Actuators with Integral Controls
 

In Conventional Actuators, the reversing contactors are provided externally i.e. in Motor Control Centre (MCC). But this leads to increased wiring & hassles during commissioning. Actuators can be provided with Integral Controls, which consists of the following:
 
•
Starters / Reversing Contactors ( Electro-Mechanically Interlocked )
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Selector Switch ( Local-Off-Remote ) with padlock
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Local Push Buttons ( Open-Stop-Close )
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Step-down Transformer
   
With integral starter actuator, the following additional safety / protection features can be provided :
   
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 Thermal Overload Relay
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 Single Phasing Protection
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 Automatic Phase Correction
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 Electronic (Solid-State) Starter
   
The advantages of “Integral Controls” :
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All the safety / motor protection features of actuators (e.g. Limit & Torque Switches, Thermo-Switches, Thermal Overload Relay, Single Phasing Protection, Automatic Phase Correction etc.) are internally wired / connected. This ensures total safety of the actuator.
•
 There is no susceptibility to the mistakes made during field cabling.
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 The field wiring is substantially reduced, which results in cost saving.
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It is possible to operate the valve locally, which is an important function during commissioning and on-site repairs / servicing.
 
 
Actuators with Integral Controls
  
 
 
   
 
 
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