subject: Three Phase Asynchronous Motor Speed Deceleration Troubleshooting List [print this page] Reducer speed motor shell charged
1power line and ground fault
2speed motor winding damp, insulation aging
3lead wires and terminal box grounding
The 4end of the coil grounding contact end cover
1correct wiring
2speed motor drying treatment; aging of the insulation to update
3dressing or update a leading-out wire insulation; repair wiring box
4remove the end cover, check ground point, coil grounding shall be insulated and painting, and cover pad insulating paper
Motor no-load operation time load current imbalance, and vary greatly
1rewind, three-phase winding turns are not
2winding terminal fault
The 3power supply voltage unbalance
4 winding fault (inter-turn short circuit, Mo coil assembled anti etc.)
1rewinding coil
2identify the head end and the tail end correction and then start the motor deceleration speed test
The 3power supply voltage is measured, to find the cause and elimination
4speed motor winding open check polarity and fault, and correct and eliminate fault
Winding rotor speed motor rotor ring the excessive sparks
1winding rotor brush brand or model appropriate
2brush pressure is too small or brush pressure inequality
3brush stuck inside the brush handle, brush and slip ring contact
4brush and slip ring contact is not good
1like element specifications brush
2brush pressure, to meet the requirements
3grinding brush, make what UZ brush clearance requirements, and requires a uniform gap
The 4surface of the slip rings or wipe the oil processing
Other
1rewind, the number of turns of the coil is not enough
The 2.Y connection error connected in delta connection
The 3supply voltage is too high
4speed motor improper assembly ( such as reversed, set
The rotor core is not aligned, the end cap screw fixation asymmetry makes the end cap oblique or loose )
The 5 air gap or uneven increase
6stitches removed, so that the core overheating burning loss
1rewinding coil, increase reasonable turns
2winding connection for Y coupling correction
The 3power supply voltage is measured, if the power supply itself voltage is too high, and the power supply department negotiation
The 4check assembly quality, eliminate fault
5adjustment of the gas gap, for once the rotor speed reducer gear motor vehicle needs to be replaced with new rotor or change around the correct no-load current major problem.
6maintenance core or recompute winding compensation
by: becky
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