zref:ats:inteli
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| zref:ats:inteli [2024/06/26 04:44] – [Auto Mains Fail Transfer Switch] Alan Shea | zref:ats:inteli [2025/10/30 21:02] (current) – [Utility Power Return] 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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| - If utility power fails to return within 5 seconds: | - If utility power fails to return within 5 seconds: | ||
| - InteliATS closes KGS [6] to start the genset | - InteliATS closes KGS [6] to start the genset | ||
| - | - Once the generator is running, the Inteli: | + | - Once the generator is running, the InteliATS |
| - Qualifies input for minimum, maximum voltage on all phases, correct phase rotation, minimum, maximum frequency | - Qualifies input for minimum, maximum voltage on all phases, correct phase rotation, minimum, maximum frequency | ||
| - Illuminates L-G (Blue) indicating generator power is OK. | - Illuminates L-G (Blue) indicating generator power is OK. | ||
| Line 61: | Line 61: | ||
| ====Utility Power Return== | ====Utility Power Return== | ||
| - | - When Utility Power returns, | + | - When Utility Power returns, |
| - Qualifies input for minimum, maximum voltage on all phases, correct phase rotation, minimum, maximum frequency | - Qualifies input for minimum, maximum voltage on all phases, correct phase rotation, minimum, maximum frequency | ||
| - Indicator L-U (Green) illuminates to confirm utility grid voltage is acceptable | - Indicator L-U (Green) illuminates to confirm utility grid voltage is acceptable | ||
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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. | ||
| + | |||
| + | * **A C.T. with loose leads can have lethal voltage on the terminal, possibly over 1000V.** | ||
| + | |||
| + | * **Do not disconnect a C.T. when power is present in the measured circuit!** | ||
| + | </ | ||
| + | |||
zref/ats/inteli.1719377066.txt.gz · Last modified: by Alan Shea
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