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Appendix: T
e
chnical Specifications
53
Accuracy, %
Range
Display resolution (%Rdg)
Parameter
Full scale
Rdg
FS
Conditions
@
range
Apparent
energy
ac
co
rdi
ng t
o po
wer ac
cu
rac
y
0 t
o 99,999
MVA
h
1 kV
Ah
@
1 t
o 99,999 kV
Ah
10 kV
Ah
@
100 t
o 999.99 M
VAh
100 kV
Ah
@
1,000 t
o 9,999.9 M
VAh
1M
VA
h
@
10,000 t
o 99,999 M
VAh
PT
=
external p
otential transform
er ratio
CT
, CT
Prim
ary Curr
ent =
p
rim
ary current rating
of external current transform
er
FSU = voltag
e full scale
FSI
= current full scale
U
1
= voltage fundamental
I 1
= current fundamental
@ 10% to 120% of voltage FS and 2% to 120% of current FS
Higher resolution is ac
hievable via communications
Where the current is
>
10% FS, the energy
accuracy
is better than 1.5% Rdg.
80% to 120% of voltage FS and 10% to 100% of current FS
A
dditional Notes
1. Accuracy
is expressed as
±
(percentage of r percentage of full scale)
±
1 digit. This does not include
inaccuracies introduced by
the
user's potential and current transformers.
2. Specifications assume: voltage and current w
a
ve forms w
ith THD
≤
5% for kvar, kVA and PF; reference operating temperature: 20 - 26
°
C.
3. Ordinary
measurement error is
considerably
less than the specified accu
racy
w
h
ich indicates maximum error.
Содержание C191HM
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