UL 87 2019 pdf download – Power-Operated Dispensing Devices for Petroleum Products.
3.5 DISPENSER, REMOTE-CONTROL TYPE – A dispensing device that does not contain a power-operated pump as part of the assembly, and which is intended for connection to a fluid piping system containing the power operated pumps at a remote location. Also commonly identified as a ″dispenser.″ 3.6 DISPENSER, SELF-CONTAINED – A dispensing device that includes a power operated pump as part of the assembly. Also commonly identified as a ″pump″ or ″suction dispenser.″ 3.7 DISPENSING DEVICE – A product consisting of various components as applicable, which are used to control and meter the flow of liquid from an upstream storage device. 3.8 ELECTRICAL CIRCUITS – a) High-Voltage Circuit – A circuit involving a potential of not more than 600 volts and having circuit characteristics in excess of those of a low-voltage or Class 2 circuit. b) Low-Voltage Circuit – A circuit involving a potential of not more than 30 volts alternating- current (rms) (42.4 volts peak or direct current) and 1) Supplied by a Class 2 transformer, or by a battery, by a battery and fixed impedance, or by a transformer and fixed impedance each of which, as a unit, is in compliance with what is required for a Class 2 transformer or 2) Limited to a maximum of 100 volt-amperes. A circuit derived from a source of supply classified as a high-voltage circuit, by connecting resistance in series with the supply circuit as a means of limiting the voltage and current, is not considered to be a low-voltage circuit. c) Intrinsically Safe Circuit – A circuit incapable of releasing sufficient electrical energy under normal or abnormal conditions to cause ignition of a specific hazardous atmospheric mixture. Abnormal conditions include unintentional damage to any part of the equipment or wiring, insulation or other malfunction of electrical components, application of overvoltage, adjustment and maintenance operations, and other similar conditions.