www.nord.com B1091-GB-3212 -13-
7. IE2-ATEX Motors for use in
Zone 21 and Zone 22
ATTENTION!
Section 7 of these operating instructions applies as a supplement for IE2-ATEX motors for Zone 21
and Zone 22 as per EN 60079-0 and DIN EN 60079-31. Please disregard Section 6 for these motors.
7.1 General information
The following information applies additionally or especially to motors in categories 2D and 3D!
The motors are suitable for use in Zone 21 (category 2D) or Zone 22 – non-conductive dusts (category 3D)
according to their designation.
Type addition: Zone 21: 2D e.g.: 80 L/4 2D TF
Zone 22: 3D e.g: 80 L/4 3D TF
The designation is as follows:
0102
II 2 D Ex tb IIIC T125°C Db for Category 2
(Zone 21)*
II 3 D Ex tc IIIB T125°C Dc for Category 3
(Zone 22, non-conducting dust)*
* the details of the surface temperature may deviate from 125°C and may be obtained from the name plate
If the motor is attached to a gear unit, the EX labelling of the gear unit must also be observed!
7.1.2 Impact test
As per 26.4.2 of EN 60079-0 (2009 version), motors for Category 3D are subjected to an impact test with 4J.
7.2 Safety information
The increased danger in areas with inflammable dust demands the strict observation of the general safety
and commissioning information. Explosive concentrations of dust may cause explosions if ignited by hot or
sparking objects. Such explosions may cause serious or fatal injuries to persons or severe material damage.
It is absolutely essential that the persons responsible for the use these motors and frequency inverters in
explosion hazard areas are trained in their correct use.
7.3 Commissioning information / Field of application
If the motors are required for use with frequency inverters, this must be stated in the order. The motors must
be protected against overheating with suitable monitoring equipment! The thickness of dust deposits must
not exceed 5 mm! The motors are designed for the voltage and frequency range B of EN 60034 Part 1.
Motors for use in Zone 21 and Zone 22, with labelling TF may be thermally monitored via the built-in PTC in
combination with a suitable triggering device as the sole protection.
Electrical equipment for use in areas with combustible dust comply with the standards DIN EN 60079-0,
EN 60079-31 and DIN EN 60034. The valid version of the standard can be seen from the EEC Declaration of
Conformity. The degree of explosion hazard determines the zone categorisation. The operator / employer is
responsible for the assignment of zones (RL 1999/92/EEC)
If the certification is supplemented with an "X" the special conditions in the EEC prototype certification and/or
the relevant documentation must be observed. The use of standard motors which are not certified for
explosion hazard areas in explosion hazard areas is prohibited.
The terminal box cover is covered on one side with a very thin film of grease. This grease film prevents the
seal from adhering to the frame of the terminal box and must not be removed. This grease film must also be
applied using a suitable grease, if the seal is replaced.
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