Into the Guts of DC Breakers--Are They OK as PV Disconnect Switches скачать в хорошем качестве

Into the Guts of DC Breakers--Are They OK as PV Disconnect Switches

Recently Will Prowse surprised me by commenting that a small ganged DC breaker was a good solar disconnect for series PV panels. I've been telling people for a long time that breakers shouldn't be used as switches. But these particular breakers are actually sold as disconnects so I thought I should dig deeper into the issue. So I bought some and ruined them by taking them apart. The next video in this two part series will look at the guts of a more traditional rotary DC disconnect switch, when I ruin one of them. Here's a link to the breakers I took apart. I bought the 400VDC/30Amps. They are a nice piece of equipment, sort of. I wouldn't use them closer than 50% or rating, but they should work fine for moderate voltages: https://amzn.to/4gVLXGz They also sell a 1000V/30A version that I've ordered just to see what's different: https://amzn.to/3W3gt9E And here's the solar disconnect switch I'll be disemboweling as soon as it shows up in the mail: 1200VDC/32A four pole. https://amzn.to/40cAQnd Product Links to other stuff I like and am testing. All links are affiliate links that we earn a commission from. There is no extra charge for you at all but it helps support our channel. Inverters Off-Grid EG4 6000XP Off-Grid 120/240V Split Phase All-In-One Solar Inverter https://signaturesolar.com/eg4-6000xp... EG4 3kW Off-Grid Inverter 3000W Output https://signaturesolar.com/eg4-3kw-of... Hybrid EG4 18kPV Hybrid Inverter Split Phase 120/240VAC UL1741, CEC https://signaturesolar.com/eg4-18kpv-... EG4 12kPV Hybrid Inverter 12000W Input, 8000W Output, 120/240V Split Phase similar to the 18KPV and the same versatility for $1500 less. https://signaturesolar.com/eg4-12kpv-... EG4 Flexboss21—more power than the 18K but requires the gridboss for grid connection. Cheaper than an 18K for for large off-grid. Up to three Flexboss’ can be connected to one gridboss for large installations. No support for 3 phase. https://signaturesolar.com/eg4-flexbo... Batteries Other 48V solutions, particularly rack mount systems, are more suitable for smaller installations or installations where smaller units of modularity is beneficial, but for me the lower cost per KWh, ease of installation, ability to scale rapidly, and appearance made wall mount batteries preferable. Wallmount: EG4 PowerPro Wall Mount All Weather 48V 280Ah 14.3kWh LiFePO4 Lithium Battery. https://signaturesolar.com/eg4-powerp... EG4-WallMount Indoor Battery 48V 280Ah 14.3kWh Indoor Heated UL1973, UL9540A | 10-Year Warranty. $300 cheaper than the all weather model. https://signaturesolar.com/eg4-wallmo... Server rack: EG4 LL-S Lithium Battery | 48V 100AH | Server Rack Battery | UL1973, UL9540A | 10-Year Warranty Fire arrestors inside and EMP-hardened https://signaturesolar.com/eg4-ll-s-l... PV Panels We’ll be buying these next: https://signaturesolar.com/preorder-a... For managing the wiring we are using the EG4 PowerPro Conduit Box which fits perfectly between the 18K inverter and both styles of wallmount battery: https://signaturesolar.com/eg4-powerp... To connect the batteries in parallel we are adding EG4 paralleling cable: https://signaturesolar.com/eg4-powerp... Mounts EG4's Brightmount is one of the best groundmounts we've tried: https://signaturesolar.com/eg4-bright...