 Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me. |
Forum Index : Solar : Gas Arrestor/Fuse
| Author | Message | ||||
| M Del Senior Member  Joined: 09/04/2012 Location: AustraliaPosts: 155 |
Hi guys I am getting closer to a decision on my off grid system to compliment my small grid connect system. Evetually hope to go off grid. However my background/knowledge is more 12/24/48 volt car/truck forklift etc. I will do most of the fitting, mounting, bolting, cable running etc and will have the connections and 240 volt stuff etc done by an electrician. I have read here and elsewhere about gas arrestors, 48v, 90v etc. My knowledge of them is petty non existent, but a lot of people mention their use. I have searched google etc, but am still none wiser. (bad searches  ?)
Can someone please explain what they are and how they work. cheers Mark Mark |
||||
yahoo2 Guru  Joined: 05/04/2011 Location: AustraliaPosts: 1166 |
do you mean surge protection device (SPD) this is a MOV style device there are also gas discharge style units. or arc fault detection or DC switches, fuses and circuit breakers designed to snuff out a plasma arc. example I'm confused, no wait... maybe I'm not... |
||||
| M Del Senior Member Joined: 09/04/2012 Location: AustraliaPosts: 155 |
Hi Yahoo, not sure what they are. They are mentioned in Glens build from July 12 There is mention of them coming off a Krone block, also never heard of them. There is a picture of the lunch box, circuit board, fuses, diodes, LEDs etc. But the gas arrestors escape me. Guess i should have jumped into that thread at the time and asked. Mark Mark |
||||
| yahoo2 Guru Joined: 05/04/2011 Location: AustraliaPosts: 1166 |
its basically a surge protection device to protect your gear from a voltage spike. Could be from induction in the wires from lightning, relay coils, electric motors starter motors etc, etc, etc. I am a fan of the Metal Oxide Varistor (MOV) I call em lollypops. The lightning arrestor will have a clump of these soldered to a circuit board, they are colour coded to the voltage that they start to clamp from. The bigger they are, the more grunt they handle. 
Glenn was referring to a gas discharge tube, over a certain voltage a gas is given off (ionised) that decreases the resistance running to an earth leg and sheds the excess energy until the voltage returns to normal. I think Glenn's were a two wire version, but you get the idea. 
I'm confused, no wait... maybe I'm not... |
||||
norcold Guru Joined: 06/02/2011 Location: AustraliaPosts: 670 |
http://www.novaris.com.au/power/index.shtml My system (off-grid solar-48v 1008ahr batteries-240v inverter) has 3 such devices from the above Maufacturer. SDD2-50-200-DC & SD1-40DIN/LVA-48 on the 48v side SD1-40DIN/3 on the 240v side. They were installed as requirements under the Govt. Rural Solar Subsidy Scheme. They have a small green LED continuous light that apparently will go out should they fail. We come from the land downunder. Vic |
||||
| M Del Senior Member Joined: 09/04/2012 Location: AustraliaPosts: 155 |
Thanks for the info guys  . As a mechanic 12/48 volt I have never come across them.
I have used veh mounted inverters, chargers, battery banks etc over the years and helped the elecos wire up base camps etc running off generators. Even carried out repairs on the gen sets. The finer side of the electronics however has never been more than a poor cousin. Seems the more I learn, the more I have yet to learn. Hope I keep learning for another hundred years. Yet still more study required. cheers Mark Mark |
||||
 Print this page |
