UL 458-2009 pdf download

UL 458-2009 pdf download.Power Converters/Inverters and Power Converter/Inverter Systems for Land Vehicles and Marine Crafts.
2 Glossary 2.1 For the purpose of this standard the following definitions apply. 2.2 ACCESSIBLE PART – A part located so that it can be contacted by a person, either directly or by means of a probe or tool during user servicing, or that is not recessed the required distance behind an opening. 2.3 BARRIER – A partition for the insulation or isolation of electric circuits, for the isolation of electric arcs, or for isolation of moving parts or hot surfaces. In this respect, a barrier may serve as a portion of an enclosure or as a functional part. 2.4 BRANCH CIRCUIT – That portion of the wiring system beyond the final overcurrent protecting device on the power-distribution panel protecting the circuit to the output. 2.4.1 CIGARETTE LIGHTER CONNECTOR – The male connector provided as part of a vehicle battery adapter for insertion into a cigarette lighter receptacle or a power outlet. 2.4.1 added January 30, 2009 2.5 CLASS 2 TRANSFORMER – A step-down, isolation type transformer having a secondary voltage of not more than 30 Vrms (42.4 peak) under any condition of loading including open circuit and complying with the applicable requirements in the Standard for Class 2 and Class 3 Transformers, UL 1 585. 2.6 CONTROL CIRCUIT – A circuit that carries electric signals directing the performance of a controller that, in turn, governs power delivered to a motor or other load in the equipment. A control circuit does not carry main power current.
2.7 ENCLOSURE – That portion of a unit that reduces the accessibility and unintentional contact of a part that may involve a risk of fire, electric shock or injury to persons, or reduces the risk of propagation of flame, sparks, and molten metal initiated by an electrical disturbance occurring within. 2.8 FIELD-WIRING LEAD – Any lead to which a supply, load or other wire is intended to be connected by an installer. 2.9 FIELD-WIRING TERMINAL – Any terminal to which a supply or other wire is intended to be connected by an installer in the field is a field-wiring terminal unless the wire is provided as part of the product and a pressure terminal, connector, soldering lug, soldered loop, crimped eyelet, or other means for making the connection is factory-assembled to the wire. 2.1 0 FIXED UNIT – A unit that is intended to be permanently connected electrically. 2.1 1 FLUSH-WALL-MOUNTED UNITS – Units that are intended to be recessed in a wall. 2.1 2 LIMITED-ENERGY CIRCUIT – A circuit having a voltage not exceeding 1 000 V and the energy limited to 1 00 VA by a secondary winding of a transformer, or a fixed impedance. 2.1 3 LIVE PART – Denotes metal or conductive parts that, during intended use, have a potential difference with respect to ground or any other conductive part.
2.1 5 PORTABLE POWER INVERTER – A power inverter that has no provisions for permanent mounting or wiring, and can be easily carried or conveyed by hand. 2.1 6 POWER-CONVERTER OR POWER-INVERTER SYSTEM – An integral combination of a converter or inverter, power-supply assembly, branch-circuit breakers, grounding bar, marking, and the like, that are necessary for a complete installation. 2.1 7 POWER SUPPLY ASSEMBLY – Conductors, including grounding conductors insulated from each other, connectors, attachment plugs, and all other fittings, grommets, or devices installed for the purpose of delivering energy from a source of supply to a power-converter or inverter system of a land vehicle or marine craft. 2.1 8 PRESSURE TERMINAL CONNECTOR – A field wiring terminal that accomplishes the connection of one or more conductors by means of pressure without the use of solder. A pressure terminal connector may be the barrel and set screw type, crimp type barrel, or clamping plate and screw type. 2.1 9 PRIMARY CIRCUIT – Wiring and components that are conductively connected to a branch circuit or an alternating-current motor generator set installed separately from, or included as, a part of a power-converter or power-inverter system. 2.20 PRINTED WIRING BOARD – The finished combination of a pattern of conductive paths either on, in, or both on and in (multilayer) a sheet of insulating material, including printed components, and the base material.UL 458-2009 pdf download