News
NEWS
Three-phase motor stator winding and its end-to-end discrimination
1. three-phase motor stator winding three-phase motor has three stator windings, each winding has two leads, a total of six leads. The two outgoing lines of each winding can be found by measuring the on-off with a multimeter.
2. between the end and the end of the stator winding of a three-phase motor
In the case of determining the two leads of each winding of the three-phase motor, the head and tail of the three-winding leads can be further distinguished.
Measurement method one:(I) multimeter selection: DC 50μ
(II) measurement process:
1. Connect one lead wire of each winding of the three windings of the motor together, and connect the remaining three lead wires (one for each winding) together. This makes two sets of lead lines. Wind the two groups of lead wires on the two pens of the multimeter respectively. Rotate the rotor of the motor by hand and observe the pointer of the multimeter at the same time. If the pointer does not deflect (swing), it means that the three wires connected together are the lead wires at the first end (or tail end) of the three-phase winding, and the test is over. If the pointer is deflected (swung), it means that one phase of the winding is reversed. Continue with the next test.
2. Swap the two lead wires of any winding. (Note: Remember which winding is swapped.) In this way, two groups of outgoing lines are made. Repeat the above test: wind the two groups of lead wires on the two pens of the multimeter respectively. Rotate the rotor of the motor by hand and observe the pointer of the multimeter at the same time. If the pointer does not deflect (swing), it means that the three wires connected together are the lead wires at the first end (or tail end) of the three-phase winding, and the test is over. If the pointer is deflected (swung), it means that one phase winding is reversed. Continue to the next test.
3. Swap the two lead wires of any one of the remaining two windings to make two groups of lead wires. Repeat the above test: wind the two groups of lead wires on the two pens of the multimeter respectively. Rotate the rotor of the motor by hand and observe the pointer of the multimeter at the same time. If the pointer does not deflect (swing), it means that the three wires connected together are the lead wires at the first end (or tail end) of the three-phase winding, and the test is over. If the pointer is deflected (swung), it means that one phase winding is reversed. Continue to the next test.
4. Restore the two leads of the first transfer (transfer again). At this time, the three wires connected together are the lead wires at the first end (or tail end) of the three-phase winding, and the test is over. It can be verified by the above method: the two groups of lead wires are respectively wound on the two pens of the multimeter. Turn the motor rotor by hand while observing the multimeter pointer, which will not deflect (swing). The judgment is correct.
Measurement method two:
(I) multimeter selection: DC 50μ
(II) measurement process:1. Connect the two lead wires of one winding of the motor to the two pens of the multimeter respectively, one lead wire of the other winding to one pole of the battery, and the other lead wire to touch the other pole of the battery. At the same time, pay attention to observe the pointer deflection of the multimeter: if the pointer is deflected forward, it indicates that the connection of the positive pole of the battery and the connection of the negative pole (black pen) of the multimeter are the same end, the other two leads are the tail end (or head end). If the pointer deflects in the opposite direction, it indicates that the connection of the positive electrode of the battery and the connection of the positive electrode of the multimeter (red stylus) are the same as the first end (or the tail end), and the other two lead wires are the same as the tail end (or the head end). Mark the head (tail) ends of the two windings that have been identified. The first end of the two windings can be connected to one pen of the multimeter, and the tail end can be connected to the other pen.
2. Connect one lead wire of the third winding to one pole of the battery and the other lead wire to touch the other pole of the battery. At the same time, pay attention to the pointer deflection of the multimeter: if the pointer deflects forward, it indicates that the connection of the positive pole of the battery is the same as the connection of the negative pole (black stylus) of the multimeter, and the other two lead wires are the same as the tail (or head). If the pointer deflects in the opposite direction, it indicates that the connection of the positive electrode of the battery and the connection of the positive electrode of the multimeter (red stylus) are the same as the first end (or the tail end), and the other two lead wires are the same as the tail end (or the head end). Mark the head (tail) ends of the two windings that have been identified.
3. Verification: Connect the head (or tail) of the identified three windings to one pen and the tail end to the other pen. Rotate the motor rotor by hand, and the multimeter pointer will not deflect (swing). The judgment is correct.
Note: Because the three windings of the motor are not completely symmetrical, the pointer may still have a very small amplitude of deflection when the connection is correct, but the amplitude is much smaller than when it is incorrect.
RELATED INFORMATION
2025-02-07
2022-03-15
Unpaid Blood Donation-Pass on Warmth
2021-04-13
Foshan Lixiong Electromechanical Co., Ltd.
Address: West Xingli Middle Road, Lunjiao Industrial Zone, Shunde, Foshan City, Guangdong Province
Fax: +86-757-27736052
Copyright©2024 Foshan Lixiong Electromechanical Co., Ltd. |SEO Tags