5.Operation
5.1 Basic Operation
Demand time and demand value of current demand
The demand time (t
o
) is the time until the measurement display value (I
o
) displays 95% of the input (I) when a
certain constant input (I) is given. To display 100% of the input (I), about three times more than the time (t
o
) is needed.
The demand value is the measurement display value with the above time characteristics, and it shows the overall average within
the demand time.
The demand value changes over a relatively long time, so it is not a
ffected by input changes within a short time.
Therefore, this is good for monitoring transformer overload.
Ⅰ
M
e
a
s
u
r
e
m
e
n
t
d
i
s
p
l
a
y
v
a
l
u
e
Time (t)
（Ⅰ
0
）
t
0
（Time period）
0.95Ⅰ
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