
(start I> element)
• Counter ST I>>
(start I>> element)
• Counter ST I>>>
(start I>>> element)
• Counter ST IE>
(start IE> element)
• Counter ST IE>>
(start IE>> element)
• Counter TR I>
(trip I> element)
• Counter TR I>>
(trip I>> element)
• Counter TR I>>>
(trip I>>> element)
• Counter TR IE>
(trip IE> element)
• Counter TR IE>>
(trip IE>> element)
• Counter TR EXT
(Remote trip)
• Counter 79 RR
(Rapid reclosures)
• Counter 79 SR
(Slow reclosures)
• Counter 79 DR
(Delayed reclosures)
• Counter 79 FR P
(Failed reclosures from 50/51 trip)
• Counter 79 FR E
(Failed reclosures from 50N/51N trip)
• Counter 79 FR X
(Failed reclosures from external trigger)
Fault recording - SFR
Recording
[1]
is triggered by:
• Relay activation (OFF-ON)
• External trigger (binary input) programmed as
Fault trigger
• Element start or trip
Twenty faults are recorded into a circular FIFO (First In, First Out) buffer.
[2]
Following information are stored in every record:
Read \ Faults \ Info
menu
• Faults stored
[3]
• Last fault
Read \ Faults \ Fault
menu
• Fault number
(F-Number)
• Fault Cause
(F-Cause)
• Fault Phases
(F-Phases)
• Phase currents
(F-IL1, F-IL2, F-IL3)
• Residual current
I
Er
F-IE)
• Date and time
(F-Year)
• Date and time
(F-Year)
• Date and time
(F-Month)
• ...
• Date and time
(F-Millisecond)
The fault log may be erased by means of the command available inside the
Read \ Faults \ Reset
menu
.
Event recording - Events
Recording is triggered by:
• Power up and/or Power down.
• Element start or trip.
• Binary input switch (OFF-ON or ON-OFF).
• Setting modify.
Note 1 Data concerning the twenty events are stored into non volatile memory; they are held in spite of power down
Note 2 Fault 0 is the newest event, while the Fault 19 is the oldest event
Note 3 Counter is updated at any new record; it may be cleared by means ThyVisor