STP-301/451 Series Instruction Manual
6-7
Installation
6.2 Precautions before Installation
6.2.1 Operating Environment
Install the STP control unit in a place meeting the following requirements:
Ambient Temperature
0 to 40 °C
Ambient Relative Humidity
30 to 95% (no dew condensing)
Environment z A place free of exposure to direct sunlight.
z A place free of high humidity.
z A place free of dust.
z A place free of salty air.
z A place free of dripping water.
z A place free of explosive or inflammable gas.
z A place free of corrosive gas.
z A place free of radiation.
z A place free of strong magnetic and electric fields.
z A place free of excessive vibration.
z A place free of a source of electric noise.
Installation Condition
z Install the STP control unit horizontally (within +/-10°).
6.2.2 Insulation Test
Do not perform the insulation test (insulation resistance test and withstand voltage test) to
the STP control unit.
When performing the insulation test to your equipment, turn "OFF" the STP control unit so
that the test voltage is not applied to the STP control unit.
◇ The varistor for the power supply line protection is installed to the STP control unit.
DO NOT perform the insulation test with the varistor installed. Doing so may result
in product damage.
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