Centrifugal Fans Brochure - Flextraction.co.uk

ACCESSORIES
AR
Soft starters for three-phase motors.
Features:
• Especially designed to reduce the current peak caused during start-up of fans with three-phase motors.
• Power Voltage 400V + - 10% 50/60Hz
• Mounted in box for DIN-35 rail
• Possibility of adjusting the starting torque, acceleration time and deceleration time.
Model AR-2 AR-4 AR-7.5 AR-10 AR-15 AR-20 AR-30
Supplied voltage
400 V ±10% 50/60 Hz
Motor power in kW at 400 V 1.5 3 5.5 7.5 11 15 22
Minimum motor power 40% of the motor’s nominal power 20% of the motor’s nominal power
External fuses (quick-action) in (A) 16 25 35 25 35/40 50 63
Nominal current in (A) 3.5 6.5 12 17 25 32 45
Adjustment range of start-up torque From 0 to 80%
Adjustment range of start-up time From 0.5 to 12 s From 0.5 to 10 s
Braking torque Level set at 70%
Adjustment range of deceleration time From 0.5 to 12 s From 0.5 to 10 s
Setup time
200 ms
Working temperature
0ºC….45ºC
Storage temperature
-25ºC….75ºC
Protection level
IP20
Environmental conditions Overpressure category III. Pollution level 2
Power reduced with max. temperature
1% for every 1ºC increase in the maximum temperature
Maximum height for mounting
Up to 1000 m
Power reduced with max. height 0.5% for every 100 m over 1000 m.
Humidity
93% maximum without condensation
Maximum cycles per hour (3 x I nom. 10 sec) 90/h 60/h 30/h 60/h 40/h 30/h 20/h
Weight in kg. 0.4 1.0
Measurements Width (W) mm 45 45 52.5
Height (H) mm 73 173 178
Depth (D) mm 122 152 158
Assembly Fixing A x B On DIN guide rail
RFT RFM
Features:
• The RFT converter series are suitable to vary the
speed, via voltage and frequency, of axial and
centrifugal fans with 400V three-phase motors.
Converter power supply: 400V three-phase.
50/60 Hz.
• In accordance with Electromagnetic Compatibility
Directives 92/31/EEC and 93/68/EEC and in
accordance with Low Voltage Directive 73/23/EEC
Frequency converter for 400V three-phase motors.
Features:
• The RFM converter series are suitable to vary the
speed, via voltage and frequency, of axial and
centrifugal fans with 230V three-phase motors.
Converter power supply: 230V single-phase.
50/60 Hz.
• In accordance with Electromagnetic Compatibility
Directives 92/31/EEC and 93/68/EEC and in
accordance with Low Voltage Directive 73/23/EEC
Model RFT-0.5 RFT-1 RFT-2 RFT-3 RFT-5.5 RFT-7.5 RFT-10 RFT-15 RFT-20 RFT-25 RFT-30
Motor (CV) 0.5 1 2 3 5.5 7.5 10 15 20 25 30
(kW) 0.37 0.75 1.5 2.2 4 5.5 7.5 11 15 18.5 22
Current (A) 1.25 2.5 4 6 9 12 16 24 30 39 45
kVA 0.95 1.9 3 4.5 6.9 9.1 12.2 19.1 23.9 31.1 35.9
Input
Three-phase
Voltage (V) 3 x 380…480 V (-15% +10%)
Frequency (Hz) 50 – 60 Hz (± 5%)
Output
Three-phase
Voltage (V) 3 x 380…480 V
Frequency (Hz) 0….400 Hz 0...120 Hz
Braking torque 20% (with external resistance: 100%. 150%)
Braking unit Incorporated in the equipment Optional
Size Width (W1) mm 70 70 100 140 140 180 180 200 250 250 304
Height (H1) mm 128 128 128 128 128 220 220 284 385 385 460
Depth (D1) mm 130 130 130 155 155 170 170 182 201 201 234
Weight (Kg) 0.76 0.77 1.12 1.84 1.89 3.66 3.66 6 12.5 13 20
Method of refrigeration
Forced air
199