Thytronic NA10 User Manual

TECHNICAL DATA
21
NA10 - Manual - 04 - 2022
3.9 MEASURES
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%
Frequency 0.02 U
n
3 mHz 1 U
n
2 mHz
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 the fundamental component for phase currents (I
L1
, I
L2
, I
L3
)
RMS value of the fundamental component for residual current (I
E
)
Calculated residual current
[1]
(I
EC
)
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 component of phase currents (I
L1-2nd
, I
L2-2nd
, I
L3-2nd
)
Maximum of the 2nd harmonic phase currents/fundamental component ratio
(I
-2nd
/I
L
)
3rd harmonic
Third harmonic component of phase currents (I
L1-3rd
, I
L2-3rd
, I
L3-3rd
)
Third harmonic component of residual current (I
E-3rd
)
4th harmonic
Fourth harmonic component of phase currents (I
L1-4th
, I
L2-4th
, I
L3-4th
)
5h harmonic
Fifth harmonic component of 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
)
PT100
[2]
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 computed residual current (vector sum of the phase currents) is provided for NA10 protection relays equipped with LPCT sensor inputs
Note 2 The temperature measuring is acquired by means of RTD probes Pt100 (eight Pt100 inputs with one MPT module); if the module is not available
the concerning measure is meaningless.

Thytronic NA10 Specifications

General

Brand	Thytronic
Model	NA10
Category	Relays
Language	English