NORD Drivesystems B1091 - Manual (Page 14)

-14- B1091-GB-4613 www.nord.com
7. Motors for use in Zone 21 and Zone 22
according to EN 60079-0 and IEC 60079
NOTICE!
Section 7 of these operating instructions applies as a supplement for explosion protected electric
motors for Zone 21 and Zone 22 according to EN 60079 and IEC 60079. Please disregard Section 6 for
these motors.
7.1 General information
The following information applies additionally or especially to motors for Zone 21 and Zone 22!
Motors which comply with EN 60079 and IEC 60079 are suitable according to their labelling for use in Zone
21 or Zone 22 - non-conductive dust.
Type suffix according to Zone 21: 2D e.g.:……….. ........................... 80 L/4 2D TF
EN 60079 : Zone 22: 3D e.g: ......................................... 80 L/4 3D TF
Type suffix according to Zone 21: EPL Db e.g:……………………….80 L/4 IDB TF
IEC 60079: Zone 22: EPL Dc e.g.:………………………80L/4 IDC TF
Labelling according
to
EN 60079 and
94/9 EC
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)*
Labelling according
to
IEC 60079 Ex tb IIIC T125°C Db for Category 2 *
Ex tc IIIB T125°C Dc for Category 3
(non-conducting dust)*
* the details of the surface temperature may deviate from 125°C and can be obtained from the type 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
According to 26.4.2 of EN 60079-0:2009 and IEC 60079-0:2007 motors for Category 2D and 3D are
subjected to an impact test with 4J.
7.2 Safety information
The increased danger in areas with combustible dust requires that the general safety and commissioning
instructions are strictly complied with. 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.