The common faults outside the motor are mainly manifested in the following aspects, and the method of discharging the fault is also listed in the small series of Dalan Motor. Pvc Self-adhesive Floor Stickers pvc self adhesive flooring,peel and stick vinyl floor stickers,removable vinyl floor stickers,PVC floor glue floor sticker,pvc adhesive floor wallpaper JIANGSU ARTSTYLE DECORATION MATERIALS CO..LTD , https://www.artstyledecor.com
The common faults outside the motor are mainly manifested in the following aspects, and the method of discharging the fault is also listed in the small series of Dalan Motor.
Fault 1: The motor cannot rotate after power-on, but there is no abnormal noise, no odor and no smoke.
Method 1: Check the power circuit switch, whether there is a break point at the fuse and junction box, and repair if necessary.
Fault 2: After the power is turned on, the motor does not turn, and then the fuse is blown, indicating that there may be a lack of phase-to-phase power supply or sub-winding phase-to-phase short circuit, stator winding grounding, and stator winding wiring errors.
Method 2: First check whether the knife gate has a phase failure. The power circuit is a pressure-resistant machine, a daytime tester, and the bridge is eliminated one by one to find the fault point.
Fault 3: The motor no-load current is unbalanced. If the three-phase phase difference is large, it may be re-winding, the stator three-phase winding turns are not equal, the winding end-to-end connection is wrong, the power supply voltage is unbalanced, the winding has a turn-to-turn short circuit, and the coil is reversed. Waiting for a fault.
Method 3: Eliminate and eliminate these faults one by one by winding inter-turn impulse withstand voltage tester, bridge test, and the like.
Fault 4: The motor no-load current balance, but the value is large.
Analysis of the cause: It may be that when the repair, the stator winding turns are excessively reduced, or the Y-connected motor is misconnected to Δ, or the motor is assembled, the rotor is reversed, the stator core is not aligned, and the effective length is shortened. Or when overhauling the old windings, use the thermal disassembly method to make the iron core burn out.
Method 4: These problems are repaired one by one, and if the number of turns is reduced, the correct winding is restored by rewinding the stator windings. If the connection is wrong, it will be changed to Y. If it is an assembly error and the core is burned, reassemble it and repair the core to solve it.
----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant
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