IAI America PSEP - Manual (Page 32)

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1.5 Installation Environment
This product is capable for use in the environment of pollution degree 2 *1 or equivalent.
*1 Pollution Degree 2: Environment that may cause non-conductive pollution or transient
conductive pollution by frost (IEC60664-1)
Do not use this product in the following environment.
x Location where the surrounding air temperature exceeds the range of 0 to 40qC
x Location where condensation occurs due to abrupt temperature changes
x Relative humidity less than 10%RH or greater than 85%RH
x Location exposed to corrosive gases or combustible gases
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x Location subject to direct vibration or impact
x Location exposed to direct sunlight
x Location where the product may come in contact with water, oil or chemical droplets
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x Location subject to electrostatic noise
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x Location with the mains or power lines passing nearby
For Dust-proof type (Equivalent to IP53)
The protection structure level is enhanced to IP53 with the installation of the dust-proof cover (option).
“5” in IP53 stands
for the structure Where the amount of dust which can affect the normal operation and
safety, can not enter the unit.
“3” in IP53 stands
for the structure Where normal operation and safety is not affected even with the
precipitation from above.