4
Explosion proof stationary fan
WPA-P-N/Ex 07.02.2017
PN-EN 14986:2009
–
“Designing of fans used in areas of explosion risk”.
ISO 14694:2003+AMD1:2010
–
“Industrial fans – specifications for balance quality
and vibration levels”.
PN-ISO 14695:2008
–
“Industrial fans – Method of measurement of fan vibration”.
2.
Application
WPA-P-N/Ex explosion proof portable fans
are intended for use in areas of explosion risk,
where explosive atmosphere, {i.e. mixture of flammable substances in form of gas and vapour
with the air, whereby (after ignition), the burning mass would expand within the whole non-burning
mixture}
can occur.
Increased fan pressure of the device makes possible to apply it in a system cooperating with
local exhausts, filtering units, as well as in a ventilation system of significant flow resistances.
The fans can work within temperature range -20
C up to +40
C.
They
are meant for forwarding the dry air of dustiness not exceeding 0,3 g/m³, without viscous
impurities, aggressive compounds and of maximum tempe60
C.
According to the ATEX 2014/34/EC Directive and the standard PN-EN 13463-1 the appliance
provides level of protection:
HIGH
as appliance classified in
group II
,
category 2
and designed for application in areas where
explosive
atmospheres are possible to occur
. It can be applied in
zones
1
,
2
(
G
).
The appliance is marked on the Ex classification board:
II 2 G c Ex e II T3
Marking of the operational conditions of the device
–
group/category/hazard/temperature class.
marking for explosion proof properties of the device,
group II
– the device is designed for work as on-ground application, in places where explosive
atmospheres occur,
but this cannot be methane risk (fire-damp)
, neither carbon dust,
category 2
– the device is designed for application in areas where explosive atmospheres
are
likely to occur
,
gas hazard G
,
“
c
” – refers the constructional protection,
Ex
– mark of the electrical device – constructed and tested according to the European standards
for work in areas of explosion risk,
execution
“
e
” – type of construction of the motor (a motor of increased safety)
gas explosion
group II
– occurring in plants on ground – the fans are constructed according
to the PN-EN 14986:2009, whereby they can be applied for gas in explosion group
IIA
,
IIB
and
hydrogen
,
temperature class T3
– the temperature of any part of the device should not exceed
200ºC
;
the device can be used safely in explosive atmospheres belonging to classes
T3
,
T2
,
T1
.
