DV-EX Roof Fans

Explosion-proof centrifugal roof fan with vertical discharge

Certified according to ATEX 2014/34/EU
Sizes 315 up to 500 inclusive tilting device

Impeller diameter Ø

Voltage

DV-EX 315D4 Roof fan ATEX#237929

Frequency: 50 Hz

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Safety first

DV-EX roof fans are designed for challenging environments where explosive atmospheres can occur. Which is why they are tested according to ATEX directive 2014/34/EU – to ensure they’ll perform as intended after installation.

Relability

The casing made out of seawater resistant aluminium with an inside galvanised steel frame is hard-wearing. This makes the fan also suitable for coastal applications.

The combination of casing and motor construction ensures to minimize the need for maintenance of the fans and allows long continuous operation.

Performance

DV-EX could be used for zone 1 and zone 2; Field of application for gases of groups IIA, IIB and also hydrogen, temperature class T1, T2 and T3.

Tech specs

Features

Construction

The casing casing is manufactured from sea water resistant aluminium. The base frame is manufactured from galvanised steel and the inlet cone from copper. A powder coated bird guard manufactured from galvanised steel is integrated in the casing.

Impeller

The DV-EX fans use radial impeller with backward curved blades. These are made out of alluminum, dynamically balanced and paired with corresponding external rotor motors.

Motor

Voltage controllable, explosion proof, 3-phase external rotor motor. Separate “Ex-e” connection box available as an accessory.

Motor protection

Integrated PTC thermistors, to be connected to a motor protection device.

Control

Speed controllable by a 5-step transformer

Installation

The DVS-EX are for outside installation.

Technical Data

Article name

DV-EX 315D4 Roof fan ATEX

Article number

#237929

400V 3~ 50Hz
Nominal data
Voltage (nominal)	400	V
Frequency	50	Hz
Phases	3~
Input power	120	W
Input power kW	0.12	kW
Input current	0.23	A
Impeller speed	1,340	rpm
Air flow	max 411	L/s
Temperature of transported air	max 40	°C
Max temperature of transported air, when speed controlled	40	°C
Protection/Classification
Enclosure class, motor	IP44
Insulation class	F
Explosion proof marking	II 2G Ex h IIB+H2 T3 Gb
Certificate	TPS 20 ATEX 085751 0007 X
Data according to ErP
ErP ready	Not ErP relevant
Ambient and duct temperature
Ambient and duct temperature	-20 to 40	°C
Dimensions and weights
Weight	18	kg
Others
Motor type	AC

Performance

Dimensions


	□A	B	□C	øD	□E	F	øI	□K	□L	M
DVEX 315	560	382	470	192	330	146	12	406	304	330

Specification

Roof fan, vertical discharge. Explosion proof version. Casing made of seawater resistant aluminium.Base frame made of galvanised steel sheet, copper inlet cone.With tilting device FTG. Free-running, backward curved centrifugal impeller made of aluminium. Balancing quality G 6.3, dynamically balanced acc. to DIN ISO 1940-1.Voltage controllable external rotor motor, vibration-free mounted, the motor is placed inside the air flow for cooling. PTC. Supply cable, led out.For the extraction of potentially explosive atmosphere of zone 1, category 2G and zone 2, category 3G.Field of application for gases of groups IIA, IIB and hydrogen.Clasification: II 2G Ex h IIB+H2 T3 Gb.Tested acc. to ATEX Directive 2014/34/EU.For outdoor installation. Vertical installation position.