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If the markings on the wires coming out of the motor are standard, the only thing you need to do is swap the wires labeled Z1 and Z2. Winding Design and Motor Repair

It's good to know. Someone might think that you are the moderator/owner of this forum as well not just ordinary member as others.

Read the product description before you buy that junk. BTW, this kind of post doesn't belong on electrical engineering. It's more suited for a hobby forum.

Incidentally, how can you tell OP is logging in from the Philippines? Enlighten the rest of us.

A winding diagram for this particular PAM two-speed winding, and for any other PAM, PPM, or Dahlander two-speed winding, can be found at the link below. Link

Hi, eeprom, Please attach a photo of the motor nameplate. Provide a bit more information about the maintenance history of these motors. Do the problems occur from the very beginning or only after rewinding? Very often, the only measure that a service center takes in the case of "inverter...

Sorry JMGotts, but your last post and the diagram look a bit confusing. Besides, you didn't draw the thermal protection that exists in the motor (usually close to zero resistance). My suggestion is to take the motor to a service center where they can properly test, label, and connect it to...

It's a single-speed motor. ACW

A standard dual-voltage motor with a voltage ratio of 1:2 must have 9 or 12 leads, not 6. A 6-lead motor can also be a dual-voltage motor, but with a voltage ratio of 1:1.73 (not 1:2). Internal & External Motor Wiring

I'm wondering where my post from yesterday about the design of unbalanced three-phase windings went. Is it a technical issue, or was the post removed for moderation reasons? If it's a technical problem, I'll be happy to repost it. However, if it was removed, it would be helpful to understand...

At first sight, it seems that the issue might be related to the compressor rather than the motor. Has the true cause of the previous failure been identified and resolved? Another point to clarify is the statement: What exactly does that mean? Many winders consider only the turns per coil...

The fact that the FLA (Full Load Amps) of the new motor is higher than that of the old one does not mean that the new motor draws more current than the old one. You should only compare the actual running Amps of both motors rather than the FLA values from the nameplate. Regards Winding Design...

Explanation is here.

Hi, gb2835 The winding diagram of a 42-pole winding with 36 slots is attached (if it is a three-phase two-layer winding). It may help as it shows which coils belong to each phase. More on this topic...

If there's only one motor involved and if this has been happening from the very beginning since it was installed, it's possible that there's a weak winding design issue, especially on the rotor. Something might have gone wrong with the custom motor design. ACW

Hi, TT, I see two possible scenarios here: - Damage to one or more bars on the rotor, causing the motor to sometimes fail to start (depending on the position in which the rotor stopped). - It's possible that the power supply to the motor is weak at certain moments (for example, if another...

It is obvious that you cannot do it on your own. Take it to a service center that deals with such matters ACW

The windings of this motors can be redesigned for 575V. Power and torque remain the same if the frequency is not changed. New windings cannot damage the pump or fan in any way. It is true that any motor can be damaged during excessive heating of the windings when removing the old winding, but...

Before redesigning the motor itself, I would test what happens if the motor is connected via an auto-transformer at 264 V. It is possible that you may need to experiment with the values of capacitors. Also, the centrifugal switch (if it exists) could still cause problems by disconnecting the...

Besides the soft starter and VFD, there are other ways to start this motor. It's important to keep in mind that this is a fan motor. Attached are a few shots from a nearby service center that show a five-step speed control transformer regulator for the fan. The speed is controlled solely by...