DIY Electric Car Forums banner

1 - 6 of 6 Posts

·
Registered
Joined
·
37 Posts
Discussion Starter #1
Hi. I am running an AC51 motor with Curtis Controller 1239E and 144v battery pack.

I know I should be running HV DC fuses from traction battery to the charger, heater, DC/DC converter etc.

Does this look correct?

Traction Battery —> (FUSE - DC High Voltage - 600v 30 amp) —> DC/DC converter

Traction Battery —> (FUSE - DC High Voltage - 600v 12 amp) —> DC Heater

Traction Battery —> (FUSE - DC High Voltage - 600v 30 amp) —> ThunderStruck EV 2500 Charger

Also I only have one fuse in the HV traction battery pack (in the front engine compartment). I have read some people have one in the rear battery pack as well.

So would this be correct?

Rear Traction Battery pack negative—> (FUSE - DC High Voltage - 150v 400 amp) —> Front Traction Battery positive

Front Traction Battery negative —> (FUSE - DC High Voltage - 150v 400 amp) -> shunt

Cheers!
 

·
Registered
Joined
·
431 Posts
Hi. I am running an AC51 motor with Curtis Controller 1239E and 144v battery pack.

I know I should be running HV DC fuses from traction battery to the charger, heater, DC/DC converter etc.

Does this look correct?

Traction Battery —> (FUSE - DC High Voltage - 600v 30 amp) —> DC/DC converter

Traction Battery —> (FUSE - DC High Voltage - 600v 12 amp) —> DC Heater

Traction Battery —> (FUSE - DC High Voltage - 600v 30 amp) —> ThunderStruck EV 2500 Charger

Also I only have one fuse in the HV traction battery pack (in the front engine compartment). I have read some people have one in the rear battery pack as well.

So would this be correct?

Rear Traction Battery pack negative—> (FUSE - DC High Voltage - 150v 400 amp) —> Front Traction Battery positive

Front Traction Battery negative —> (FUSE - DC High Voltage - 150v 400 amp) -> shunt

Cheers!
How many watts is your DCDC? How about the heater?

The controller is 500 amps right? I would go with a fuse rated at Max controller amerage if the manual does not specify otherwise.

Yes with subpacks I always have a fuse close or inside the pack to protect the wire in case of it getting damaged, then shorting and killing the battery and creating a fire.
 

·
Registered
Joined
·
37 Posts
Discussion Starter #3
Thanks for the reply.

The heater is 1500 w.

The DC/DC converter is 128-160 V DC-DC 30 amp output.
 

·
Registered
Joined
·
37 Posts
Discussion Starter #4
Hey Brock I just checked out your Instagram. I actually recognize you from some FB posts that showed up on my feed. I really liked that Mustang redo. Nice work.
 

·
Registered
Joined
·
431 Posts
Thanks for the reply.

The heater is 1500 w.

The DC/DC converter is 128-160 V DC-DC 30 amp output.
Hi terrorr,

Thanks for the compliments.

Now down to biz. So your heater is 1500 watts. Power= Volts*Amps so Amps= Power/Volts thus Amps for heater Amps=1500/144, Amps =~10.41 so yes 12 amps fuse looks adaquate, though a 15 or 20 amp fuse would suffice and provide a bit of head room.

The rest of your calculations seem to be fine.

Regards,
Brock
 
1 - 6 of 6 Posts
Top