H6 Hybrid Inverter - Installation & Operation Guide
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• PV System: Describes the totality of devices required for the exploitation and utilization
of solar energy. Sometimes, it includes not only the PV array, but also the SolarCity H6
inverter.
• Self-Discharge: Loss of battery charge while it is stored or not used. A higher ambient
temperature has a strong influence on self-discharge.
• SOC: State of Charge (also called State of Energy). It describes the current amount of
charge that can be drawn from the battery pack, in percent of the nominal capacity (e.g.,
100% = battery full, 0% = battery empty).
• Split-Phase: A split-phase system is a three-conductor single-phase distribution system,
commonly used in North America, for residential and light commercial applications. Its
primary advantage is that it saves conductor material since a single-phase system with
one neutral conductor is used, while on the supply side of the grid configuration only one
line conductor is necessary. Since there are two live conductors in the system, it is
sometimes incorrectly referred to as “two-phase system”. To avoid confusion with split-
phase applications, it would be correct to call this power distribution system a three-
conductor, single-phase, mid-point, neutral system.
• String: Describes a group of electrical series-connected PV modules. A PV system usually
consists of a number of strings, which avoids yield losses due to variations in shading over
different modules.
• UL: Abbreviation for Underwriters Laboratory, a non-profit organization that sets
standards for different product categories and tests products to make sure they meet the
safety standards.
• VOC: Open Circuit Voltage.
• ZigBee: Open, global wireless communication standard used for communications
between the SolarCity H6 inverter and the SolarCity monitoring infrastructure.
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