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| zref:ats:inteli [2024/06/26 04:44] – [Auto Mains Fail Transfer Switch] Alan Shea | zref:ats:inteli [2024/09/21 22:35] (current) – Alan Shea | ||
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| The appropriate size of motor contactors should be selected based on the load served and the genset size. The 400A frame is a good general purpose selection, but smaller or larger can substituted. Recommended source: [[https:// | The appropriate size of motor contactors should be selected based on the load served and the genset size. The 400A frame is a good general purpose selection, but smaller or larger can substituted. Recommended source: [[https:// | ||
| - | * //See the discussion at [[: | + | * //See the discussion at [[: |
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| {{page>: | {{page>: | ||
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| + | <WRAP center round alert 80%> | ||
| + | **DANGER:** Current transformers must be connected to a device, or short-circuited before power is applied in the circuit to be measured. Current transformers are //constant current// devices, not //constant voltage// like ordinary transformers. | ||
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| + | * **A C.T. with loose leads can have lethal voltage on the terminal, possibly over 1000V.** | ||
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| + | * **Do not disconnect a C.T. when power is present in the measured circuit!** | ||
| + | </ | ||
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