.'
,
..
_1
.._..__._
~.
.
.
.
.
.
.
..
.
,
,
.
".-*..
.._.,.
..
I
....
23.
INSPECTION AND MAINTENANCE
0
hurring
points
and
Instruments
Item
Line
voltage V1
Input
current
Il
Input
power P1
Input
power
factor
Pf,
output
votlage VZ
output
current
12
output
power Pz
output
factor
Pfz
power
Converter
Output
Across
R
and
S,
S
voltmeter and
T,
and
T
and
R.
Moving-iron
type
170 to 253V
50/60Hz
(323
to
506'4
Line current at
R,
ammeter
S.
and
T
Moving4ron
type
On
R'
s'
and
T'
and
pl
=
Wll
+
W,2
+
W13 (three wanmeter
type
across
R
and
S.
S
and
T,
method)
wattmeter
and
T
and
R
single-phase
To
be
calculated using the formula indicated below, from the line
voltage,
input Current
and input power.
raled
current.
Dlflerence
behveen
~haser
should
be
10%
or
less
On
U,
V, and W.
single-phase
and across
U
and
P?
=
We1
+
WZ
Electrodynamic
type
V,VandW
(two
wattmeter method (or three wattmeter
wattmeter
method))
To
be
calculated using the formula indicated below, from
the
line voltage, input current
and input power in the same manner as calculatlng input power factor.
Pfz=+xloo% P
PX
12
Across
P(+)
and
N
Unit LED display lights
1.35
x
v1
Max.
380
VDC (7") during reomeration
-
101
-
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