Thytronic NA10 - 5 MEASURES, LOGIC STATES AND COUNTERS; Measures; Protection; Delayed inputs

MEASURES, LOGIC STATES AND COUNTERS
88
NA10 - Manual - 04 - 2022
5 MEASURES, LOGIC STATES AND COUNTERS 5 MEASURES, LOGIC STATES AND COUNTERS
Measures
• Frequency (f )
• 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
)
Calculated
• Maximum current between I
L1
-I
L2
-I
L3
(I
Lmax
)
• Minimum current between I
L1
-I
L2
-I
L3
(I
Lmin
)
• Average current between I
L1
-I
L2
-I
L3
(I
L
)
2nd harmonic
• Second harmonic phase currents (I
L1-2nd
, I
L2-2nd
, I
L3-2nd
)
• Maximum of the second harmonic phase currents/ fundamental component percentage ratio I
-2nd
/I
L
(I
-2nd
/I
L
)
3rd harmonic
• Third harmonic phase currents (I
L1-3rd
, I
L2-3rd
, I
L3-3rd
)
• Third harmonic of residual current
[1]
(I
E-3rd
)
4th harmonic
• Fourth harmonic phase currents (I
L1-4th
, I
L2-4th
, I
L3-4th
)
5th harmonic
• Fifth harmonic phase currents (I
L1-5th
, I
L2-5th
, I
L3-5th
)
Demand phase
• Phase fixed currents demand (I
L1FIX
, I
L2FIX
, I
L3FIX
)
• Phase rolling currents demand (I
L1ROL
, I
L2ROL
, I
L3ROL
)
• Phase peak currents demand (I
L1MAX
, I
L2MAX
, I
L3MAX
)
• Phase minimum currents demand (I
L1MIN
, I
L2MIN
, I
L3MIN
)
Protection
For each protection threshold, the following data are available:
• Start ON/OFF
• Trip ON/OFF
• Logic block (Block1) ON/OFF
• Selective block (Block2) ON/OFF
• Cold Load Pickup ON/OFF
Delayed inputs
The binary input states, acquired downstream the delay timers are available:
• IN1 ON/OFF
• IN2 ON/OFF
• INx ON/OFF
Internal states
The state of the functions assigned to binary inputs are available:
• Reset LEDs ON/OFF
• Profile selection ON/OFF
• Fault trigger ON/OFF
• IE /IPh Block2 ON/OFF
• IPh Block2 ON/OFF
• IE Block2 ON/OFF
• Block1 ON/OFF
• Tcs1 ON/OFF
• Tcs2 ON/OFF
• Trip External protections ON/OFF
• Reset partial counters ON/OFF
• Reset CB monitoring data ON/OFF
• 52a ON/OFF
• 52b ON/OFF
• Open CB ON/OFF
• Close CB ON/OFF
• Remote trip ON/OFF
• Reset on demand measures ON/OFF
Note 1 The third harmonic component of the residual current is available for NA10 protection relays equipped with CT inputs