Regular Member
Joined: 01/09/2020
Location: AustraliaPosts: 47
| Posted: 11:41pm 20 Oct 2020 |
I'm curious how others are controlling the connect/disconnect of their dump load.
I don't want to spend hundreds of dollars so I've purchased a cheap prebuilt adjustable voltage sensing relay and piggy backed it to a dual battery relay which runs a few other devices upwards of 13.3v
I've had a lot of reliability with other cheaply sourced prebuilt modules (eg. step up/down converters, 12v remote switches, temperature controlled relays), so I thought I would try it out.
I have set mine to dump @ 14.6v (not sure what is ideal) but due to limitations of my hardware am not able to set a disconnect voltage higher than 12.8v - I would like perhaps 13.5-14v disconnect (again not sure what is ideal), the bank in question is sealed lead acid/agm.
I've seen a dump load relay (and heater) kit on ebay which connects at 15v and disconnects at 14.95v. I didn't like the idea of that. I would think that the moment the load powers up it would immediately disconnect from the voltage sag.
The turbine is just a cheap 400watter which I'm experimenting with.
Edited 2020-10-21 09:51 by pollenface
Newbie
Joined: 09/11/2012
Location: United StatesPosts: 3
| Posted: 04:36pm 02 Dec 2020 |
Do you have a URL Link to your Dual Battery Relay, or an equivalent ?
Is it a Mechanical Relay or a Solid State Relay?
Regular Member
Joined: 01/09/2020
Location: AustraliaPosts: 47
| Posted: 03:30am 11 Dec 2020 |
Hey, Good news, both adjustable relays I bought failed.
Everything powered up but the relay wouldn't engage at the "set" point.
I'm now leaning towards the idea of spending hundreds of dollars on a PWM or microprocessor controlled system.