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1.1 These requirements cover automatic and non-automatic (manual) transfer switch equipment, operating at 600 V ac less, and intended for installation in a meter base, in ordinary locations only. 1.2 These devices are intended for use in optional standby systems only, and are not intended...
1.1 These requirements cover electrically operated single and multiple station carbon monoxide (CO) alarms intended for protection in ordinary indoor locations and unconditioned areas, per applicable governing laws, codes, and standards. This includes, but is not limited to, of dwelling...
1.1 These requirements cover indoor use cord and plug connected of permanently connected, furniture power distribution units (FPDU) rated 250 V AC or less and 20 Amperes or less. An FPDU may provide one or more receptacle outlets, inclusive of one current tap integral to the attachment plug, if...
1.1 These requirements cover indoor use cord and plug connected, relocatable power taps (RPT) rated 250 V AC or less and 20 Amperes or less. A RPT may include an integral Class 2 power supply with an integral lead and/or connector(s) output. In accordance with the National Electric Code, NFPA 70,...
This specification applies to the electrical systems aspects of airworthiness and design for "small" aircraft. It establishes the Aircraft Type Code (ATC) compliance matrix based on airworthiness level, number of engines, type of engine(s), stall speed, cruise speed, meteorological conditions,...
This specification establishes the performance requirements for surge suppressors used on shipboard ac power circuits that may consist of a single circuit element or may be a hybrid device using several suppression devices. The surge suppressor shall be a protective...
1.1 This Standard sets forth requirements for smoke detectors and accessories, including mechanical guards to be employed in ordinary indoor locations in accordance with the following: a) In Canada only: 1) Standard for the Installation of Fire Alarm Systems, ULC-S524; 2) National Building Code of...
This part of IEC 60947 applies to the types of equipment listed in 1 and 2 whose main contacts are intended to be connected to circuits the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c. Starters and/or contactors dealt with in this standard are not normally designed to...
1.1 These requirements apply to: a) Central-stations providing Central-Station Fire-Alarm Service and that may monitor Remote Supervising Station System type fire-alarm systems (OBJ2) as described in the National Fire Alarm and Signaling Code, NFPA 72; b) Central-station burglar-alarm systems...
1.1 This practice provides ergonomic design criteria from a human-machine perspective for the design and construction of maritime vessels and structures and for equipment, systems, and subsystems contained therein, including vendor-purchased hardware and software. 1.1.1 The focus of these design...
This standard applies to a.c. semiconductor motor controllers and starters, which may include a series mechanical switching device, intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. This standard characterizes a.c. semiconductor motor...
1.1 This standard applies to the following types of transfer switches that have a maximum rating of 1000 volts for use in non-hazardous locations, in accordance with Annex A1, Item 1: a) Automatic transfer switches; b) Manual or non-automatic transfer switches; c) Closed transition transfer...
Local Burglar Alarm Units and Systems UL 609 1.1 These requirements cover construction, performance, and maintenance of local burglar-alarm units and systems for use in mercantile premises, mercantile safes and vaults, and bank safes and vaults. 1.2 As covered by these requirements, a local alarm...
This International Standard applies to connectors for use in the d.c. circuits of photovoltaic systems according to class II of IEC 61140:2001 with rated voltages up to 1 500 V d.c. and rated currents up to 125 A per contact. This standard applies to connectors without breaking capacity but...
This specification covers acceptance testing of rubber insulating covers for use as portable protective devices for protection of workers from accidental contact with live electrical conductors, apparatus, or circuits. It includes insulator hoods, dead-end protectors, line hose...
1.1 DE This part of IEC 60079, which is a technical specification, document specifies requirements for the construction, marking and documenting of apparatus, systems and installations for use with the 2-Wire Intrinsically Safe Ethernet concept (2-WISE), such as the physical layer specification for...
