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Contra-rotating axial flow fan ZWLP-SIGMA 900/P

Contra-rotating axial flow fan ZWLP-SIGMA 900/P is designed for independent/separate ventilation of underground mining excavations (e.g. in coal mines, cooper mines). Contra-rotating axial flow fan ZWLP-SIGMA 900/P is able to operate in forcing or exhaust ventilation system, as well as with auxiliary cooling or dedusting air-ducts (i.e. combined ventilation). ZWLP-SIGMA 900/P can be applied as set of two fans mounted in series or parallel in ventilation systems mentioned above.

Contra-rotating axial flow fan ZWLP-SIGMA 900/P can be supplied with voltage range version of 500 V or 500V/1000 V.

Contra-rotating axial flow fan ZWLP-SIGMA 900/P can be applied in underground mining methane and non-methane excavations, considered as level “a”, “b” and “c” area exposed to methane explosion hazard, as well as grade “A” and “B” of coal dust explosion hazard. Contra-rotating axial flow fan has been classified as Group I, category M2 due to its application in areas exposed to explosion hazard (according to directive 2014/34/UE).

SPECIFICATION Files to download
TECHNICAL CHARACTERISTICS
Nominal volumetric flow (Q) [m3/s] 6 (1st gear), 11 (2nd gear)
Nominal total pressure increase (P) [Pa] 1600 (1st gear), 6100 (2nd gear)
Max. total pressure increase (P) [Pa] 2550 - 200 (1st gear), 8500 - 500 (2nd gear)
Capacity of fan [m3/s] 3 - 8 (1st gear), 6,5 - 16 (2nd gear)
Fan internal diameter [mm] 900
Fan efficiency [%] 56 (2nd gear)
Increase of forcing air temperature [°C] 1 - 2
Rated voltage [V] 500 or 500/1000

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