R87T-A4A05H Omron, R87T-A4A05H Datasheet - Page 14

• Manufacturer Part Number: R87T-A4A05H
• Description: Tube Axial Fan
• Manufacturer: Omron
• Series: R87Tr

Specifications of R87T-A4A05H

• Fan Type: Tubeaxial
• Size / Dimension: Round - 150mm Dia x 38mm W
• Voltage Rating: 200VAC
• Power (watts): 48W
• Rpm: 3100 RPM
• Noise: 58 dB
• Static Pressure: 0.430 in H2O (107.0 Pa)
• Air Flow: 201.2 CFM (5.70m³/min)
• Termination: 2 Wire Leads
• Bearing Type: Ball
• Weight: 1.9 lbs (861.8g)
• Termination Style: 58 dB
• Current Type: AC
• Supply Voltage: 200 V
• Airflow: 201.2 CFM
• Speed: 3100 RPM
• Housing Material: Aluminum Die-Cast
• Product: Fans
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: R87TA4A05H

12
Technical Guide for Axial Fans
■ Axial Fan Glossary
Nominal Value
The average value of data based on actual measurements. Nominal
values cannot be treated as rated values. Ask your OMRON
representative for details on rated values.
Flow Rate: Q (m
The volume of air discharged by the Fan in a unit of time.
Static Pressure: Ps (Pa)
The pressure difference across the front to the back of the Fan
generated by the discharged air, which is unaffected by air flow
speed.
Maximum Flow Rate: Q max. (m
The volume of air discharged by the Fan when the static pressure is
adjusted to zero (Pa) at the flow measurement unit.
1. The air pressure across the
front to the back of the Fan
does not change when the
Fan is stopped.
P
Fan
Same as
water level
P
3
/min.)
2. Static pressure (Ps) is
generated at the front of
the Fan when it rotates.
P
Fan
3
/min.)
Ps
P+Ps
Maximum Static Pressure: Ps max. (Pa)
The pressure difference inside and outside the Unit when the flow
rate is adjusted to zero (0 m
This would be the pressure in front of the Unit when the front of the
fan was completely sealed.
System Impedance
The flow resistance inside a mounted Axial Fan caused by the
density of parts and shape of the flow path.
Impedance Protection
A method of preventing burning damage when the motor is restricted
from rotating by setting the motor winding impedance (AC resistance)
to a value giving a temperature rise in the windings below the
temperature at which burning occurs .
Thermal Protection
A method of preventing burning damage when the motor is restricted
from rotating by setting a thermal element to interrupt operation
before the motor reaches a temperature at which burning occurs.
P
Fan
3
/min.) at the flow measurement unit.
Ps max.
P+
Maximum value of difference
Ps max.