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Sharp R-7A53

Sharp R-7A53
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R-7A53
TEST PROCEDURES (CONT’D)
PROCEDURE
LETTER COMPONENT TEST
(Tl
“CI
(T2
OC)
Heat
up
for
1
min.
52
sec.
MICROWAVE OUTPUT POWER
(IEC-705-1988)
(RD82AOZU)
The
following
test
procedure
should
be
carried
out
with
the
microwave
oven
in
a
fully
assembled
condition
(outer
case
fitted).
Microwave
output
power
from
the
magnetron
can be
measured
by
way
of
IEC
705,
i.e.
it
can be
measured
by
using
water
load
how
much
it
can be
absorbed
by
the
water
load.
To
measure
the
microwave
output
power
in
the
microwave
oven,
the
relation
of
cal-
orie
and
watt
is used.
When
P(W)
heating
works
for
t(second),
approximately
P
x
t/4.1
87
calorie
.
is
generated.
On
the
other
hand,
if
the
temperature
of
the
water
with
V(ml)
rises
AT
(“C)
during
this
microwave
heating
period,
the
calorie
of
the
water
is V
x
AT.
The
formular
is
as
follows;
Pxt/4,187=VxAT
P(W)=4,187xVxAT/t
Our
condition
for
the
water
load
is
as
follows:
Room
temperature
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
around
20°C
Power
supply
Voltage
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
240
volts
Water
load
.
.
.
.
1000
g
Initial
temperature
.
10
+
2°C
Heating
time
.
.
.
49
sec.
P=85xAT
Measuring
condition:
1.
Container
The
water
container
must
be
a
cylindrical
borosilicate
glass
vessel
having
a
maximum
material
thickness
of
3
mm
and
an
outside
diameter
of
approximately
190
mm.
2.
Temperature
of
the
oven
and
vessel
The
oven
and
the
empty
vessel
are
at
ambient
temperature
prior
to
the
start
of
the
fest.
3.
Temperature
of
the
water
The
initial
temperature
of
the
water
is
(10
+
2)X
4.
Select
the
initial
and
final
water
temperature
so
that
the
maximum
difference
between
the
final
water
temperature
and
the
ambient
temperature
is 5°C.
5.
Select
stirring
devices
and
measuring
instruments
in
order
to
minimize
addition
or
removal
of
heat.
6.
The
graduation
of
the
thermometer
must
be
scaled
by
O.l”C
at
minimum
and
an
accurate
thermometer.
7.
The
water
load
must
be
(1000
f
5) g.
8.
“t”
is
measured
while
the
microwave
generator
is
operating
at
full
power.
Magnetron
filament
heat-up
time
is
not
included.
NOTE:
The
operation
time
of
the
microwave
oven
is
“t
+
2”
sec.
2
sec. is
magnetron
filament
heat-up
time.
5

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