Ever wonder what happens to an AC breaker used on DC?

Started by FNG, June 09, 2021, 01:59:11 PM

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FNG

We got board this AM and decided to see what happens to a Square D breaker with DC on it, We also tested 2 Midnite DC breakers well above the rating

https://www.youtube.com/watch?v=B-xInEewI_U

ClassicCrazy

system 1
Classic 150 , 5s3p  Kyocera 135watt , 12s Soneil 2v 540amp lead crystal for 24v pack , Outback 3524 inverter
system 2
 5s 135w Kyocero , 3s3p 270w Kyocera  to Classic 150 ,   8s Kyocera 225w to Hawkes Bay Jakiper 48v 15kwh LiFePO4 , Outback VFX 3648 inverter
system 3
KID / Brat portable

boB

Yes, it was good.

Would like to see it using a 300V DC breaker.   I bet that works fine.

Another  good test might be be to wire a polarized DC breaker up backwards.  They don't work as well backwards

boB


K7IQ 🌛  He/She/Me

ClassicCrazy

Quote from: boB on June 09, 2021, 11:27:40 PM
Yes, it was good.

Would like to see it using a 300V DC breaker.   I bet that works fine.

Another  good test might be be to wire a polarized DC breaker up backwards.  They don't work as well backwards

boB
I know I need to get a higher rated breaker but right now I am using one of those 150v mnepv breakers on my 240v dc direct dc water heater . Nothing has cooked yet.

Photonic Induction is back and I am just now watching him try to blow a 5000 amp fuse .
https://youtu.be/0mGhhdPgXG8

Larry
system 1
Classic 150 , 5s3p  Kyocera 135watt , 12s Soneil 2v 540amp lead crystal for 24v pack , Outback 3524 inverter
system 2
 5s 135w Kyocero , 3s3p 270w Kyocera  to Classic 150 ,   8s Kyocera 225w to Hawkes Bay Jakiper 48v 15kwh LiFePO4 , Outback VFX 3648 inverter
system 3
KID / Brat portable

boB

Quote from: ClassicCrazy on June 09, 2021, 11:46:56 PM
Quote from: boB on June 09, 2021, 11:27:40 PM
Yes, it was good.

Would like to see it using a 300V DC breaker.   I bet that works fine.

Another  good test might be be to wire a polarized DC breaker up backwards.  They don't work as well backwards

boB
I know I need to get a higher rated breaker but right now I am using one of those 150v mnepv breakers on my 240v dc direct dc water heater . Nothing has cooked yet.

Photonic Induction is back and I am just now watching him try to blow a 5000 amp fuse .
https://youtu.be/0mGhhdPgXG8

Larry

I just saw that P.I. was back on YouTube.   I have subscribed to him for a few years now.

Lots of good (and some bad) stuff on YT !




K7IQ 🌛  He/She/Me

ClassicCrazy

Quote from: boB on June 10, 2021, 12:43:46 PM
Quote from: ClassicCrazy on June 09, 2021, 11:46:56 PM
Quote from: boB on June 09, 2021, 11:27:40 PM
Yes, it was good.

Would like to see it using a 300V DC breaker.   I bet that works fine.

Another  good test might be be to wire a polarized DC breaker up backwards.  They don't work as well backwards

boB
I know I need to get a higher rated breaker but right now I am using one of those 150v mnepv breakers on my 240v dc direct dc water heater . Nothing has cooked yet.

Photonic Induction is back and I am just now watching him try to blow a 5000 amp fuse .
https://youtu.be/0mGhhdPgXG8

Larry

I just saw that P.I. was back on YouTube.   I have subscribed to him for a few years now.

Lots of good (and some bad) stuff on YT !

He makes Ryans test look like kindergarten stuff - ha ha !
system 1
Classic 150 , 5s3p  Kyocera 135watt , 12s Soneil 2v 540amp lead crystal for 24v pack , Outback 3524 inverter
system 2
 5s 135w Kyocero , 3s3p 270w Kyocera  to Classic 150 ,   8s Kyocera 225w to Hawkes Bay Jakiper 48v 15kwh LiFePO4 , Outback VFX 3648 inverter
system 3
KID / Brat portable