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8 8 . .
S S a a f f e e t t y y
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Destination : All over the world
Destination : All over the world
Applicable standards : UL60950/C-UL/EN60950
Applicable standards : UL60950/C-UL/EN60950
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Unit class : Class I units (the units protected against electric shocks
Unit class : Class I units (the units protected against electric shocks by protective
equipped with 3-core power cords)
equipped with 3-core power cords)
Ratings : AC100 - 240V 50/60Hz 1.3-0.7A
Ratings : AC100 - 240V 50/60Hz 1.3-0.7A
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8 8 .1 .1
In Insu
sula lati tion R
on Res
esis ista tanc
An insulation resistance should be measured under the conditions specified below, in order to
An insulation resistance should be measured under
that the requirements of the judgment standard are met.
that the requirements of the judgment standard are met.
1) Measuring conditions
1) Measuring conditions
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Measuring instrument : 500V DC
Measuring instrument : 500V DC MEGOHM Meter
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T T esting point : Between the
esting point : Between the power circuit block and the
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Measured value readout : A test voltage should be applied for one minute and the resistance
Measured value readout : A test voltage should be applied for one minute and the resistance
2) Judgment standard:
2) Judgment standard:
The resistance of the insulation between the power terminal and the ground contact is more
The resistance of the insulation between the power terminal and the ground contact is more
than 10M ohms while withstanding a voltage of 500Vdc.
than 10M ohms while withstanding a voltage of 500Vdc.
8 8 .2 .2
Di
Diele
elect ctri ric c St
Stre reng
To confirm the freedom from insulation breakdown, testing should be carried out under the conditions
To confirm the freedom from insulation breakdown, testing should be carried out under the conditions
specified below.
specified below.
1) Measuring conditions
1) Measuring conditions
Measuring instrument: Dielectric strength tester (The specified voltage should be
Measuring instrumen
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state that a current of 10mA is carried.)
state that a current of 10mA is carried.)
T T esting point: Between the electrical
esting point: Between the electrical circuit block and the
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connector)
connector)
Note : The electrical circuit block should mean the power input block (primary side). Testin
Note : The electrical circuit block should mean
be carried out under the condition that both poles of the power plug are short-circuited. (Where
be carried out under the condition that both poles of the power plug are short-circuited. (Where
a 3-core cord is used, the two poles
a 3-core cord is used, the two poles other than the
2) Judgment standard
2) Judgment standard
There is no breakdown of the insulators or short circuits when applying an alternating potential of
There is no breakdown of the insulators or short circuits when applying an alternating potential of
1000Va
1000Vac for a durat
c for a duration of 1(one) mi
between the metallic chassis and the input power supply active and neutral terminals connected
between the metallic chassis and the input power supply active and neutral terminals connected
together.
together.
nce T
e Tes
est t
MEGOHM Meter
power circuit block and the exposed metallic block
(D-SUB connector)
(D-SUB connector)
value should be read out thereafter.
value should be read out thereafter.
ngth th T T es
est t
t: Dielectric strength tester (The specified voltage should be maintained in the
ion of 1(one) minute or 1500Va
nute or 1500Vac for a dura
the conditions specified below, in order to confirm
exposed metallic block
circuit block and the exposed metallic block
exposed metallic block (D-SUB
the power input block (primary side). Testing should
other than theground
ground terminal should be short-circuited.)
c for a duration of 2(two) second at
5-20 0
5-2
by protectiveground
grounding, or those
maintained in the
(D-SUB
terminal should be short-circuited.)
tion of 2(two) second at 50Hz
ing, or those
confirm
g should
50Hz
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