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zref:ats:inteli [2024/06/18 15:46] Alan Sheazref: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://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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   * {{ ::zref:ats:e117.1-3_r1.1_auto_transfer_switch_inteliats.dsn |}}   * {{ ::zref:ats:e117.1-3_r1.1_auto_transfer_switch_inteliats.dsn |}}
 \\  \\ 
-//(DSN) files can be edited with [[:TinyCAD|]].//+//(DSN) files can be edited with [[https://www.metatek.org/tinycad|TinyCAD]].//
 </WRAP> </WRAP>
 =====Description of Operation=== =====Description of Operation===
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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:zref:ats: +  - 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.
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 ====Utility Power Return== ====Utility Power Return==
-  - When Utility Power returns, Inteli:zref:ats: +  - When Utility Power returns, 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
     - 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>: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.1718725567.txt.gz · Last modified: by Alan Shea