Chapter 8 Maintenance
77
M
D O
GND
F
( - )
( + )
U
V
W
T
S
R
A
A
A
V
V
V
W
W
V
V
V
A
A
A
W
W
V
Figure 8-1 The recommended connection
Table 8-3
The insturction for the electrical measurement of the main circuit
Item
Input(Power)
DC
Middle stage
Output
(
Motor
)
D0
Wave
Voltage
Cu
rren
t
Measuring
instrument
voltmeter ammeter
Wattm-
eter
DC
voltmeter
Voltmeter ammeter wattmeter
voltmeter
Instrument
type
Moving
coil
Electro-
magne-
tic
Dynamo
-electric
Magnetoelec
-tric
rectifier
electrom
agnetic
Dynamoel-
ectric
Agnetoele-
ctric
Measured
parameter
Fundame-
ntal wave
effective
value
total
root
mean
square
total
effective
power
DC voltage
Fundament
al wave
effective
value
total
root
mean
square
total
effective
power
DC Voltage
In the case of serious power supply asymmetry or three-phase current imbalance, it is
suggested the three-wattmeter method be used to measure the power.
As the electric insulation test and the dielectric strength test have been done for the
product before it leaves the factory, the users don’t have to do such tests again.
Moreover, such tests will reduce the insulation and voltage withstand performance of
the product. If such tests are conducted inappropriately, product elements may even be
damaged. If such tests have to be done really, it is suggested they be conducted by the
skilled technicians.
If the main circuit voltage withstand test is to be done, the withstand voltage tester with
In
pu
t po
wer
s
up
ply
Summary of Contents for AS600M Series
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