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(APPENDIX 2)
TORQUE-OUTPUT FREQUENCY CURVES OF HITACHI 4 POLE
GENERAL-PURPOSE MOTORS
The
following
data
show
the
reference
values
of
torque
characteristics
of Hitachi
4 pole
motor
with
HFC-VWS3
series.
- Applicable
motor:
0.4 v 11 kW
eK
2o
oo
Torque
(%)
w
wa
Pe.)
Wo
N
an
0 5 10
20
30
40
50
60
70
80
90
100
110
120
Output
frequency
(Hz)
* Applicable
motor:
15%
22 kW
%)
pi N Lea]
o
Torque
(
I
i
|
l
i
=
|
)
!
t
4
f
$b
a
: VEENRE
NE PORAST:
50
60
70
80
90
100
110
120
Output
frequency
(Hz)
z2)
——
:
Continuous
working
torque
° - Applicable
motor:
30 a 37
kW
eee,
130+-—-—-
i
|
125
a
! a
Torque
(%)
=] o
©
1
|
|
i
|
|
i
]
|
i
|
|
!
a
i
hence
——b___
4
10
20
30
40
50
60
70
80
90
100
Output
frequency
(Hz)
Applicable
motor:
45 ~ 55 kW
130
ae
a
a
l
|
|
l
|
I
|
|
|
|
|
|
|
|
0510
20
30
40
50
60 65
Output
frequency
(Hz)
* Applicable
motor:
75 % 132
kW
V(4)
0510
20
30
40
50
60
Output
frequency
(Hz)
V/F
:
VFEF2-VC
50
-
144
iHz
50Hz
F(Hz)
—-—
:
Max.
torque
for
short
time
by adjusted
torque
boost
Max.
torque
is not
starting
torque
(shaft
locked
torque).
This
is generated
in condition
of slipping
speed.
- 109 -
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