Elspec G4420 User Manual

181
ELSPEC
G
G
4
4
K
K
F
F
i
i
x
x
e
e
d
d
P
P
o
o
w
w
e
e
r
r
Q
Q
u
u
a
a
l
l
i
i
t
t
y
y
A
A
n
n
a
a
l
l
y
y
z
z
e
e
r
r
U
U
S
S
E
E
R
R
&
&
I
I
N
N
S
S
T
T
A
A
L
L
L
L
A
A
T
T
I
I
O
O
N
N
G
G
U
U
I
I
D
D
E
E
Potential Transformer
Potential T ransformer co nfiguration is r equired only f or M V/HV networks w here
the voltage is measured using PT's. This option allows you to accurately configure
the k nown transformation r atio i n b oth magnitude a nd p hase, o ver a r ange o f
measuring c ircuit impedances. T he v oltage t ransformer is in tended t o p resent a
negligible l oad to t he s upply b eing m easured. T he l ow s econdary v oltage al lows
protective r elay eq uipment and m easuring in struments t o be o perated at lo wer
voltages.
 For M V/HV N etworks (Vol tage M easurements by P T's) s et t he c orrect
Primary & Secondary Ratio (with / ) – according t o the PT
Manufacturer's Specifications & not just the Ratio:
If the PT Ratio is inapplicable, then set your values to read:
Primary = Secondary = Nominal
 The ratio for LV Networks is based on the same concept & specifications -
Set t he Primary & Secondary Ratio (with / ) (a ccording t o the PT
Manufacturer's Specifications & not just the Ratio):
If the PT Ratio is inapplicable, then set your values to read:
Primary = Secondary = Nominal
 To apply your changes to review them
SEE ALSO
 About Voltage & Frequency
 Power Configuration
 Smooth Filtering
 Voltage Polarity
 Define Nominal Values
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Elspec G4420 Specifications

General

Brand	Elspec
Model	G4420
Category	Measuring Instruments
Language	English