Siemens 7XT71 Series, Manual

Page: 19 / 48

7XT7100-0*A00/DD English
C53000-B119U-C128-1 19
Climatic Stress Tests
Temperature
Standard: IEC 60255-6
- recommended temperature during service
Rated auxiliary v15 % -5 °C to +40 °C
Rated auxiliary v10 % -5 °C to +55 °C
- permissible temperature during storage -25 °C to +55 °C
- permissible temperature during transport -25 °C to +70 °C
Storage and transport with standard works packaging!
Humidity
- Permissible humidity mean value per year
≤
75 %
relative humidity;
on 56 days per year 95 % relative
humidity;
condensation not permissible!
All units shall be installed such that they are not subjected to direct sunlight, nor to large
temperature fluctuations which may give rise to condensation.
Service Conditions
The relay is designed for use in industrial environment, for installation in standard relay
rooms and compartments so that with proper installation electro-magnetic compatibility
(EMC) is ensured. The following should also be heeded:
‰
All contactors and relays which operate in the same cubicle or on the same relay panel
as the digital protection equipment should, as a rule, be fitted with suitable spike
quenching elements.
‰
7XT71 and 7UM515 or 7UM62 should be mounted in the same cubicle, if possible, or at
least close to each other.
‰
connection lines between 7XT71 and 7UM515 or 7UM62 must be shielded and their
length should not exceed 2 m.
‰
It is not permissible to withdraw or insert individual modules under voltage. In the with
drawn condition, some components are electrostatically endangered; during handling the
standards for electrostatically endangered components must be observed. The modules
are not endangered when plugged in.
Warning !
The relay is not designed for use in residential, commercial or light-
industrial environment as defined in EN 50081.