Thytronic SME2-IS User Manual

27
SME2-IS - Manual - 06- 2021
FUNCTIONAL CHARACTERISTICS
Calculated
The physical measured are composed vectorially; for each of the parameters listed below, the effec-
tive value (RMS) of the fundamental component is returned:
• fundamental component of each of the three phase-to-phase voltages: U
12
, U
23
, U
31
• fundamental component of the calculated residual current I
E
• fundamental component of the calculated residual voltage U
E
Phase shift
• Phase shift of each current relative to its respective phase voltage (negative with current delayed
relative to the voltage): Phi
L1
, Phi
L2
, Phi
L3
,
• Phase shift of each current relative to the phase-to-phase voltage of the two remaining phases
(negative with current delayed relative to the voltage): Alpha
L1
, Alpha
L2
, Alpha
L3
,
• Phase shift of each current relative to its respective phase voltage (negative with current delayed
relative to the voltage): Phi
E
,
Sequences
• Fundamental component of the direct sequence current: I
1
• Fundamental component of the reverse sequence current: I
2
• Fundamental component of the reverse sequence voltage: U
2
Averages
• Fixed average (I
L1FIX
, I
L2FIX
, I
L3FIX
, ±P
FIX
, ±Q
FIX
)
The arithmetic means of the phase currents I
L1
, I
L2
, I
L3
, the active power ±P and the reactive power
±Q,
acquired every second, are calculated over a period t
FIX
which can be set from 1 to 60 minutes
and updated at the end of the period.
U12.ai
U
L1
U
12
= U
L1
- U
L2
U
12
U
23
U
31
U
23
= U
L2
- U
L3
U
31
= U
L3
- U
L1
U
L2
U
L2
U
L3
U
L1
U
L3
(U
n
)
(U
n
)
(U
n
)
U
L1
U
12
U
31
U
23
U
L3
U
L2
IEC.ai
I
L1
I
E
= I
L1
+ I
L2
+ I
L3
I
E
I
L3
I
L2
(U
En
)
UEC.ai
U
L1
U
E
= U
L1
+ U
L2
+ U
L3
U
E
U
L3
U
L2
(U
En
)
Fase.ai
ϕ
L1
= ∠I
L1
- ∠U
L1
Phi
L1
, Phi
L2
,Phi
L3
Phi
E
(° )
(°
)
(°
)
Alpha
L1
, Alpha
L2
,Al pha
L3
U
L1
ϕ
L2
= ∠I
L2
- ∠U
L2
ϕ
L3
= ∠I
L3
- ∠U
L3
ϕ
E
= ∠U
E
- ∠I
E
α
L1
= ∠I
L1
- ∠U
23
α
L2
= ∠I
L2
- ∠U
31
α
L3
= ∠I
L3
- ∠U
12
U
L2
U
L2
I
L1
I
L2
I
L3
U
E
I
E
I1-I2.ai
I
L1
I
2
I
2
= (I
L1
+ e
-j120°
I
L2
+ e
+j120°
I
L3
) / 3
I
1
= (I
L1
+ e
+j120°
I
L2
+ e
-j120°
I
L3
) / 3
I
L3
I
L2
(I
n
)
I
1
(I
n
)
e
-j120°
= -
√3
j
1
2 2
-
e
+j120°
= -
√3
j
1
2 2
+
U2.ai
U
L1
U
2
U
2
= (U
L1
+ e
-j120°
U
L2
+ e
+j120°
U
L3
)/3
U
L3
U
L2
e
-j120°
= -
√3
j
1
2 2
-
e
+j120°
= -
√3
j
1
2 2
+
(u
n
)

Thytronic SME2-IS Specifications

General

Brand	Thytronic
Model	SME2-IS
Category	Security Sensors
Language	English