PSC motor

PSC motor

[¦pē¦es¦sē ′mōd·ər]
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The comparison assumes the PSC motor is 10% less efficient than the ECM even though the rated full-load amperage (FLA) is 2.
The airflow reduced by 10% for a PSC motor powered blower and did not change for a BPM motor blower as MERV increased - but the BPM motor used 10% more power to maintain the airflow.
A STANDARD TWO-SPEED BLOWER (aka "multi" speed) with a PSC MOTOR has one blower speed for heating and one for cooling.
Comprising 100 per cent speed controllable PSC motor and backward curved impellers, the model provides vibration-free operation with capacities to 1,175 cfm.
Zero Zone has made the PSC motor the standard for its cases and offers the ECM as an option.
For FPTU applications, the airflow for a SCR-controlled PSC motor is set by a technician in the field and typically not changed after installation or commissioning.
PSC motor speed is controlled with a silicon controlled rectifier (SCR).
The speed of a PSC motor can be controlled by a silicon-controlled rectifier (SCR).
What the data shows is what many have known for some time, which is that a series unit with an ECM motor (operating at constant volume) is more efficient than a parallel unit with a PSC motor.
8) Type Units Shipped Life Expectancy To Be Replaced (years) (2010) Room AC 9,085,500 9 5,575,100 Unitary ACs 5,833,354 11 5,353,676 and Heat Pumps Dehumidifiers 1,556,300 7 1,311,039 Furnaces, Gas, 2,300,000 15 (Gas) 2,600,967 (Gas) Warm Air 17 (Oil) 148,803(Oil) Freezers 2,098,000 11 2,420,200 Refrigerators 9,310,000 12 8,773,500 Table 3: Example simple payback: replacing a three-speed PSC motor with a BLDC motor.
Figures 1-3 are from House 4, which had a PSC motor, and Figures 4-6 are from House 7, which had a BPM motor.