I am reviewing the Samlex, Magnum, and Victron offerings in order to understand the difference between low frequency and high frequency types. I hope to have a rough guideline for comparing the surge ability thus a rule of thumb to adjust their wattages (e.g. maybe a 3000w HF is similar to a 2000w LF).
Also, I am trying to get a feel for what the charge circuit and logic costs. My theory is that without lead acid requirements, the charger is much simpler and thus less costly.
(I am not interested in transfer switch (2 AC inputs), continuous power during switch over, combining of the AC loads, prioritizing the different loads)
--------Samlex
Samlex has gaps in their line, for example there is no 3000w 24v inverter/charger, but they have a 3000w 24v inverter.
PST-2000-24 is about $600 (just an inverter)
EVO-2224 is about $1100 (2 AC input, inverter, charger)
Both are 2000w 24v and thus this supports my belief that the charger and associated logic for dealing with lead acid is not a trivial addition to an inverter, although the EVO has a transfer switch too.
Samlex has a PST-3000-24 for about $850.
-----------Magnum
Magnum has:
MS2024, inverter charger: $1500 but this is a low frequency type that puts out 8000watts at 1ms and 4000 watts at 100ms
High frequency csw2024 inverter only: $700 has a max surge of 4000watts (I assume this is equivalent to the 1ms. Their spec sheets seem to detail the surge power of the LF units but just list the max for the HF units.)
They don't have a HF 3000w 24v inverter that I can compare the cost to the LF 2000w. I suspect these would have more comparable surge capabilities.
-----------Victron
They don't really have any high watt 24v inverters for 110v. The big Phoenix units are 220v. So I am unable to learn much from Victron's offerings. Either I replace my multiplus compact with the multiplus, or I don't get victron
---------------Summary
My impression is that to start a fridge and AC units, the 3000w cheap ones would be similar in performance to the 2000w low frequency units, but sadly, as soon as you get up in price, they throw in the damn charger which elevates the cost even more
I will see if I can find similar stuff from the chinese units
Also, I am trying to get a feel for what the charge circuit and logic costs. My theory is that without lead acid requirements, the charger is much simpler and thus less costly.
(I am not interested in transfer switch (2 AC inputs), continuous power during switch over, combining of the AC loads, prioritizing the different loads)
--------Samlex
Samlex has gaps in their line, for example there is no 3000w 24v inverter/charger, but they have a 3000w 24v inverter.
PST-2000-24 is about $600 (just an inverter)
EVO-2224 is about $1100 (2 AC input, inverter, charger)
Both are 2000w 24v and thus this supports my belief that the charger and associated logic for dealing with lead acid is not a trivial addition to an inverter, although the EVO has a transfer switch too.
Samlex has a PST-3000-24 for about $850.
-----------Magnum
Magnum has:
MS2024, inverter charger: $1500 but this is a low frequency type that puts out 8000watts at 1ms and 4000 watts at 100ms
High frequency csw2024 inverter only: $700 has a max surge of 4000watts (I assume this is equivalent to the 1ms. Their spec sheets seem to detail the surge power of the LF units but just list the max for the HF units.)
They don't have a HF 3000w 24v inverter that I can compare the cost to the LF 2000w. I suspect these would have more comparable surge capabilities.
-----------Victron
They don't really have any high watt 24v inverters for 110v. The big Phoenix units are 220v. So I am unable to learn much from Victron's offerings. Either I replace my multiplus compact with the multiplus, or I don't get victron
---------------Summary
My impression is that to start a fridge and AC units, the 3000w cheap ones would be similar in performance to the 2000w low frequency units, but sadly, as soon as you get up in price, they throw in the damn charger which elevates the cost even more
I will see if I can find similar stuff from the chinese units