Thytronic NA011 - Use of Measured Values

FUNCTION CHARACTERISTICS
25
NA011 - Manual - 05 - 2022
• Fundamental component of the calculated residual current I
E
[1]
Use of measured values
Note 1 In versions with CT input, the residual current is available as a direct measure I
E
, while versions without residual current input the residual
current is only available as a calculated measure
IEC.ai
I
L1
I
E
= I
L1
+ I
L2
+ I
L3
I
E
I
L3
I
L2
(I
En
)
i
L1,
i
L2
, i
L3
I
L1,
I
L2
, I
L3
i
E
I
E
Binary input I
N1
inary input I
N2
,
inary input I
N3
Start (START) Relay K1...K4
Trip (TRIP) Relay K1...K4
Srart (START) LED
Trip (TRIP) LED Trip (50/51) LED Trip (50N/51N) LED Trip (CB OPEN) LED Trip (CB CLOSED) LED
79 LED
PROTECTION
Phase overcurrent (50/51)
     
Residual overcurrent (50N/51N)
     
CONTROL & MONITORING
Circuit Breaker Position (52b)
  
Circuit Breaker Position (52a)
  
Automatic Reclose (79)
 
Diagnostic
Protection states
Input states
Output states
MEASURES
Phase current

Residual current

EVENT RECORDING
Event 0
    
Event 1
    
Event ...
    
Event 99
    
FAULT RECORDING
Fault 0
    
Fault 1
    
Fault ...
    
Fault 19
    
OSCILLOGRAPHY
Record 1
        
Record 2
        