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INTRODUCTION
An explosion-proof, and in particular a flameproof motor, is one that is inherently safe when
working in potentially explosive atmospheres.
This means that its construction and assembly are designed so that ingress of explosive gases
or dusts is rendered harmless for the environment.
In the event of accidental ignition, provoking an explosion inside the motor housing, the motor
shell and brackets are strong enough to resist the internal pressure created by this explosion.
Moreover, assembly joints and shaft clearance must be long enough and offer minimum play, so
that hot gases or dusts resulting from an explosion will be cooled sufficiently to create no
possibility of an explosion outside the motor.
The outside temperature of the motor enclosure must also be kept well below the flash point of
the gases or dusts present in the hazardous atmosphere, both in normal and abnormal working
conditions.
Finally, it is the manufacturer's concern that components inside the motor should be able to
withstand an occasional explosion without being adversely affected.
As explosion proof motors are constructed with special materials and technologies that comply
with the legal regulations concerning potentially explosive atmospheres, a wrong connection or a
minor modification of the motor destroys the compliance with security regulations. The rules
concerning explosion proof apparatus must be observed unconditionally. Note that our motors
are approved for a specific group of hazardous areas and temperature classes.
If you are unclear about any of the information's in this documentation, of if you require further
information, please contact Elnor Motors.
GENERAL CHARACTERISTICS
Flame proof induction motor for explosive atmosphere.
Motor
Motor Type
prefix
BA
3xy***
BAX
2xy***
or
1xy***
BAV
1xy***H2
73xy***
BA – naturally cooled explosion proof motor;
BAV – fan cooled explosion proof motor;
BAX - explosion proof motor cooled by application;
xy – length of the stator stack, if length less than 100 mm;
TR – three phase motor;
*** -
C – single phase motor with start capacitor;
-
E – single phase motor with permanent run-capacitor;
-
CP – single phase motors with start and permanent-run capacitor;
-
Outside dimensions:
Since our motors are custom made, the outside dimensions, the motor foot/plate, the shaft and
the motor face are particular to each customer, please refer to the general drawing attached to
your offer.
Ce document doit être transmis et utilisé inchangé et dans son intégralité. L'utilisateur est responsable de vérifier soigneusement
la validité de ce document concernant son produit.
page 64 de 80
ELNOR MOTORS NV
Max. Voltage
(VAC)
690
400
415
415
690
Instruction Manual Induction Motors 2021-05-11revision 21
Frequency (Hz)
Max. power (kW)
50,60 or 50/60
50,60 or 50/60
50,60 or 50/60
50,60 or 50/60
50,60 or 50/60
2,2
0,35
1
1
0,55
2 / 10
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