Thytronic NA20, Manual, Page: 111 / 208

MEASURES, LOGIC STATES AND COUNTERS
111 NA20 - Manual - 04 - 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
Direct
• Frequency ( f )
• RMS value of fundamental component for phase currents ( I
L1
, I
L2
, I
L3
)
• RMS value of fundamental component for residual current ( I
E
)
Calculated
• Thermal image ( DTheta )
• 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
)
Sequence
• Positive sequence current ( I
1
)
• Negative sequence current ( I
2
)
• Negative sequence current/positive sequence current ratio ( I
2
/ I
1
)
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 ( 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
)
On demand
• 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
• Thermal image presetting
ON/OFF
• Remote trip
ON/OFF
• Reset on demand measures
ON/OFF