2 speed pool pump motor
2 speed pool pump motor
(OP)
Hi all I'm hoping I can get a little help understanding the winding of a single phase 2 speed electric pool pump motor
Are the windings wired in parallel or series
Thanks in anticipation
Are the windings wired in parallel or series
Thanks in anticipation

RE: 2 speed pool pump motor
Please take a picture of the 2-speed motor name plate. There may be some information on the terminal connection for different voltages or different speeds. In general, single-phase motors are designed for single speed. For 2-speeds, there may be 3-4 terminal for different voltages or speeds.
Che Kuan Yau (Singapore)
RE: 2 speed pool pump motor
This is the spec off eBay
Specifications
Model: VVPS215BUS
Material: ABS
Voltage: 230 V/ 60 Hz
Horse Power: 1.5 HP
Power Supply: 1100 W
High Speed Rotating: 3450 RPM
Low Speed Rotating: 1750 RPM
High Speed Max. Flow Rate: 340L per min./ 90 GPM
Low Speed Max. Flow Rate: 159L per min./ 42 GPM
High Speed Max. Head Lift: 49 ft/ 15 m
Low Speed Max. Head Lift: 10 ft/ 3 m
High Speed Amps: 4.8 A
Low Speed Amps: 2.2 A
Water Temperature: 0-40℃/ 32-104 °F
Interfaces Diameter: 1-1/2"
RE: 2 speed pool pump motor
Looks like it then a mixture of a 4 pole (low speed) or 2 pole (high speed) motor
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: 2 speed pool pump motor
RE: 2 speed pool pump motor
So im trying to figure would the internal run windings be in series or parallel
Thanks again for every ones input much appreciated
RE: 2 speed pool pump motor
1. Based on the schematic and the terminal connection, the windings are in series.
2. Connection: Green conductor to GRD terminal, Neutral to L2. [always]
(a) Hi-speed: Line to L1, (b) Lo-speed: Line to A.
3. If you wish to be speed selectable, add an external single-pole Hi Lo switch. Connect Line to the [common* pole of the switch] ; (a)Hi-speed: common* to L1; (b) Lo-speed: common* to A.
4. BTW: the centrifugal switch shown in red in N.O. is incorrect. It should be N.C. when the motor is stationary=stop; open when the motor is up to speed, switching off the start capacitor.
Che Kuan Yau (Singapore)
RE: 2 speed pool pump motor
So the top diagram i drew is in series and bottom is in parallel therefore am i correct in concluding you are saying that the internal windings of a single phase 2 speed motor are connected in series as per the top drawing ?
Thanks
RE: 2 speed pool pump motor
"...So the top diagram i drew is in series and bottom is in parallel therefore am i correct in concluding you are saying that the internal windings of a single phase 2 speed motor are connected in series as per the top drawing ? "
1. Based on the diagram, the windings are in series.
2. Attention: is this diagram is the actual internal wiring by the manufacturer for THIS motor ? . If positive, fine.
3. BTW: NOT all 2-speed motors [must be wound in series]. There are numerous variants on the market. Use the diagram that comes with the equipment.
4. Proposal: use a simple off-lo-hi switch instead of two double-pole relays would be simple in wiring and lower cost.
Che Kuan Yau (Singapore)
RE: 2 speed pool pump motor
No its a diagram i drew because i wanted to understand how the inner windings were wired
RE: 2 speed pool pump motor
There are so many different internal connections for 2/4 pole single phase motors and you can't just guess.
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