Guru
Joined: 13/10/2014
Location: AustraliaPosts: 1848
| Posted: 12:28am 07 May 2024 |
You only need one Kilovac to disconnect the Solar charges from the Battery, the idea is to protect the battery and inverter, one kilovac and one $16 voltage detectors will do that.
I understand the problem with some Solar regulators having a fit when the output is suddenly disconnected - I have never had that problem with mine and I would have done that countless times over the years, and still do when testing, the thing is, it should only happen with a big over voltage incident - that should NEVER happen!
The voltage trip must not be set too low, some Solar regulators can over voltage a "little" if the you get a Solar array flare under certian conditions. But it can be worse, and I have seen this many times and repaired many commercial solar regulators because of this strange flare event under fast moving cloud and high load conditions, and even low flying aircraft causing a sudden shadow then full sun - I have witnessed four solar regulators all fail [blown FETS] at once from that Aircraft event.
You cannot use an automotive relay, and especially not on the Solar array outputs, it will be destroyed by arching. The Kilovac is gas filled and sealed for this very reason, it can take hundreds of volts and currents in the hundreds of amperes on break.