UL 935 BULLETIN

Abstract

Scope: This standard applies to lamp controlgear of the resistance, reactance, and electronic (solid state) types for use with electric discharge lamps that are intended to be installed or used on branch circuits of 600 V nominal or less, in accordance with the Canadian Electrical Code, Part I, Safety Standard for Electrical Installations, CSA C22.1 (CEC Part I); the Canadian Electrical Code, Part II, General Requirements, CSA C22.2 No. 0; the National Electrical Code (NEC), ANSI/NFPA 70; and La Norma de Instalaciones Electricas [Mexican Electrical Code (MEC)], NOM-001-SEDE. This Standard also applies to other auxiliary equipment associated with discharge lighting. This Standard does not apply to: a) Neon transformers or power supply sources covered by CSA C22.2 No. 255 and UL 2161; b) Power supplies for low voltage landscape lighting covered by CSA C22.2 No. 250.7 and UL 1838; and c) LED drivers, controllers, arrays, modules, or packages. This Part 1 is to be used in conjunction with the appropriate Part 2, which contains clauses to supplement or modify the corresponding clauses in this standard. In Mexico, this standard applies only to control devices with a single-phase or two-phase voltage of 2,000 V or less, based on that which is described in NOM-001-SEDE. The nominal supply voltage of these control devices includes one or more of the following: 120 V, 127 V, 220 V, 240 V, 254 V, 277 V, 440 V, and 480 V a.c. with momentary variances of ±10%, 60 Hz and 24 V d.c. This standard also applies to electronic control devices that can operate on a continuous range of supply voltages, as long as this range includes one or more of the voltages mentioned above. In Canada and the United States, this requirement does not apply. In Mexico, for multi-voltage or multi-terminal control devices, specifications are verified at the voltage indicated by the corresponding test method. In Canada and the United States, this requirement does not apply.