IRB 250 B1 EC (archived 2017-08-16) | H. Östberg

IRB 250 B1 EC (archived 2017-08-16) Updated: 2020-11-17 Archived product

7880012 -

IRB 250 B1 EC

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...

	IRB 250 B1 EC 7880012
Parameter	Value	Unit
Voltage	230	V
Phase	1	~
Frequency	50/60	Hz
Power	217	W
Current	0.95	A
Speed	2800	r.p.m.
Max. temperature of transported air	45	°C
Weight	27	kg
Enclosure class	44	IP
Insulation class, motor	F
Duct connection	250	mm
Max. flow @ 0Pa	385	l/s
Max. pressure	616	Pa
Voltage range	200-277	V

Parameter	Value	Unit
(a) Manufacturer	Östberg	-
(b) Model code	IRB 250 B1 EC (archived 2017-08-16)	-
(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	0.184	m³/s
(h) Effective power input	0.213	kW
(i) SFP int	N/A	W/(m³/s)
(j) Face velocity	3.8	m/s
(k) Nominal external pressure	454	Pa
(l) Internal pressure drop	N/A	Pa
(n) Static efficiency	46.9	%
(o) External (and internal) leakage rate	0.17	%
(p) Filter classification	N/A	-
(q) Visual filter warning	N/A	-
(r) Sound power level	51	dB LwA
(s) Disassembly instructions	www.ostberg.com	-