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PIP ELSSG04
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PIP ELSSG04 2018 Edition, May 2018 Automatic Transfer Systems for Secondary Selective Substations
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Description / Abstract:
This Practice describes minimum requirements for design, performance, inspection, testing, and documentation, for delayed transfer automatic transfer systems (ATS) for two-source secondary selective substations. ATS provides automatic restoration of bus voltage upon loss of one of the sources. This Practice also covers remote monitoring and control requirements. This Practice does not cover fast bus transfer or delayed in-phase transfer systems.