Siemens SIMOTICS GP Operating Instructions Manual page 61

Applicable Standards
On the nameplate you will find the prescriptions and standards
taken as the basis for sizing and testing this engine and are based on the
NEMA MG-1 standard.
Degree of protection
The machine has a type of protection as stamped on the rating
plate, and can be installed in dusty or humid environments
Environmental Conditions
Limit values for the standard version
Relative humidity for ambient temperature T
Ambient temperature
Installation altitude
Air with normal oxygen content, usually
If the environmental conditions are different from the details listed
here, then the values on the rating plate will apply. The motor is suitable for
tropical climates.
Degree of protection:
The motor has a type of protection as stamped on the rating plate
and can be installed in dusty or humid environments.
Motors intended for use in Zone 21 have IP 65, dusty environments
such as grinders, silos, animal feed plants, and malt houses, as well as in
certain areas of the chemical industry.
NOTICE
These low voltage explosion motors approved motors are designed for
systems and industrial plants.
Explosion-proof protection type (Ex d).
These motors are built for explosion proof (Ex d) in accordance with
IEC / EN 60079-1. These can also be operated in hazardous areas zones 1
and 2 in accordance with the directive IEC / EN 60079-1.
Unrestricted
40 °C
amb
61
max. 55 %
-20 °C a +40 °C
≤ 1000 m
21% (V/V)
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