For these applications, closed transition transfer switches can be provided.
2.
It is generally required that the closed transition, or overlap time, be less than 100 milliseconds.
3.
With closed transition transfer, the on-site engine generator set is momentarily connected in parallel with the utility source.
4.
Closed transition transfer makes code-mandated monthly testing less objectionable because it eliminates the interruption to critical loads which occurs during traditional open transition transfer.
5.
The electronic central switch has only to open its circuit forcing the motor current to transfer into the 80 % winding in a no-break, closed transition action.
6.
In these instances it is proposed that the reaction proceeds through a closed transition state where the metal oxyanion is stabilized by chelation from the sulfate and coordinating groups on the camphor skeleton.
7.
Typical load switching applications for which closed transition transfer is desirable include data processing and electronic loads, certain motor and transformer loads, load curtailment systems, or anywhere load interruptions of even the shortest duration are objectionable.
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