| General |
The construction
is similar to standard TEFV motors, but with special attention
to eliminate production of arcs, sparks or dangerous surface
temperatures. Air gap concentricity is rigidly inspected throughout
manufacture and the structure of the motor is impact tested.
They are either IP6X or IP5X protection depending on the Zone
and type of dust: |
European standard
motors (EN 50281)
|
Dust Hazard
|
Zone 21
|
Zone 22
|
|
Equip. category
|
Cat. 2
|
Cat. 3
|
|
Conductive dusts
|
IP6X
|
IP6
|
|
Non-conductive dusts
|
IP6X
|
IP5X
|
The specification takes into account of dust present in a
cloud in normal operation and a layer up to 5mm thick.
All motors comply with the requirements of ATEX Directive
(94/9/EC) |
|
| Temperature |
| An important
feature of the motor design is the limitation imposed on the
external surface temperature that can be attained under all
conditions. This range of motors is suitable for use in dust
either by cloud or layer with auto ignition temperature not
lower than 125°C. For dusts with other temperatures please
contact Brook Crompton. |
|
| Certification |
The motors are
certified by a European notified body who also grant the Quality
Assurance Notification to manufacture.
|
Certificate
Numbers
|
Frame Size
|
Certificate No.
|
| Category 2 |
|
| W-DF80 to 180 |
BAS00ATEX2205X |
| W-DF200 to 355L |
BAS00ATEX2217 |
|
|
| Category 3 |
|
| W-DF80 to 180 |
BAS00ATEX3206X |
| W-DF200 to 355L |
BAS00ATEX3218 |
|
| Dual Zones |
| Some Installations
may be subject to more than one type of hazard. The presence
of combustible dusts may occur with gases and vapors etc.
Under these circumstances, it is possible to supply motors
with certification for both Hazards. |
|
