IEC 62271-108
High-voltage switchgear and controlgear Part 108: High-voltage alternating current disconnecting circuit-breakers for rated voltages of 72,5 kV and above
| Organization: | IEC |
| Publication Date: | 1 October 2005 |
| Status: | inactive |
| Page Count: | 56 |
| ICS Code (High voltage switchgear and controlgear): | 29.130.10 |
scope:
Scope and object
This part of IEC 62271 applies to high-voltage alternating current disconnecting circuitbreakers for operation at frequencies of 50 Hz and 60 Hz on systems having voltages of 72,5 kV and above.
This standard identifies which requirements of IEC 60694, IEC 62271-100 and IEC 62271-102 standards are applicable. It also gives the additional requirements specific to these devices.
This standard covers a circuit-breaker which, when in the open position, satisfies the requirements of both a circuit-breaker and a disconnector.
As there is interaction between the requirements of the separate functions it is necessary to consider the standardisation of requirements. This standard details the requirements for a disconnecting circuit-breaker, identifying where these differ from the separate requirements of a discrete circuit-breaker and a disconnector.
NOTE For design examples of disconnecting circuit-breakers, refer to Annex A.
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