Facebook
Google
GitHub
Linkedin
If I have an 800KV 12KW motor, rated at max 60V, 200A, and i supply power to this motor using (say) 45V li-po batteries through an ESC (ideally rated higher than 200A), what effect will this have on my configuration? Will the battery be safe and will the motor pull a higher amperage in order to produce the same power, thus frying the motor and ESC?
safety of desired configuration
- Thread starter shay7
- Start date
AlbertHall
- Joined Jun 4, 2014
- 12,640
Its used in RC boats, Link - https://www.rcgenesis.net/sss-5694-800kv-brushless-motor
Yes, 8000 Kv800KV ??
What kind of motor is it?
8000 Kv is the "RPM to Voltage" ratio of the motor.
Last edited:
Is your 200 Amp ESC, current limited to 200 amps ?
If true then no the motor will not "... pull higher amps in order to produce the same power ..."
The motor will consume less power at 45 Volts vs 60 Volts
12,000 Watts = 60 Volts x 200 Amps
9,000 Watts = 45 Volts x 200 Amps ( or less* )
* The 45 Volt battery pack may not be able to push 200 Amps into the motor
Last edited:
KeithWalker
- Joined Jul 10, 2017
- 3,614
It depends on the load you are using.
If, under load, when connected to 60V, the motor is drawing close to its maximum of 200A, connecting it to 45V, using the same load will cause it to draw more current and exceed its ratings.
If, under load, the motor is drawing much less than maximum current, It may be possible to change the load (prop diameter or pitch) to work with a lower supply voltage at higher current without exceeding the limits, to supply the same power. To do that you will need the detailed characteristics of the motor and of different props to match them correctly.
