Thytronic SME2-IS User Manual

29
SME2-IS - Manual - 06- 2021
FUNCTIONAL CHARACTERISTICS
Power
• Signed active phase power: ±P
L1
, ±P
L2
, ±P
L3
,
• Signed active total power: ±P
• Signed reactive phase power: ±Q
L1
, ±Q
L2
, ±Q
L3
,
• Signed reactive total power: ±Q
• Total apparent power S
Measurement conventions
Phasor direction of rotation
The conventional direction of rotation assumed for the current phasors is counterclockwise.
Cyclic phase sequence
For a set of three current phasors rotating counterclockwise, one conventionally assumes a direct
cycle if the three phases follow the sequence L1, L2, L3, and an inverse cycle when the sequence
is L1, L3, L2.
P.ai
±P
L1
= U
L1∙
I
L1∙
cosϕ
L1
±P
L1
, ±P
L2
,±P
L2
,±P
±P
L2
= U
L 2∙
I
L 2∙
cosϕ
L2
±P
L3
= U
L 3 ∙
I
L 3 ∙
cosϕ
L3
±P = P
L1+
P
L 2+
P
L3
(P
n
)
(p.u.)
cos Phi
L1
, cos Phi
L2
,cos Phi
L3
U
L1
U
L2
U
L3
I
L1
I
L2
I
L3
Q.ai
±Q
L1
= U
L1∙
I
L1∙
sinϕ
L1
±Q
L1
, ±Q
L2
,±Q
L2
,±Q
±Q
L2
= U
L 2∙
I
L 2∙
sinϕ
L2
±Q
L3
= U
L 3 ∙
I
L 3 ∙
sinϕ
L3
±Q = Q
L1+
Q
L 2+
Q
L3
(Q
n
)
U
L1
U
L2
U
L2
I
L1
I
L2
I
L3
S.ai
±P
±Q
S
(S
n
)
S = P
2
+
Q
2
fasori.ai
fasori1.ai
Negative cyclic direction triplePositive cyclic direction triple
I
L1
I
L3
I
L2
I
L1
I
L2
I
L3

Thytronic SME2-IS Specifications

General

Brand	Thytronic
Model	SME2-IS
Category	Security Sensors
Language	English