| 摘要 |
A transfer system may be provided. The transfer system may comprise a first transfer switch comprising first normally closed contacts and first normally open contacts. In addition, the transfer system may comprise a second transfer switch comprising second normally closed contacts and second normally open contacts. Furthermore, the transfer system may comprise third normally closed contacts with a solid state switch in parallel. A source monitor may be configured to monitor the quality of a primary source and a backup source. And a source control may be configured to operate the first transfer switch, the second transfer switch, the third normally closed contacts, and the solid state switch to transfer a load from the primary source to the backup source in response to the monitored quality of the primary source and the backup source.
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