NETZSCH NM125BY B.1 Series - Service Life; Special Operating Conditions (X-Labelling); Standards

Motors – Operating and Assembly Instructions
48 B 1091 en-3118
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3.5.2 Standards
ГОСТ Standard IEC Standard
ГОСТ 31610.0-2014 IEC 60079-0:2011
ГОСТ Р МЭК 60079-31-2013 IEC 60079-31:2013
ГОСТ Р МЭК 60079-7-2012 IEC 60079-7:2006
ГОСТ 31610.15-2014 IEC 60079-15:2010
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3.5.3 Service life
In addition to the service intervals which are stated in the operating and maintenance instructions, it
should be noted that the use of motors which are more than 30 years old is not permitted.
The year of manufacture of the motor is stated on the type plate.
WARNING
Danger to persons
The motors must be disconnected from the mains before opening the terminal box.
WARNING
Explosion hazard
Opening the terminal box in an explosive atmosphere is prohibited.
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3.5.4 Special operating conditions (X-labelling)
Permissible ambient temperature range
For all motors with ignition protection type tb or tc, the permissible ambient temperature range is -
20°C...+40°C. For motors for operation in Zones 21 and 22, an extended ambient temperature range
from -20°C...+60°C is permissible. In this case, the rated power must be reduced to 72 % of the value
stated in the catalogue.
If the maximum ambient temperature is between +40 °C and +60 °C, the power output should be
inversely linearly interpolated between 100 % and 72 %. In this case thermal protection of the motor by
means of a thermistor sensor is essential. The motor connection cables and the cable glands must be
suitable for temperatures of at least 80 °C.
The extended ambient temperature range does not apply for optional attachments such as a brake
and/or external fan. Contact the manufacturer in case of doubt with regard to permissibility!
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