DIY 230vac adjustable power limiter

Xringer · 10-30-11, 10:08 AM

Hi Rex,
I just looked at some of your recent posts over on wind-sun. Wow, that's a big system!

Anyways, SSRs from China work the same as the SSRs I've used at work.
Bolt them down on some metal and they run pretty cool. I've never had one fail.

The current sensors aren't cheap, but you can find them on Ebay.
VERIS H735 CURRENT SENSOR/ RELAY HAWKEYE 735 | eBay

I just picked up a spare current sensor last week.

Have you seen IOTA auto-change-over relays??
http://ecorenovator.org/forum/solar-...er-switch.html
I'm using some and they work nice. But, they are a bit slow when De-energizing.

I think a 240vac line can be switched much faster using four SSRs.
But, the DC control signals into the SSRs have to be very well controlled, and super reliable.
(To avoid a short).

I'm switching just one line of 240vac in my Sanyo #2 since it does not use any 120.. Just 240.
Two SSRs weren't necessary, to mimic the Sanyo power control relay setup.

~~~
I really like those Enphase inverters and I'm thinking of buying one or two,
M210 units to experiment with..

Cheers,
Rich

10-30-11, 10:08 AM	#11
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Hi Rex, I just looked at some of your recent posts over on wind-sun. Wow, that's a big system! Anyways, SSRs from China work the same as the SSRs I've used at work. Bolt them down on some metal and they run pretty cool. I've never had one fail. The current sensors aren't cheap, but you can find them on Ebay. VERIS H735 CURRENT SENSOR/ RELAY HAWKEYE 735 \| eBay I just picked up a spare current sensor last week. Have you seen IOTA auto-change-over relays?? http://ecorenovator.org/forum/solar-...er-switch.html I'm using some and they work nice. But, they are a bit slow when De-energizing. I think a 240vac line can be switched much faster using four SSRs. But, the DC control signals into the SSRs have to be very well controlled, and super reliable. (To avoid a short). I'm switching just one line of 240vac in my Sanyo #2 since it does not use any 120.. Just 240. Two SSRs weren't necessary, to mimic the Sanyo power control relay setup. ~~~ I really like those Enphase inverters and I'm thinking of buying one or two, M210 units to experiment with.. Cheers, Rich