EC Modular Plug Fans – Backward Curved Centrifugal Fans

EC Modular Plug Fans – Backward Curved Centrifugal Fans

Our EC Modular Plug fans feature an EC motor to motorise lightweight and aerodynamically designed backward curved impellers for superior noise attenuation and performance.

External rotor motors are usually contained within the depth of the fan impeller, thus saving the space normally occupied by a standard motor. They are located in the air stream, so temperature is limited, and are generally of protection class IP44, so the air needs to be clean and dry to avoid motor contamination. The range of backward curved impeller is available as a free running option or an EC modular plug fans configuration.

EC backward curved centrifugal fans develop pressure within the envelope of the impeller and do not, therefore, rely on a scroll housing for this purpose. They are relatively low cost and can be simply and cheaply housed. Air is drawn through a radius inlet ring, which minimises pressure losses and air leakage, and is discharged at 90° to the inlet axis. The impeller has a ‘non-overloading’ characteristic in that it draws maximum power near the centre of its pressure/volume flow curve.

Low-cost speed control is possible for EC fans by supply voltage variation, either by an electronic (triac) method or by a transformer.

E Wheel Motorised Impeller & Modular Plug Fan (1Ph & 3Ph)

GKHR (xxx) CIE – Motorised Impeller
GKHM (xxx) CIE – Fan Module / Plug Type

IP Rating: IP54

Fan Type
Voltage
(V)
Frequency
(Hz)
Input
Power (kW)
Rated
Current (A)
Speed
(rpm)
Max Temp
(°C)
IP Rating
(IP)
Sound
(dB)
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GKHR 315-CIE.088.4EA or
GKHM 315-CIE.088.4EA
230 50 / 60 0.5 2.8 2200 40 IP54 69
GKHR 355-CIE.112.4EA or
GKHM 355-CIE.112.4EA
230 50 / 60 0.5 2.7 1650 40 IP54 69
GKHR 355-CIE.112.5FA or
GKHM 355-CIE.112.5FA
230 50 / 60 1.12 5.0 2250 45 IP54 76
GKHR 355-CIE.112.5FA or
GKHM 355-CIE.112.5FA
400 50 / 60 1.70 2.8 2600 40 IP54 79
GKHR 400-CIE.125.4FF or
GKHM 400-CIE.125.4FF
230 50 / 60 0.5 2.8 1380 40 IP54 67
GKHR 400-CIE.125.5HF or
GKHM 400-CIE.125.5HF
400 50 / 60 1.60 2.5 2100 40 IP54 74
GKHR 400-CIE.125.5FA or
GKHM 400-CIE.125.5FA
230 50 / 60 1.16 5.2 1875 40 IP54 73
GKHR 450-CIE.136.5FA or
GKHM 450-CIE.136.5FA
230 50 / 60 1.15 5.1 1550 40 IP54 71
GKHR500-CIE.154.5HF or
GKHM500-CIE.154.5HF
230 50 / 60 1.15 5.1 1330 40 IP54 71
GKHR 450-CIE.136.5HF or
GKHM 450-CIE.136.5HF
400 50 / 60 1.65 2.7 1775 40 IP54 75
GKHR 450-CIE.135.6FF or
GKHM 450-CIE.135.6FF
400 50 / 60 3.50 5.1 2300 40 IP54 84
GKHR 450-CIE.135.6FF or
GKHM 450-CIE.135.6FF
400 50 / 60 1.50 2.4 1425 40 IP54 80
GKHR 500-CIE.154.6FF or
GKHM 500-CIE.154.6FF
400 50 / 60 2.90 4.4 1800 60 IP54 80
GKHR 560-CIE.175.6IF or
GKHM 560-CIE.175.6IF
400 50 / 60 3.26 5.0 1550 50 IP54 80

B Wheel Motorised Impeller & Modular Plug Fan (1Ph & 3Ph)

GKHR (xxx) CIB – Motorised Impeller
GKHM (xxx) CIB – Fan Module / Plug Type

IP Rating: IP54

Fan Type
Article
Number
Voltage
(V)
Freq
(Hz)
Input
Power
(kW)
Rated
Current (A)
Fan Speed
(min-1)
Max Air
Temp (°C)
IP Rating
(IP)
GKHR
(kg)
GKHM
(kg)
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GKHR250-CIB.080.4EA IE or
GKHM250-CIB.080.4EA
N86-25300 or
N88-25300
1Ph 230V 50/60 0.48 2.8 2850 40/60 IP54 5.2 11
GKHR280-CIB.090.5FA IE or
GKHM280-CIB.090.5FA IE
N86-28303 or
N88-28303
1Ph 230V 50/60 1.1 6.3 3000 40/60 IP54 10 16
GKHR280-CIB.090.5FA or
GKHM280-CIB.090.5FA
N86-28301 or
N88-28301
3Ph 400V 50 / 60 1.6 2.5 3500 40/60 IP54 10 16
GKHR 315-CIB.100.4EA IE or
GKHM 315 CIB 100 4EA
1Ph 230V 50 / 60 0.43 2.5 1850 40/60 IP54 6 14
GKHR 315-CIB.100.5FA IE or
GKHM 315-CIB.100.5FA
N86-31801 or
N88-31801
1Ph 230V 50 / 60 1.0 6.2 2400 40/60 IP54 10.5 18.5
GKHR 315-CIB.100.5FA IE or
GKHM 315-CIB.100.5FA
N86-31804 or
N88-31804
3Ph 400V 50 / 60 1.6 2.6 2900 40/60 IP54 10.5 18.5
GKHR 355-CIB.112.6FF IE or
GKHM 355-CIB.112.6FF
N86-35801 or
N88-35801
3Ph 400V 50 / 60 3.3 4.8 3000 40/60 IP54 21 31
GKHR 400-CIB.125.6FF IE or
GKHM 400-CIB.125.6FF IE
N86-40300 or
N88-40300
3Ph 400V 50 / 60 3.5 5.3 2600 40/60 IP54 21.5 38
GKHR 450 CIB.140.6IF or
GKHM 450 CIB.140.6IF
N86-45300 or
N88-45300
3Ph 230V 50 / 60 3.6 5.2 2150 40/60 IP54 27 47
GKHR 450 CIB.140.6IF or
GKHM 450 CIB.140.6IF
N88-45350 3Ph 400V 50 3.3 8.4 2050 40/60 IP54
GKHR 500-CIB.160.6IF IE or
GKHM 500-CIB.160.6IF IE
N86-50300 or
N88-50300
3Ph 400V 50 / 60 3.6 5.3 1750 40/60 IP54 28 55
GKHR560-CIB.180.6IF IE or
GKHM560-CIB.180.6IF IE
N86-56300 or
N-8856300
3Ph 400V 50 / 60 3.3 4.8 1450 40/60 IP54 30 62
GKHR 630-CIB.200.6NA IE or
GKHM 630-CIB.200.6NA IE
N86-63302 or
N88-63302
3Ph 230V 50 / 60 3.1 7.7 1140 40/60 IP54 37 74
GKHR 630-CIB.200.6NA IE or
GKHM 630-CIB.200.6NA IE
N86-63301 or
N88-63301
3Ph 400V 50 / 60 3.3 5.0 1181 40/60 IP54 37 74
GHKB 630-CEB.200.8LA N88-63350 3Ph 400V 50 6.6 9.8 1500 40/60 IP54
GKHB 710 CEB 200 8LA N88-71352 3Ph 400V 50 6.9 11.0 1280 40/60 IP54

RRE & RRM Motorised Impellers & Modular Plug Fans

RRE – Motorised Impeller
RRM – Fan Module with EC Plug Fan

Fan Type
Article Number
Voltage (V)
Frequency (Hz)
Motor Power Input (kW)
Rated Current (A)
Fan Speed (min-1)
Max Air Temperature (°C)
IP Rating (IP)
RRE (kg)
RRM (kg)
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RRE G9 192x40R or RRM G9 192X40R K49-A4-1 or L38-B2-1 230 50 / 60 0.14 1.15 3990 50 IP4X 1.2 1.5
RRE G9 225x63R or RRM G9 225x63R K49-A6-1 or L38-B4-1 230 50 / 60 0.150 1.19 2780 50 IP4x 1.7 3.0
RRE G9 225x50R 230 50 / 60 0.121 1.0 3350 50 IP4x 1.7

Technical Articles

Read our technical article on What causes an unbalanced impeller?

Applications

Electrical Enclosures Cabinets Axair Online Data Centre
Fan Coil Unit

Products in this Range

B Wheel Motorised Impeller

Designed to increase energy efficiency by up to 6% and reduce noise by 3 decibels

E Wheel Motorised Impeller

The latest design which significantly increases energy efficiency and reduces operating noise levels

RRE & RRM Backward Curved Centrifugal Fan

High performance motorised impeller and fan module with efficient EC motors

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With an ever growing focus on system efficiencies, manufacturers of industrial equipment must take into account individual components to ensure that these key influencing factors achieve the desired energy savings. Replacing inefficient components that are often overlooked in ventilation systems, can result in sizeable gains. A significant component in such systems is an efficient impeller. […]

Ecofit Ewheel – New EC Backward Curved Centrifugal Fan (19/02/2018)

Designed for low to medium pressure applications, Axair Fans are excited to launch the latest addition to our impressive range of backward curved centrifugal fans with the Ecofit EWheel. Developed and manufactured by supplier partner, Ecofit, the 250 diameter EC Ecofit EWheel supersedes the previous version in both aesthetic design and performance. Over the past […]

The Growth of EC (12/09/2018)

Historically, AC motors were used as the principal air driving force in HVAC applications running constantly at full power. The continuously increasing demand for a more energy efficient solution with a greater range of operation possibilities led to the development of the Electronically Commutated (EC) motor. Since its development in the 1960s, EC technology has […]