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 24v pack , Outback 3524 inverter
 5s 135w Kyocero , 3s3p 270w Kyocera   Classic 150 ,8s2p  Kyocera 225w to Hawkes Bay Jakiper 48v 20kwh  ,Gobel 16 kwh  lifepo4 Outback VFX 3648  8s2p 380w Rec pv EG4 6000XP

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 24v pack , Outback 3524 inverter
 5s 135w Kyocero , 3s3p 270w Kyocera   Classic 150 ,8s2p  Kyocera 225w to Hawkes Bay Jakiper 48v 20kwh  ,Gobel 16 kwh  lifepo4 Outback VFX 3648  8s2p 380w Rec pv EG4 6000XP

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 24v pack , Outback 3524 inverter
 5s 135w Kyocero , 3s3p 270w Kyocera   Classic 150 ,8s2p  Kyocera 225w to Hawkes Bay Jakiper 48v 20kwh  ,Gobel 16 kwh  lifepo4 Outback VFX 3648  8s2p 380w Rec pv EG4 6000XP