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QL 데이터시트(PDF) 12 Page - Panasonic Semiconductor

부품명 QL
상세설명  QL (AZ4) Micro Limit Switch
PDF  21 Pages
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제조업체  PANASONIC [Panasonic Semiconductor]
홈페이지  http://www.panasonic.com/industrial/
Logo PANASONIC - Panasonic Semiconductor

QL 데이터시트(HTML) 12 Page - Panasonic Semiconductor

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6
• EN60947-5-1
EN standard same as IEC947-5-1
• Utilization categories
The following examples express the
classification of switches by category
of use.
• Rated impulse withstand voltage
(Uimp)
The peak impulse current value
which enables the switch to resist
without insulation breakdown.
• Rated enclosed thermal current
(Ithe)
The current value that enables cur-
rent to flow without exceeding the
specified maximum temperature in
the recharging contact switch. If the
pins are made of brass, the maxi-
mum temperature limit is 65°C 149°F.
• Conditional short circuit current
The current the switch can resist
until the short circuit protection
device is activated.
• Short circuit protection device
A device that protects the switch
from short circuits through a circuit
break (breakers, fuses, etc.)
• Switching overvoltage
The surge momentarily generated
when a circuit is closed. Must be
lower than the Uimp value.
• Pollution degree
Expresses in levels the environment
in which the switch is used. The four
levels are shown below.
Limit switches come under contami-
nation level 3.
Glossary relating to the EN60947-5-1
• Rated operational voltage (Ue)
The maximum rated voltage for
switch operation. This must never
exceed the maximum ratings insula-
tion voltage (Ui).
• Rated operational current (Ie)
The maximum rated current for
switch operation.
• Rated insulation voltage (Ui)
The maximum rated current value
which guards the switch’s insulation
functions, forming the parameters for
the resistance values and the mount-
ing distance.
Current
type
Category
Contents
AC
AC-15
Controls electromagnetic
loads in excess of 72VA
(Volt Amperes.)
DC
DC-12
Controls resistance
loads and semiconductor
loads.
Pollution
degree
Contents
1
No contamination or, even if conta-
mination is present, only non-con-
ducting contamination is generated.
2
Normally, only non-conducting cont-
amination is generated, but there
remains the possibility of temporary
conducting contamination when the
circuit is formed.
3
Conducting contamination is gener-
ated, or else dry non-conducting
contamination is generated by cir-
cuits which can be anticipated.
4
Permanent conducting contamina-
tion is generated by dust, rain,
snow, and other conductors.
TECHNICAL INFORMATION



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