3. Installation
3.1 Prerequisites for the location of use
3. Installation
3.1 Prerequisites for the location of use
The XH-303 must be used only in locations for which the XH-303 is approved.
A 24 VDC supply voltage must be ensured as per the specifications.
See also
Label on the → "Nameplate", page 21
as well as the specifications in the appendix → Section "Technical data", page 82
3.1.1 Installation position
The following must be taken into account when selecting the installation position:
l
The controls and connectors on the XH device's service side must remain access-
ible even after the device has been installed.
3.1.1.1 Temperatures
Make sure that the XH-303 does not overheat.
Do not expose the XH-303 to direct sunlight or other sources of heat.
The minimum clearance to components emitting heat, such as transformers under
heavy loads, is 15 cm.
CAUTION
UV LIGHT
Plastics will become brittle when exposed to UV light. This artificial
aging will reduce the XH-303 unit's lifespan. Protect the XH-303 unit
from direct sunlight and other sources of UV radiation.
The environmental ambient conditions for operation must not exceed the specified
values:
Ambient climatic conditions
Air pressure (in operation)
795 - 1080 hPa
Max. 2000 m above sea level
Temperature
Operation
ϑ: ± 0 – +50 °C (+32 – +122 °F)
Mounting position
XH-303-70-A10-A00-2B, XH-303-10-A10-A00-2B
α ≦ ± 45°, T ≦ 50 °C (122 °F)
XH-303-15-A10-A00-2B
α ≦ ± 10°, T ≦ 50 °C (122 °F)
α ≦ ± 45°, T ≦ 45 °C (113 °F)
Inclination from vertical:
⍺
≦ ± 45° at operating temperature ≦
45°C (113°F) possible (if using natural convection)
XH-303
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