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IEC/TR 62271-300

High-voltage switchgear and controlgear – Part 300: Seismic qualification of alternating current circuit-breakers

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Organization: IEC
Publication Date: 1 November 2006
Status: active
Page Count: 58
ICS Code (High voltage switchgear and controlgear): 29.130.10
scope:

Scope and object

This technical report applies only to circuit-breakers with their supporting structures which are rigidly connected with the ground, and does not cover the seismic qualification of circuit-breakers in metal enclosed switchgear.

Where circuit-breakers are not ground mounted, for example in a building, conditions for application are subject to agreement between users and manufacturers.

The seismic qualification of the circuit-breakers should take into account any auxiliary and control equipment which is mounted on the circuit-breaker structure. If the auxiliary and control equipment is mounted on a separate structure, it may be qualified independently.

This technical report is a guide providing procedures to seismically qualify ground mounted circuit-breakers.

The seismic qualification of a circuit-breaker is only performed upon request.

This technical report specifies seismic severity levels and gives a choice of methods that can be applied to demonstrate the performance of circuit-breakers for which seismic qualification is required.

NOTE In the USA, the evaluation of the seismic qualifications for circuit breakers is conducted in accordance with IEEE 693: IEEE Recommended Practice for Seismic Design of Substations.

Document History

IEC/TR 62271-300
November 1, 2006
High-voltage switchgear and controlgear – Part 300: Seismic qualification of alternating current circuit-breakers
Scope and object This technical report applies only to circuit-breakers with their supporting structures which are rigidly connected with the ground, and does not cover the seismic qualification of...

References

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