Solar-electric systems make electricity from sunlight. The generating devices rely on the photovoltaic (PV) effect—the capability of certain combinations of materials to use the energy
Learn More
Several methods exist for achieving redundancy in battery systems. Full redundancy is where one string or group of strings, capable of supporting the full specified load, is ''mirrored'' by another,
Learn More
A string is a string of battery cells connected pos to neg to pos to neg in series. Sort of like a string of xmas lights. Lead Acid battery cells produce 2 volts. If you want a 12 volt
Learn More
excess power can be used for battery charging. For example, in a single string system of 5700W DC installed power using an SE3800H inverter and connected battery, the excess
Learn More
Whenever possible, using a single string of lithium cells is usually the preferred configuration for a lithium ion battery pack as it is the lowest cost and simplest. However, sometimes it may be
Learn More
It is recommended to avoid string oversizing to reduce the potential for string-level clipping. Clipped string PV power occurs at 5700W for single-phase inverters, and at 11250W for three
Learn More
Inverters like the Sunny Boy TL-US, with dual maximum power point tracking channels and built-in string combiners make it easy for customers without south-facing roofs to
Learn More
A string consists of solar panels that are wired in a series set to one input on a solar string inverter. In case two or more solar panels are wired together, that is a solar / PV
Learn More
If your system uses a battery, we recommend installing two strings even if all the below rules are met, to allow maximizing battery charge and inverter production. Verify yield factor losses when
Learn More
Solar string inverters are used to convert the DC power output from a string of solar panels to an AC power. String inverters are commonly used in residential and smaller commercial
Learn MoreMost stationary battery systems spend more than 99% of their lives on float charge, so the main operational consideration is that the recommended float voltage be the same for each string. This allows strings of differing technology, but similar float voltage, to be mixed with each other in the same system.
Another consideration, particularly in low-voltage systems, is that internal ohmic measurements may become less accurate in paralleled systems. A parallel string represents an alternative current path or resistance to the cell or module being tested, thus introducing an error to the reading.
The absence of any theoretical limitation to the number of parallel strings is borne out by the experience of telecom operators, and at least one battery manufacturer allows up to 16 parallel strings, depending on system voltage.3
Contact us for competitive quotes on any of our inverters, PCS systems, and energy storage solutions
Get a Quote