ASHRAE - HVAC SYSTEMS AND EQUIPMENT SI CH 44
MOTORS, MOTOR CONTROLS, AND VARIABLE-SPEED DRIVES
inactive
| Organization: | ASHRAE |
| Publication Date: | 1 January 2008 |
| Status: | inactive |
| Page Count: | 14 |
scope:
GENERAL-PURPOSE INDUCTION MOTORS
The electrical industry classifies motors as small kilowatt or integral kilowatt. In this context, kilowatt refers to power output of the motor. Small kilowatt motors have ratings of less than 0.75 kW at 1700 to 1800 rpm for four-pole and 3500 to 3600 rpm for twopole machines. Single-phase motors are readily available through 4 kW and are most common through 0.6 kW, because motors larger than 0.6 kW are usually three phase.
Table 3 lists motors by types indicating the normal power range and type of power supply. All motors listed are suitable for either direct or belt drive, except shaded-pole motors (limited by low starting torque).
Document History
January 1, 2012
CENTRIFUGAL PUMPS
A description is not available for this item.
HVAC SYSTEMS AND EQUIPMENT SI CH 44
January 1, 2008
MOTORS, MOTOR CONTROLS, AND VARIABLE-SPEED DRIVES
GENERAL-PURPOSE INDUCTION MOTORS
The electrical industry classifies motors as small kilowatt or integral kilowatt. In this context, kilowatt refers to power output of the motor. Small kilowatt...
January 1, 2004
Air-To-Air Energy Recovery
GENERAL-PURPOSE INDUCTION MOTORS
The electrical industry classifies motors as small kilowatt or integral kilowatt. In this context, kilowatt refers to power output of the motor. Small kilowatt...
January 1, 2000
Air-To-Air Energy Recovery
A description is not available for this item.