Cooling Fans

COOLING FANS

Special cooling fans for forced ventilation of radiators for power transformers.

Service conditions:

According to IEC 60076-1 and IEEE C57.12.00 or unusual service conditions agreed between the purchaser and supplier

Standard:

IEC 60076-22-6 and IEEE C57.12.36 or unusual service conditions agreed between the purchaser and supplier.

Duty Type:

Continuous operation S1

Mounting Position:

Horizontal and Vertical.

Corrosion Class:

C4 acc. to ISO 12944-2 or another special requests.

Overall Dimension:

See detail in datasheets and drawings.

Technical Parameters:

See the datasheets.

Model RPM CFM(1) dB(A)
CF19 850 2758 51.5
1140 2936 56
1750 4806 63.5
CF19+ 1140 6230 64
CF23 850 4225 52
1140 6094 58.5
1750 8156 66.5
CF26 850 4010 47.5
1140 6164 56.5
1750 8355 68
CF27 850 5419 50.9
1140 7294 60
1750 10510 71.5

Motor Construction

Motor:

According to NEMA MG 1 (UL Certification); 1-phase or 3-phase motor with internal automatic reset overload protections sensing both temperature and current

Frame:

NEMA 48 with stainless steel shaft Total enclosed motor

Winding Insulation:

Class F

Winding
Temperature Rise:

Class B for longer motor life acc. to IEC 60085

Max Ambient
Temperature:

+131°F (+55°C) or another special requests.

Motor degree
protection:

IP54 enclousure according to IEC 60529 or another special requests

Final Coat
Standard:

ANSI 70 GRAY

Bearings:

Double sealed ball bearings

Connection Hole:

1/2" NPT

Drain Plugs:

The motor includes strategically positioned drain holes for both horizontal and vertical operation, according to instructions supplied with each fan

Fan Blade

Blade:

Each blade assembly is manufactured as a single piece of aluminum

Guards and Housing

Protection:

Acc. to IEC 60529 IP20 and OSHA requirements.

Finishing:

Hot-Dip Galvanizing ASTM A123 and/or EN 1461 or Stainless Steel in special requests

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