Climatic Stress Tests; Service Conditions - Siemens SIPROTEC 7RW80 Manual

4.1.7

Climatic Stress Tests

Temperatures
Standards:
Type test (in acc. with IEC 60068-2-1 and -2, Test
Bd for 16 h)
Permissible temporary operating temperature
(tested for 96 h)
Recommended for permanent operation (in acc.
with IEC 60255-6)
Limit temperatures for storage
Limit temperatures for transport
Storage and transport with factory packaging
Humidity
Permissible humidity
Siemens recommends that all devices be installed such that they are not exposed to direct sunlight, nor
subject to large fluctuations in temperature that may cause condensation to occur.
4.1.8

Service Conditions

The protective device is designed for use in an industrial environment and an electrical utility environment.
Proper installation procedures should be followed to ensure electromagnetic compatibility (EMC).
In addition, the following is recommended:
• All contacts and relays that operate in the same cubicle, cabinet, or relay panel as the numerical protective
device should, as a rule, be equipped with suitable surge suppression components.
• For substations with operating voltages of 100 kV and above, all external cables should be shielded with a
conductive shield grounded at both ends. For substations with lower operating voltages, no special mea-
sures are normally required.
• Do not withdraw or insert individual modules or boards while the protective device is energized. In with-
drawn condition, some components are electrostatically endangered; during handling the ESD standards
(for Electrostatic Sensitive Devices) must be observed. They are not endangered when inserted into the
case.
SIPROTEC, 7RW80, Manual
C53000-G1140-C233-1, Release date 10.2010
IEC 60255-6
–25 °C to +85 °C or –13 °F to +185 °F
–20 °C to +70 °C or –4 °F to +158 °F (clearness of the
display may be impaired from +55 °C or +131 °F)
–5 °C to +55 °C or +23 °F to +131 °F
–25 °C to +55 °C or –13 °F to +131 °F
–25 °C to +70 °C or –13 °F to +158 °F
Mean value per year ≤ 75 % relative humidity;
on 56 days of the year up to 93 % relative humidity; con-
densation must be avoided!
Technical Data
4.1 General Device Data
183