ERF

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Roof fans ERF are manufactured in accordance with both international standard ISO9001 and standard of the quality assurance system in the case of products intended for use in areas with danger of explosion – PN-EN 13980.

Accessories

 

Application

Roof fans ERF are manufactured in accordance with both international standard ISO9001 and standard of the quality assurance system in the case of products intended for use in areas with explosion hazard – EN 13980. They meet requirements provided in Directive ATEX 94/9/EC, they are designed for use in areas with explosion hazard excluding mines and mine excavations.

They meet requirements for group II category 2G/3G zone 1 and/or 2. They are designed for outdoor installation in connection with supply system. The transported medium temperature can not exceed -20°C to 40°C.

Construction

Fan enclosures made of galvanized steel sheet, powder painted.

The elements which minimize sparking risks are used in structure, including sheet brass inlet.

Electric motor

Three-phase (400V, 50Hz) motors with external impeller, suitable for use in areas with explosion hazard, equipped with posistor sensors - PTC. The motors must be protected by using a dedicated (no. Art. 91040858) protective relay (certified II (2) G - in accordance with Directive 94/9 / EC) and an external contactor.

The motors are suitable for speed control by means of transformer voltage regulator (minimum voltage - 115V) - contact the manufacturer is required.

Caution

The installer and user of the device are obliged to comply with the requirements laid down in Directive 99/92 / EC (the so-called. "ATEX USERS" (89/391 / EEC) concerning minimum requirements for safety and health protection of workers in areas with explosion hazard.
Name Nominal
voltage [V]
Speed
[r.p.m.]
P max
[W]
I max
[A]
Q max
[m3/h]
P
static [Pa]
Weight
[kg]
Temp.
min.
[oC]
Temp.
max.
[oC]
ERF/4-250T II 2G c IIB T3 400 1320 120 0.22 1650 220 20 -20 40
ERF/4-315T II 2G c IIB T3 400 1360 260 0.51 2650 325 21 -20 40
ERF/4-355T II 2G c IIB T3 400 1340 430 0.79 3650 400 35 -20 40
ERF/4-400T II 2G c IIB T3 400 1340 730 1.4 5200 500 45 -20 40
ERF/4-450T II 2G c IIB T3 400 1290 1100 1.85 7400 560 70 -20 40
ERF/6-450T II 2G c IIB T3 400 850 390 0.82 5000 250 62 -20 40
ERF/6-500T II 2G c IIB T3 400 890 660 1.25 6600 325 61 -20 40
ERF/6-560T II 2G c IIB T3 400 870 1050 2.2 9000 400 134 -20 40

Performance curves