DVV-EX Explosion proof roof fans

Product catalog summary

Overview: The DVV-EX Roof Fan is designed for ventilating explosion hazardous areas by exhausting potentially explosive atmospheres. It features backward-curved impellers and an IEC motor with flameproof enclosure, suitable for zones 1 and 2, and classified under category 2G.

Specifications: The fan casing is made from seawater-resistant aluminum, and the base frame is hot-dip galvanized steel with a copper inlet cone. It is suitable for gases of groups A and B and temperature classes T1 to T4. The fan is marked as II 2G c IIB T4, with additional configurations available for extended temperature and gas ranges.

Safety Features: The fan includes built-in thermistors (PTC) for motor overheating protection, with an option for connection to a motor protection relay. It supports speed control via a frequency converter and offers a two-speed motor on request.

Performance: The fan models vary in input power, current, maximum airflow, and sound pressure levels. The technical data includes motor insulation class F, IP55, and S1 duty.

Dimensions: Detailed dimensions are provided for different models, including measurements for installation and mounting.

Accessories: Available accessories include silencers, inflow boxes, automatic shutters, flexible connections, and flanges. These can be requested for specific installation needs.

Compliance: All fans comply with the ATEX guideline 94/9/EG and are certified for use in EC countries. They are approved for transporting substances in explosion groups IIA, IIB, and partially IIC.

Ordering Information: The ordering key includes details on impeller type, polarity, motor type, and size. Additional accessories are available upon request.

Catalog excerpts

Open the catalog to page 1

Roof Fan for normal ventilation and smoke/heat extract Roof fans DVV-Ex are designed to exhaust potentially explosive inflammables such as gases and steam) from explosion hazardous areas. The DVV-Ex fans have impel- ers with backward-curved blades and IEC motor in explosion protection casing is manufactured from seawa- ter-resistant aluminium and the base frame from hot dip galvanised steel, with a copper inlet cone. Suitable for exhaust from zones 1 or 2, field of application II, for gases of groups A T4. The fans are classified to category 2G. Marking of the serial equipped sion protection...

Open the catalog to page 2

Technical data Model 3x400V, 50Hz Sound pressure level at 4/10 m [dB(A)] Motor insulation class F, IP55, S1 du

Open the catalog to page 3

Wiring diagram (only direct start possible)

Open the catalog to page 4

DVV-EX installation examples * Note: Accessorie available on request Accessories Details of following and electrical accessories are on-line available. FDG-EX flat roof socket SSG-EX socket silencer HSDV silencer to outlet ASSV-EX flexible connection ASFV flange VKG-EX automatic shutter SSGE-EX socket silencer * Note: Accessorie available on request FDGE-EX roof socket Impeller type (XS, XM, XL ) Polarity (4, 6, 8, rsp. two speed motor) D = three phase motor Impeller size Fan type

Open the catalog to page 5