I wonder if you could please come up with some thoughts as to why my controller overheats at relatively low currents.
Once it reaches 90 Celsius it downregulates the current which can be dangerous in some situations.
Latest example: running at 450 rpm = 30 amp for an hour
when the controller downregulated to 200 rpm for 10 minutes before resuming at 450 rpm.
Ideally I would like to be able to run at 200 amps for 90 minutes.
Heat dispersal is optimised in regards to airflow and a fan that starts at 50 Celsius.
The controller is an older model and I'd be happy to get a new one.
I'd like to hear what kind of controller you suggest.
I've got a 4.5 ton 29 Roberts with a 48V 15s 4p 450 Ah 21.6 kWh LiFePo battery. (usable 360 Ah = 17.3 kWh)
The controller is a Kelly
KAC72601-8080I
1 Minute Current600A
Continuous Curent240A
Voltage24-72V
The motor is a 7.5 KW, 4P, 415V, AHE132M4, 3PH, MEP S2
rewound to 30 VAC, air cooled
The motor doesn't get hotter than 80 Celsius
Here is the average performance I get with a hull that could be cleaner.
Rpm. Amp. Knots
350. 20. 1.5
400. 28. 2.0
450. 30. 2.1
500. 50. 2.5
550. 63. 2.7
600. 80. 3.0
650. 93. 3.3
700 113. 3.5
750. 140. 3.7
800 180
900 260
Thank you so much for your thoughts
Cheers
Mich
_._,_._,_
Groups.io Links:
You receive all messages sent to this group.
View/Reply Online (#31814) | Reply To Group | Reply To Sender | Mute This Topic | New Topic
Your Subscription | Contact Group Owner | Unsubscribe [newarmyguitar24@gmail.com]
_._,_._,_
No comments:
Post a Comment