FUNCTION CHARACTERISTICS
59
• Minimum (
I
L1MIN
,
I
L2MIN
,
I
L3MIN
, ±
P
MIN
, ±
Q
MIN
)
Inside an adjustable time interval
t
ROL
, the minimum magnitude is calculated for phase currents
I
L1
,
I
L2
,
I
L3
, active power ±
P
and reactive power ±
Q
of measures taken every second. The average
values are stored at the end of the same time interval
t
ROL
(Rolling demand common parameter).
Power
• Phase active power: ±
P
L1
, ±
P
L2
, ±
P
L3
,
• Total active power: ±
P
• Phase reactive power: ±
Q
L1
, ±
Q
L2
, ±
Q
L3
,
• Total reactive power: ±
Q
• Total apparent power:
S
Energy
• Positive and negative active energy (one second refresh): +
E
A
, -
E
A
,
• Total active energy (one second refresh):
E
A
,
• Positive and negative reactive energy (one second refresh): +
E
Q
, -
E
Q
,
• Total reactive energy (one second refresh):
E
Q
Use of over-described measures is shown in the following tables.
Min-Demand.ai
Minimum value of averaged inside time interval
t
ROL
Average inside time interval
t
ROL
Reset
I
L1MIN
I
L 2MIN
I
L 3MIN
±
P
MIN
±
P
±
Q
(
I
n
)
(
P
n
)
(
Q
n
)
±
Q
MIN
I
L2
I
L1
I
L3
1s
t
ROL
t
ROL
t
ROL
t
ROL
t
ROL
t
ROL
MIN
I
L xMIN
=
I
L xn
t
ROL
∙60
t
R OL
∙60
n=1
∑
1
MIN
±
P
MIN
=
±
P
n
t
ROL
∙60
t
R OL
∙60
n=1
∑
1
MIN
±
Q
MIN
=
±
Q
n
t
ROL
∙60
t
R OL
∙60
n=1
∑
1
P.ai
±
P
L1
=
U
L1∙
I
L1∙
cos
ϕ
L1
±
P
L1
, ±
P
L 2
,±
P
L 2
,±
P
±
P
L 2
=
U
L 2∙
I
L 2∙
cos
ϕ
L 2
±
P
L 3
=
U
L 3∙
I
L 3∙
cos
ϕ
L 3
±
P
=
P
L1+
P
L 2+
P
L 3
(
P
n
)
(
p.u.
)
cosPhi
L1
,
cosPhi
L 2
,
cosPhi
L 3
U
L1
U
L2
U
L3
I
L1
I
L2
I
L3
Q.ai
±
Q
L1
=
U
L1∙
I
L1∙
sin
ϕ
L1
±
Q
L1
, ±
Q
L 2
,±
Q
L 2
,±
Q
±
Q
L 2
=
U
L 2∙
I
L 2∙
sin
ϕ
L 2
±
Q
L 3
=
U
L 3∙
I
L 3∙
sin
ϕ
L 3
±
Q
=
Q
L1+
Q
L 2+
Q
L 3
(
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
E.ai
E
A
+ = ∫(+
P
dt)
E
A
- = ∫(-
P
dt)
E
A
= ∫(
P
dt)
E
Q
+ = ∫(+
Q
dt)
E
Q
- = ∫(-
Q
dt)
E
Q
= ∫(
Q
dt)
E
A
+,
E
A
-,
E
A
E
Q
+,
E
Q
-,
E
Q
+
P
-
P
+
Q
-
Q
(Wh)
(varh)
XMR-D EQUIPMENT MANUAL
Ed. 2.9 - 02/2021
