Quote:
Originally Posted by arctictraveller
What's the point of that? I would think that 110V at the panel input would be the same no matter where it came from, with no need for another transfer switch. I know that some inverters have a circuit that will start the generator once the battery voltage reaches a certain point, is that what you are talking about?
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Jeff, the Samlex EVO units have three non-battery inputs and manages amongst those. (This is not your father's inverter, lol!) The three are SHORE, GEN, and SOLAR. Bit of overkill for our van but whatever. For a boat or large RV, solar array at home with battery backup, or for backup power this would be the ticket. For JWA's application this unit is clearly not necessary.
From Samlex:
AC Inputs
Two separate AC inputs – one for grid (priority #1), one for generator (priority #2), connect simultaneously, no need to reconfigure when different power sources are available.
Generator Input is specifically designed to have more tolerance for wave form distortion, prevents unnecessary “rejection of AC input and switch to inverter” by tolerating distorted wave forms that can be produced by gritty generators
Each AC input is programmable for voltage and frequency. User determines what the min and max thresholds are to switch from Grid or Generator to Inverter.
Generator start can be initiated by “Status Relay” contact, can be programmed to activate when grid is lost.
Solar Input
Connect a solar
charge controller directly to the EVO though the Battery Charger external DC Input, seamlessly integrates solar charging into the EVO’s power system.
ONLINE Mode can be
used to prioritize Batteries/Inverter over the grid, ideal for those wishing to operate primarily on solar power (when the grid is available, but might be costly).
Transfer Switch
Zero transfer time when switching from Inverter to Grid. When grid comes on, the inverter synchronizes with the wave form and then transfers instantly at zero crossing.
<16ms transfer when going from Grid to Inverter. When grid is lost, the transfer relay switches to inverter at the correct place in the wave form, the transfer takes less than 16ms.
Battery Charger
3 or 4 stage charging with Equalization (must be manually initiated).
Adaptive algorithm is used during Bulk to assess the condition of the battery. Subsequent stages are then based on the condition of the battery rather than pre-set time periods for Absorption and Float. Prevents unnecessary charging, extends the life of batteries.
Programmable – set battery voltage thresholds to initiate charging.
State-of-the-Art Technology
The EVO operates at 165 million instructions per second producing lightning fast load and response times
The EVO is practically indestructible. It has “Bullet-Proof Intelligence” in the form of 9 physical points of protection monitoring being scanned up to 10,000 times per second for adverse conditions. The EVO will detect fault conditions and initiate a healthy shutdown before any product damage can be done.
The EVO-RC remote control (sold separately) can be used to capture detailed EVO performance data. Records all detected faults and the conditions leading up to them. Data is stored on a removable 16GB SD Card (in the remote). Use data to analyze trends for more efficient use of system resources
The EVO uses five temperature sensors placed throughout the unit to determine operation of 2 speed controlled cooling fans. Reduces unnecessary fan noise and energy consumption by only running when and where the fans are needed.