Thytronic NA30, Manual

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TECHNICAL DATA
25 NA30 - Manual - 04 - 2022
3.9 METERING
More data are available inside Section 5 - MEASURES, LOGIC STATES AND COUNTERS
‡ Accuracy (type tests)
MEASURE Reference values
Accuracy
Reference values
Accuracy
Phase current 0.1 I
n
0.2% 1 I
n
0.03%
Measured residual current 0.01 I
En
0.3% 1 I
En
0.02%
Measured residual voltage 0.01 U
En
0.02% 0.1 U
En
0.02%
Frequency 0.02 U
n
3 mHz 1 U
n
2 mHz
Phase 0.002 I
En
- 0.004 U
En
1.5° 0.005 I
En
- 0.01 U
En
- 0.1 I
En
- 0.5 U
En
0.2°
Positive/Negative sequence current I
1
= 0.5 I
n
0.5% I
1
= 1 I
n
0.5%
Pickup and operate time 1.5 x setting for fist element 5% ± 10 ms 2.5 x setting for other elements 5% ± 10 ms
‡ 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
)
RMS value of fundamental component for residual voltage ( U
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
)
Third harmonic of residual voltage ( U
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
)
PT100
[1]
Temperature PT1 ( T
1
)
Temperature PT2 ( T
2
)
Temperature PT3 ( T
3
)
Temperature PT4 ( T
4
)
Temperature PT5 ( T
5
)
Temperature PT6 ( T
6
)
Temperature PT7 ( T
7
)
Temperature PT8 ( T
8
)
Note 1 The measures of temperature are available only when the MPT module on Thybus is enabled (eigth Pt100 inputs)