FUNCTION CHARACTERISTICS
28
NG10 - Manual - 04 - 2022
Demand
• Fixed demand (I
L1FIXH
, I
L2FIXH
, I
L3FIXH
)
Inside an adjustable time interval t
FIX
, an average magnitude is calculated for phase currents side
H (I
L1FIXH
, I
L2FIXH
, I
L3FIXH
) and side L (I
L1FIXL
, I
L2FIXL
, I
L3FIXL
). The average values are stored at the end
of the same time interval.
• Rolling demand - side H (I
L1ROLH
, I
L2ROLH
, I
L3ROLH
) and side L (I
L1ROLL
, I
L2ROLL
, I
L3ROLL
)
Inside an adjustable time interval N
ROL
∙t
ROL
, an average magnitude is calculated for phase currents
side H and side L
of measures taken every second, where t
ROL
is the length of any time subinterval
and N
ROL
is the number of the time intervals. The average values are stored at the end of the same
time subinterval.
• Peak phase currents - side H (I
L1MAXH
, I
L2MAXH
, I
L3MAXH
) and side L (I
L1MAXL
, I
L2MAXL
, I
L3MAXL
)
Inside an adjustable time interval t
ROL
, the maximum magnitude is calculated for phase currents-
side H and side L
of measures taken every second. The average values are stored at the end of the
same time interval t
ROL
(Rolling demand common parameter).
• Minimum phase currents s- side H (I
L1MINH
, I
L2MINH
, I
L3MINH
) and side L (I
L1MINL
, I
L2MINL
, I
L3MINL
)
Inside an adjustable time interval t
ROL
, the minimum magnitude is calculated for phase currents
- side H and side L
of measures taken every second. The average values are stored at the end of the
same time interval t
ROL
(Rolling demand common parameter).
Fix-Demand.ai
1s
I
L1FIXH
, I
L2FIXH
,I
L 3 F I XH
t
FIX
(I
n
H
)
I
L1FIXL
, I
L2FIXL
,I
L 3 F I XL
(I
n
H
)
I
L2H
I
L1H
I
L3H
I
L2L
I
L1L
I
L3L
I
LxFIX
I
Lxn
t
F I X
∙ 60
t
F I X
∙ 60
n=1
∑
1
t
FIX
t
FIX
t
FIX
Rol-Demand.ai
I
L1RO L H
I
L 2ROL H
I
L 3ROL H
(I
n
H
)
I
L1RO L L
I
L 2ROL L
I
L 3ROL L
(I
n
L
)
I
L2H
I
L1H
I
L3H
I
L2L
I
L1L
I
L3L
0
1 2 3 4 5
1s
t
ROL
t
ROL
N
ROL
t
ROL
t
ROL
t
ROL
6
t
ROL
I
LxROLx
= I
Lxk
t
ROL
∙60
t
ROL
∙60
k=1
∑
N
ROL
n=1 n
∑
1
N
ROL
1
Rolling demand example with N
ROL
=4
Average inside subinterval
t
ROL
Max-Demand.ai
I
L1MA XH
I
L 2 MA XH
I
L 3 MA XH
(I
n
H
)
I
L1MA XL
I
L 2 MA XL
I
L 3 MA XL
(I
n
L
)
1s
t
ROL
t
ROL
t
ROL
t
ROL
t
ROL
t
ROL
MAX
I
LxMA Xx
= I
Lxn
t
ROL
∙60
t
ROL
∙60
n=1
∑
1
I
L2H
I
L1H
I
L3H
I
L2L
I
L1L
I
L3L
Maximum value of averages inside time interval t
ROL
Average inside time interval
t
ROL
Min-Demand.ai
Reset
I
L1MINH
I
L2MINH
I
L3MINH
(I
n
H
)
I
L1MINL
I
L2MINL
I
L3MINL
(I
n
L
)
1s
t
ROL
t
ROL
t
ROL
t
ROL
t
ROL
t
ROL
MIN
I
LxMINx
= I
Lxn
t
ROL
∙60
t
ROL
∙60
n=1
∑
1
I
L2H
I
L1H
I
L3H
I
L2L
I
L1L
I
L3L
Minimum value of averaged inside time intervalt
ROL
Average inside time interval
t
ROL
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