GoldenMotor.com Forum
General Category => General Discussions => Topic started by: Just on February 19, 2013, 03:42:53 PM
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Hi All,
Motor is burned -> what does it mean? What's exactly burned? Windings?
Thank you!
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Yes you are right :)
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Hm... How could I test the windings in the Mid-Motor?
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I dreally don't never donme before.
But can you open the motor and have a look at the windings?
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When the smoke or smell gets out of motors they're pretty much knackered, larger motors can be rewound if financially viable.
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Thanks OzGeeksGarage! You are welcome!
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How do you know the motor is burned. If it smelled bad it may be burned. But it could be something else.
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Could the windings been tested by just measuring the resistance between the phases?
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They could be measured, you also need to do an insulation test at double the motors rated voltage too, you need to know what the readings are for a good motor, you can have windings short circuited or open circuited from overheating, but with 20 years experience as an electrician, once I open a motor up and smell it's burnt, even if it still works it's a good chance it won't work for very long. Your only chance is that there's something electronic inside burnt out if it has an inbuilt controller.
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Why the Motors are burned? Due to over-current consumption? Are there other cases (besides getting water inside of the motor)?
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Overcurrent = heat = burning.
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Okay, so what's the protection?
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Temperature sensor or current limit.
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As for the temperature sensor, do you have one to recommend it?
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What kind of controller do you have?
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I have Kelly's KBS Controller? Why? Is the matter what's the Controller?
The Cyclone Motors use some temperature sensor, which works like a switch (when the temperature is over the threshold, it's switched OFF, otherwise it's ON). I don't know neither its part number nor the manufactured brand.
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Aaha just use the one as mentioned in the manual.
It's a cheap one and you can adjust the overtemp in the software ;D
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Circuit breaker or fuse may be an option as well, there are 2 types of fuses Slow blow and Fast blow, a slow blow will handle it's roughly it's rating for maybe a minute before blowing a fast blow or circuit breakers are nearly instant and precise. Bear in mind most motors pull 3-5 times their rated current on start up. So you can't set a quick blow fuse to the rated current. Circuit breakers are probably better bet and more convenient to reset, try one maybe 10% above the rated current, see if trips during normal usage, then go the next size up, assuming that your normal usage isn't more than the motor is designed for, best to check the motor temperature by putting your hand on it regularly, if it's getting anywhere near too hot to touch, you're overloading it, check it's temperature every time you pull up at a destination till you workout what is normal. Another idea is to install an Ammeter so you can actually see the motor current during usage.
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I think circuit breaker is a less good option.
Just for example when riding steap hills, bridges etc.
Current is higher so.....it could blow your fuse....
Or the circuit breaker gets hot = loss of power.
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Aaha just use the one as mentioned in the manual.
Which one? Which temperature sensor should be used with the Controller? Where might be bought?
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you can adjust the overtemp in the software ;D
What's temperature range is acceptable?
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This one:
http://Kellycontroller.com/accessories-c-29.html?page=2&sort=0a
Just search on Ebay or somewhere for cheaper price :)
Magnets max. temp are usually 100C.