UL-2272:2016 pdf free download – STANDARD FOR SAFETY ANSI/CAN/UL-2272:2016, Electrical Systems for Personal E-Mobility Devices.
6.12 ELECTRICAL SYSTEM — All of the electrical components and circuits that are provided with the personal e-mobility device and would include the electrical drive train system, the internal or external charger used to recharge the battery and auxiliary electrical systems such as lighting, communications and audio that may be provided on the device.
6.13 ELECTROLYTE LEAKAGE — A condition where liquid electrolyte escapes through an opening in a designed vent as well as through a rupture or crack or other unintended opening in the casing or enclosure of a cell or capacitor and is visible external to the DUT.
6.14 ENCLOSURE — The outer cover of a device that provides protection to its contents to prevent a potential hazard, and may have one or more specific levels of protection as noted below:
a) ELECTRICAL ENCLOSURE — Provides protection from access to hazardous voltage circuits and may serve as part of the electrical insulation.
b) FIRE ENCLOSURE — Provides protection from the spread of fire from components within.
c) MECHANICAL ENCLOSURE — Provides physical protection from damage to components and parts contained within and/or prevents access to hazardous moving parts.
d) ENVIRONMENTAL ENCLOSURE — Provides protection from ingress of materials from the environment such as water that could damage internal components or introduce hazards. A rating such as the IP code provides the level of protection given by the enclosure.
6.15 END-OF-DISCHARGE VOLTAGE (EODV) — The voltage, under load, of the cell or battery at the end of discharge. The EODV may be specified, as in the case of a voltage terminated discharge, or simply measured in the case of a time-controlled discharge.
6.16 EXPLOSION — A violent release of energy that produces projectiles or an energy wave from the DUT and results in the DUT’s contents being forcibly expelled through a rupture in the enclosure or casing.
6.17 FIRE — The sustained combustion of the DUT’s contents as evidenced by flame, heat and charring or other damage of materials.
6.18 FULLY CHARGED — A battery which has been charged per the manufacturer’s specifications to its full state of charge (SOC).
6.19 FULLY DISCHARGED — A battery, which has been discharged, according to the manufacturer’s specifications, to its specified end of discharge voltage (EODV).
6.20 HAZARDOUS VOLTAGE — Voltage exceeding 30 Vrms/42.4 Vac peak or 60 Vdc.
6.21 INSULATION LEVELS — The following are levels of electrical insulation:
a) BASIC — A single level of insulation that provides protection against electric shock. Basic insulation alone may not provide protection from electric shock in the event of a failure of the insulation.
b) DOUBLE INSULATION — Insulation comprising both basic insulation and supplementary insulation.
c) FUNCTIONAL INSULATION — Insulation that is necessary only for the correct functioning of the equipment. Functional insulation by definition does not protect against electric shock. It may, however, reduce the likelihood of ignition and fire.
d) REINFORCED INSULATION — Single insulation system that provides a degree of protection against electric shock equivalent to double insulation under the conditions specified in this standard. The term “insulation system” does not imply that the insulation has to be in one homogeneous piece. It may comprise several layers that cannot be tested as basic insulation and supplementary insulation.
e) SUPPLEMENTARY INSULATION — Independent insulation applied in addition to basic insulation in order to reduce the risk of electric shock in the event of a failure of the basic insulation.