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1 Scope and object This standard applies, when required by the relevant product standard, to low-voltage switchgear and controlgear hereinafter referred to as "equipment" or "device" and intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V...
This Practice covers minimum requirements for the maintenance of switchgear. While the maintenance procedures herein can be applied to all types of switchgear, manufacturer instructions should be reviewed for equipment specific maintenance requirements. This Practice does not cover...
This specification describes a high fire-point mineral oil based electrical insulating fluid, for use as a dielectric and cooling medium in new and existing power and distribution electrical apparatuses, such as transformers and switchgear. The material discussed here is miscible with other...
1.1 This specification covers rerefined previously used mineral insulating liquid of petroleum origin for reuse as an insulating and cooling medium in new and existing power and distribution electrical apparatus, such as transformers, regulators, reactors, liquid filled circuit breakers,...
1.1 These requirements apply to low-voltage AC power circuit breakers as follows: a) Stationary-mounted or drawout-mounted types, b) 2-pole, 3-pole, and 4-pole constructions, c) Manually operated or power operated, and d) With or without electromechanical or solid-state type trip device. 1.2 These...
1 Scope and object This part of IEC 60947 applies to control circuit devices and switching elements intended for controlling, signalling, interlocking, etc., of switchgear and controlgear. It applies to control circuit devices having a rated voltage not exceeding 1 000 V a.c. (at a frequency...
PURPOSE AND USE OF PROCESS INDUSTRY PRACTICES In an effort to minimize the cost of process industry facilities, this Practice has been prepared from the technical requirements in the existing standards of major industrial users, contractors, or standards organizations. By harmonizing these...
1.1 This specification covers less-flammable (high fire point) synthetic ester insulating liquids for use as a dielectric and cooling in new and existing electrical power apparatus including power and distribution transformers, switchgear, and other associated equipment 1.2 Synthetic ester...
1.1 This specification covers less-flammable (high fire point) synthetic ester insulating liquids for use as a dielectric and cooling in new and existing electrical power apparatus including power and distribution transformers, switchgear, and other associated equipment 1.2 Synthetic ester...
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...
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 controllers and...
This module is applicable to all stakeholders involved in the procurement of switchgear for 25 kV A.C. traction distribution systems. This module applies to all new and renewed, single pole and double pole 25 kV A.C. switchgear. This module also captures the requirements for bespoke...
1 Scope and object This part of IEC 60947 applies to inductive and capacitive proximity switches that sense the presence of metallic and/or non-metallic objects, ultrasonic proximity switches that sense the presence of sound reflecting objects, photoelectric proximity switches that sense the...
1.1 This part of IEC 60079 standard gives requirements for the design, construction, assessment, verification and marking of rooms used to protect internal equipment: - a located in a Zone 1 or Zone 2 or Zone 21 or Zone 22 explosive atmosphere (an area normally requiring an equipment protection...
This module is applicable to all stakeholders involved in the procurement of three phase HV switchgear. This module applies to all new and renewed 12 kV, 24 kV and 36 kV rated A.C. switchgear. This module also considers the use of 12 kV rated A.C. switchgear for 6.6 kV...
Includes: This instruction covers the routine maintenance of Hawker Sidderley Switchgear (HSS) Hawkgas 25 kV SMOS (structure mounted outdoor switchgear).
This standard consists of two distinctive scopes which have been subdivided between Modules A & B, as follows: • The scope of Module A covers the requirements related to HV switchgear used for distribution of 25 kV A.C. traction power supplies. • The scope of Module B covers the requirements...
