Operating instructions B-Series
Version 2.4, En Page 43 of 81 21-10-2005
7.2 Electric motors
Overview of motors useable in ATEX zones
Environment
Environment
T1 T2 T3 T4
Gas 3
-nA-II-T3
-nA-II-T3
-nA-II-T3
-d(e)-T4
Gas 2
-e-II-T3
-e-II-T3
-e-II-T3
-d(e)-T4
Dust 3
C
C
C
II 3D T125
C
Dust 2
C
°C
°C
°C
Extra point(s) for attention with ATEX pumps.
K11.
B6.
B7.
Choose the correct E-motor (only with units). ∗
∗∗
∗
•
Choose the correct power and number of revolutions, etc. The motor may not be
too oversized. The motor must cut out when the pump requests more power as a
result of a broken bearing, rotor malfunction, etc.
• EX-motor, cat. 2
Protect E-motor against overloading. ∗
∗∗
∗
• In the case of overloading the motor may not become too hot.
This is the case with a Category 2 motor because the motor switches off in time.
Protection of supplied power.
∗
∗∗
∗
With an Ex-pump (unit) supplied by BBA Pompen these aspects are ensured for the application
indicated by the client with the associated indicated medium.
Dangers relating to
the software:
It is the responsibility of the employer to ensure that the
safety measures (such as the protection of supplied power)
and the resulting action (such as the stoppage of the pump)
are appropriately included in the safety circuit.
Before connecting an electric motor to the mains, consult the relative
prevailing local instructions from the electricity producer and standard EN
60204-1.
Have the connection of electric motors take place by personnel qualified for
this.
Before the pump is electrically connected it must be filled with liquid. The dry
running of the pump must be avoided at all times!
Work may only take place on the installation when all electrical power has
been shut off. The installation must be protected against inadvertent switching
on.
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