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ats:start [2024/05/27 15:49] – Alan Sheaats:start [2024/08/27 13:12] (current) – [Motor Contactor Selection] Alan Shea
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 A secondary disadvantage of a packaged ATS is that the contacts are typically listed for a maximum of 5000 transfers at rated load, at which point the contacts must be replaced, and frequently the electro-mechanical actuator as well. In locations where electric power is reliable, this is typically not an issue as 5000 transfers will take several decades to accumulate. In locations with unreliable power this number of transfers can be accumulated in just two or three years.  A secondary disadvantage of a packaged ATS is that the contacts are typically listed for a maximum of 5000 transfers at rated load, at which point the contacts must be replaced, and frequently the electro-mechanical actuator as well. In locations where electric power is reliable, this is typically not an issue as 5000 transfers will take several decades to accumulate. In locations with unreliable power this number of transfers can be accumulated in just two or three years. 
  
-====Contactor-Based ATS===+====Contactor-Based ATS :: Pro & Con===
 Automatic transfer switches for standby generators using industrial motor-control contactors have the advantage of simplicity and long-life, typically over 500,000 operations at rated load in the 400A range, increasing in smaller Ampere size ratings. They also use typical off-the-shelf components that are commonly available.  Automatic transfer switches for standby generators using industrial motor-control contactors have the advantage of simplicity and long-life, typically over 500,000 operations at rated load in the 400A range, increasing in smaller Ampere size ratings. They also use typical off-the-shelf components that are commonly available. 
  
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 ====Motor Contactor Selection== ====Motor Contactor Selection==
-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, however circuit breakers and wire sizes must be adjusted appropriately. 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)//  
 +\\  
 +----  
 + 
 +<WRAP round alert 60%> 
 +\\  
 +**See warnings below**  
 +</WRAP>
  
 =====ComAp InteliATS Controller===  =====ComAp InteliATS Controller=== 
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   * [[https://www.comap-control.com/products/switchgear-control-and-protections/ats-controllers/inteliats2-70/|InteliATS 70]] adds PLC logic blocks   * [[https://www.comap-control.com/products/switchgear-control-and-protections/ats-controllers/inteliats2-70/|InteliATS 70]] adds PLC logic blocks
  
-[[:ats:inteli|{{ :ats:e117.1_r1_auto_transfer_switch_inteliats.png?direct&600 |}}]]+[[:ats:inteli|{{ :ats:e117.1_r1.1_auto_transfer_switch_inteliats.png?direct&600 |}}]]
  
  
-====Relay Logic ATS===+=====Relay Logic ATS===
   * **[[ats:relay|Auto Mains Fail Transfer Switch :: Relay Logic]]**   * **[[ats:relay|Auto Mains Fail Transfer Switch :: Relay Logic]]**
 Using the same motor contactors, this ATS is instead controlled by [[https://en.wikipedia.org/wiki/Relay_logic|"Relay Logic"]]. It is slightly cheaper, but requires more wiring and has less flexibility.  Using the same motor contactors, this ATS is instead controlled by [[https://en.wikipedia.org/wiki/Relay_logic|"Relay Logic"]]. It is slightly cheaper, but requires more wiring and has less flexibility. 
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 One or more [[meters|multi-meter(s)]] can be added, but are not shown in the wiring diagram. One or more [[meters|multi-meter(s)]] can be added, but are not shown in the wiring diagram.
  
-[[:ats:relay|{{ :ats:e116.1_r4.1_-_transfer_switch.png?direct&600 |}}]]+[[:ats:relay|{{ :ats:e116.1_r6_auto_transfer_switch.png?direct&600 |}}]] 
 +\\  
 + 
 +{{page>:warning&nofooter}}
  
ats/start.1716824974.txt.gz · Last modified: 2024/05/27 15:49 by Alan Shea

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