1 hvacr317 – core for refrigeration motor application compressor motors motor application...
TRANSCRIPT
![Page 1: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/1.jpg)
1
HVACR317 – Core for Refrigeration
Motor ApplicationCompressor Motors
![Page 2: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/2.jpg)
2
HERMETIC COMPRESSORS CANNOT BE SERVICED
![Page 3: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/3.jpg)
3
HERMETIC COMPRESSOR CROSS SECTION
![Page 4: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/4.jpg)
4
HERMETIC COMPRESSORS MAY HAVE CURRENT RELAYS FOR MOTOR
STARTING
![Page 5: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/5.jpg)
5
CURRENT RELAYSCLOSE ON HIGH AMPSOPEN ON LOW AMPS
![Page 6: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/6.jpg)
6
MOTOR CURRENT PROFILE
AMPS
APPLIED
MOTOR STARTS
MOTOR SPEED INCREASE MOTOR AT
SPEED
![Page 7: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/7.jpg)
7
MOTOR CURRENT PROFILE
CURRENT RELAY CUT-IN
MOTOR STARTS
CURRENT RELAY CUT-OUT MOTOR AT
SPEED
![Page 8: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/8.jpg)
8
Once the motor is started, the amps level off to FLA (Full Load Amps).
Locked Rotor Amps
(LRA) Full Load Amps (FLA)
AMPS
TIME
AMPS
100%
0%
100%
0%Speed
CURRENT RELAY CUT-IN
CURRENT RELAY CUT-OUT
![Page 9: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/9.jpg)
9
HERMETIC COMPRESSOR WIRING with CURRENT
RELAYS
![Page 10: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/10.jpg)
10
HERMETIC COMPRESSOR WITH CAPACITOR
![Page 11: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/11.jpg)
11
POTENTIAL RELAYS USED TO START ELECTRIC
MOTORS
![Page 12: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/12.jpg)
12
POTENTIAL RELAY APPLICATION
![Page 13: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/13.jpg)
13
POTENTIAL RELAY OPERATION
CURRENT FILLS THE START CAPACITOR AT STARTUP
![Page 14: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/14.jpg)
14
POTENTIAL RELAY OPERATION
CURRENT FILLS THE START CAPACITOR AT STARTUP
![Page 15: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/15.jpg)
15
POTENTIAL RELAY OPERATION
CURRENT BY-PASSES THE START CAPACITOR AFTER MOTOR SPEED
![Page 16: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/16.jpg)
16
POTENTIAL RELAY OPERATION
FLUX LINES BUILD ACROSS THE COIL OPENING THE CONTACTS
![Page 17: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/17.jpg)
17
HARD START KITS FORHART-TO-START
MOTORS
![Page 18: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/18.jpg)
18
CAPACITOR START CAPACITOR RUN MOTOR
CSCR MOTOR
![Page 19: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/19.jpg)
19
MEASURING CURRENT with a CLAMP-ON AMMETER
CURRENT RELAY APPLICATION
POTENTIAL RELAY APPLICATION
![Page 20: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/20.jpg)
20
MEASURING CURRENT with a CLAMP-ON AMMETER
CURRENT RELAY APPLICATION
![Page 21: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/21.jpg)
21
MEASURING RESISTANCE with a MULTIMETER
MOTOR WINDING RESISTANCE
CURRENT RELAY COIL RESISTANCE
![Page 22: 1 HVACR317 – Core for Refrigeration Motor Application Compressor Motors Motor Application Compressor Motors](https://reader036.vdocuments.mx/reader036/viewer/2022062301/56649edd5503460f94bedf21/html5/thumbnails/22.jpg)
22
RESISTANCE MEASUREMENTS ACROSS
MOTOR WINDINGS
LEAD POSITIONS RESISTANCE MEASUREMENT
R to C LOW RESISTANCE
S to C MEDIUM RESISTANCE
HIGH RESISTANCER to S