HD 348 S7:1998

HD 348 S7:1998 is a standardization document published by CLC. Its full title is "High-voltage alternating-current circuit-breakers". This standard covers: Applies to a.c. circuit-breakers designed for indoor or outdoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1 000 V. Applies only to three-pole circuit-breakers for use in three-phase systems and single-pole circuit-breakers for use in single-phase systems. Two-pole circuit-breakers for use in single-phase systems are subject to agreement between manufacturer and user. Also applies to the operating devices of circuit-breakers and their auxiliary equipment. However, circuit-breakers with a closing mechanism for dependent manual operation are not covered since a rated short-circuit-making current cannot be specified, and dependent manual operation may be objectionable because of safety considerations. Does not cover circuit-breakers intended for use on motive power units of electrical traction equipment, or circuit-breakers for use with overhead lines which include series capacitors.

Applies to a.c. circuit-breakers designed for indoor or outdoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1 000 V. Applies only to three-pole circuit-breakers for use in three-phase systems and single-pole circuit-breakers for use in single-phase systems. Two-pole circuit-breakers for use in single-phase systems are subject to agreement between manufacturer and user. Also applies to the operating devices of circuit-breakers and their auxiliary equipment. However, circuit-breakers with a closing mechanism for dependent manual operation are not covered since a rated short-circuit-making current cannot be specified, and dependent manual operation may be objectionable because of safety considerations. Does not cover circuit-breakers intended for use on motive power units of electrical traction equipment, or circuit-breakers for use with overhead lines which include series capacitors.

HD 348 S7:1998 is classified under the following ICS (International Classification for Standards) categories: 29.120.40 - Switches. The ICS classification helps identify the subject area and facilitates finding related standards.

HD 348 S7:1998 has the following relationships with other standards: It is inter standard links to EN 62271-100:2001, IEC 60050-604:1987, IEC 60050-441:1984, EN 13702-1:2003, EN ISO 3680:2004, EN 60068-2-5:1999, EN 60044-8:2002, EN 61166:1993, EN 60282-1:1996, EN 60265-1:1998, EN 60427:1992, EN 60143-2:1994, EN 60427:2000, EN 61116:1994, EN 60044-6:1999. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

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