Recent content by pocho

you will have current that neutralise any asymmetry in your load - in your case that is 1 load on A and B each. which is equal to 1 load on C if you think about vectors (absolute value). you will have 2 (kVA) / 0,22 (kV) = cca 10 A in neutral.

trough 30 A connector you will have 40 A current, this is not good idea.

he needs precision :) your idea is fine. also you don't have to worry about overheating as long you are below rated power of your mid-circuit equipment. rated power can be delivered constantly, by definition.

if LED always "eats" 2 V on every current, other 7 V will have to be dissipated on internal resistance. current will rise until IxR_internal=7 V. on battery terminals you will actually measure 2 V, same as on diode terminals. this will be a large current which will destroy your LED in short...

etap can do it http://etap.com/index.htm also ABB NEPLAN, maybe, seek confirmation from someone else.

since you are going to be connected to a grid I think most suitable would be asynchronous generator: mainly because it is cheap - you don't need excitation system, the grid will provide excitation. it is same machine as motor, all you need is to spin it above its "synchronous speed" and power...

hello, take a look on this link: http://www.energy.siemens.com/hq/pool/hq/energy-topics/power%20engineering%20guide/PEG_70_KAP_03.pdf you have some typical single line diagrams for substations.main link to Guide...

thank you gtacs. this is a good resource. manufacturers documents are a bit confusing, i checked Sonnenschein and EnerSys websites. it seems that "boost" treatment is not needed for VRLA. that is fine with me, because i had some trouble with overvoltages: boost_voltage x number_of_cells >...

hello, pozdrav my question is about Valve Regulated Lead Acid battery. may i charge it only with "float" voltage (cca 2,25 Vpc) or do i have to "boost" it (2,4 Vpc) sometimes? if my battery gets discharged to 20% can i recharge it only with "float" voltage? i have capacity cca 150Ah...