flows as leakage current over conducting housing parts, resulting in the risks of
sparking at transfer points and, if explosive materials are present, explosions.
Material aging
The time of action and penetration of explosive materials depend on the applica-
tion. It depends on the ageing degree of the seals, on the mechanical attach-
ment of the motor, the properties of the explosive materials and the average
temperature occurring during the operating time as a result of the load cycles.
Impermeability
Due to unavoidable temperature fluctuations as well as due to the deterioration
of gaskets, the housing is not leak proof. Hence, explosive gases that occur with-
in the equipment during a fault can penetrate into the motor. The design and
checking of the impermeability are carried out according to the degree of pro-
tection IP 65 (EN 60034-5:2001). The maximum temperature of parts within the
motor can reach 155 °C during normal operation at maximum ambient tempera-
ture.
Temperature monitoring
The failure of the single-channel temperature monitor in the device system may
occur, as the result of an error, and might not be detected, even if the motor is
operated within the normal temperature range and load cycle.
1.7 Labeling
1.7.1 CE-label acc. to ATEX
The type plate contains
●
Details about classification of the motor according to ATEX Directive
2014/34/EU
●
Technical data
of the motor.
Before installing the motor, make sure that it is marked accordingly
and has a sufficiently high protection class for your application.
ATEX label and significance:
MSK Motors Operation For Potentially
Explosive Areas
7/27
Operating instructions
R911323850_Edition 05 Bosch Rexroth AG
Содержание Rexroth MSK030-NSNN Series
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