Kelly running 5305, Loud with high vibration

[methods]

As soon as you finish your project.. let me know what max temp your motor reach at 100V!

Mine reached 164 celsius at 105A 100V (Hard stop and go!)

Doc

I finally ran a proper test.
24" rear wheel
7.5Ah burnt off of an 88.8V pack
Hard riding trying trying to put the cells out of balance for a different test.

At the end of the ride the coil temperature was between 160C and 170C
There are a lot of variables in my measurement

I run 5V into a divider that has a 1K in series with a KTY83-122 sensor
After factoring in the error I get the above range.

I use this setup because the Kelly is programmed to accept this.
I can then set the temperature for protection and the temperature for turning back on
(which i dont use )

The hall sensors are rated to work up to 125C and be stored at 165C
Looks like we are fine. If they rate them to be stored at 165C there will be margin there.
I would not be scared till it hit 180C though I have heard other claim of failure at a lower temperture
I believe the 125C rating is to maintain linearity (which we dont really care about for this use)

-methods

 

[Doctorbass]

As soon as you finish your project.. let me know what max temp your motor reach at 100V!

Mine reached 164 celsius at 105A 100V (Hard stop and go!)

Doc

I finally ran a proper test.
24" rear wheel
7.5Ah burnt off of an 88.8V pack
Hard riding trying trying to put the cells out of balance for a different test.

At the end of the ride the coil temperature was between 160C and 170C
There are a lot of variables in my measurement

I run 5V into a divider that has a 1K in series with a KTY83-122 sensor
After factoring in the error I get the above range.

I use this setup because the Kelly is programmed to accept this.
I can then set the temperature for protection and the temperature for turning back on
(which i dont use )

The hall sensors are rated to work up to 125C and be stored at 165C
Looks like we are fine. If they rate them to be stored at 165C there will be margin there.
I would not be scared till it hit 180C though I have heard other claim of failure at a lower temperture
I believe the 125C rating is to maintain linearity (which we dont really care about for this use)

-methods

I know there is many temp class about electric motor. The H class is the maximum rate of 180 degree C on any point of the winding.

I asked to crystalyte about the class of the X5 serie and they just... dont know.. :? lol

My temp sensor is not exactly directly located on the winding.. but almost on the stator core cause i though that puting it too close to the intense magnetic field could induce some differential error/offset or noise on the temp sensor wires..

From now I try to keep my motor under 135 degree C.. the alarm...