IRB 250 E1 EC (archived) | H. Östberg

IRB 250 E1 EC (archived) Updated: 2020-11-17 Archived product

Insulated duct fan with circular connections.
Equipped with 50 mm of thermal and acoustic insulation makes it ideal for handling cold air.
Designed for high pressure and long duct runs.
The design prioritise functionality, durability and longevity.
Impeller with backward curved blades.
The external rotor motor has maintenance-free sealed ball-bearings and is very energy efficient.
Integrated motor protection.
Junction box has enclosure class IP 54.
Speed controlling can be done with the built-in potentiometer, 0-10 V alt. external control.
The housing is manufactured from galvanized sheet steel.
Duct connections are equipped with rubber seals.
The fan is intended to be installed in a duct system.
A duct connected fan can be installed outside or in damp environments.

Generating diagrams...

Variable control

User input

Air Flow (l/s)

External static pressure (Pa)

Data

Air Flow (l/s)

External static pressure (Pa)

Power (W)

Speed (r.p.m.)

Current (A)

Voltage (V)

230

Efficiency (%)

SFPv (kW/m3/s)

Change the "User input" by dragging the point, or by entering new values.

Generating diagrams...

Parameter
Voltage
Phase
Frequency
Power
Current
Speed
Max. temperature of transported air
Weight
Enclosure class
Insulation class, motor
Duct connection
Max. flow @ 0Pa
Max. pressure
Voltage range

Parameter	Value	Unit
(a) Manufacturer	Östberg	-
(b) Model code	IRB 250 E1 EC (archived)	-
(c) Declared type	NRVU / UVU	-
(d) Type of drive	Variable speed drive	-
(e) Type of HRS	N/A	-
(f) Thermal efficiency	N/A	%
(g) Nominal flow rate	0.271	m³/s
(h) Effective power input	0.293	kW
(i) SFP int	N/A	W/(m³/s)
(j) Face velocity	5.5	m/s
(k) Nominal external pressure	431	Pa
(l) Internal pressure drop	N/A	Pa
(n) Static efficiency	63.5	%
(o) External (and internal) leakage rate	0.12	%
(p) Filter classification	N/A	-
(q) Visual filter warning	N/A	-
(r) Sound power level	64	dB LwA
(s) Disassembly instructions	www.ostberg.com	-