BA 9137 en 12/2015
1.2
Marking of the gear unit designed in accordance with Directive 2014/34/EU
Table 1:
ATEX identification for above-ground applications
Equipment
group
Equipment
category
Explosive
Atmosphere
Explosion
group
Temperature
class
Mark
II
3
Dust (D)
-
-
II
3 D 120 °C bck T
a
..
1)
1)
T
a min.
≤ T
a
≤ T
a max.
= permissible ambient temperature range in °C:
T
a min.
= minimum permissible ambient temperature
T
a max.
= maximum permissible ambient temperature
T
a
= symbol for ambient temperature
Note
The ignition protection type "b" is not available for gear units without electrical explosion hazard
monitoring device (e. g. temperature, oil level).
The rating plate on the gear unit indicates the marking for the applicable case of application.
1.2.1
Ambient temperature
The specifications of Directive2014/34/EU apply to the ambient temperature range of from
- 20 °C to + 40 °C. By adopting various suitable measures, the gear unit may be used in ambient
temperatures from - 40 °C to + 60 °C. However, the temperature range and the expanded temperature
range must generally be approved by Siemens and be specified in the order text.
In individual cases the permissible ambient temperature range specified on the rating plate always applies.
1.3
Measuring-surface sound pressure level
A measuring-surface sound pressure level during operation cannot be specified, as the gear unit is
operated without load during the test run on the Siemens test bench.
1.4
List of equipment
Note
All important accessory components are specified in the order specific equipment list including your
technical data.
