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zref:ats:inteli [2024/06/26 04:44] – [Auto Mains Fail Transfer Switch] Alan Sheazref: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://www.factorymation.com/Contactors_Overloads_qs/Metasol-Contactors-Overloads-9-to-800A?Coil_Voltage=240V-AC-Class&Nominal_Amps=150,225,400,800|FactoryMation.com]] //(225A frame and larger have 100-240VAC/DC coils)//  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://www.factorymation.com/Contactors_Overloads_qs/Metasol-Contactors-Overloads-9-to-800A?Coil_Voltage=240V-AC-Class&Nominal_Amps=150,225,400,800|FactoryMation.com]] //(225A frame and larger have 100-240VAC/DC coils)// 
  
-  * //See the discussion at [[:zref:ats:start|ATS Pro & Con]] for reasons why this may or may not be an appropriate choice for your application.// +  * //See the discussion at [[:zref:ats:start#contactor-based-atspro-con|ATS Pro & Con]] for reasons why this may or may not be an appropriate choice for your application.// 
  
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 {{page>:warnings&nofooter}} {{page>:warnings&nofooter}}
 +
 +<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!** 
 +</WRAP>
 +
zref/ats/inteli.1719377066.txt.gz · Last modified: by Alan Shea