Cat CTG Series Automatic Transfer Switch

ATS MX Contacter

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About the Cat CTG Series Automatic Transfer Switch

 


The Cat® CTG Series Automatic Transfer Switches (ATS) are pre-configured for applications requiring the dependability and ease of operation found in a full feature power contactor type transfer switch.

CTG switches are equipped with the next generation MX150 microprocessor panel, which controls the operation and displays the status of the transfer switch's position, timers and available sources. As an embedded digital controller, the MX150 offers high reliability and ease of unattended operation across a range of applications.

Features

Features

Features

Features
  • Ratings 40 to 3000 amps (2, 3 or 4 poles)
  • UL 1008 listed at 480 VAC
  • CSA certified at 600 VAC (200-225 amp - 480V)
  • IEC listed at 480 V
  • Double throw, mechanically interlocked contactor mechanism
  • Electrically operated, mechanically held
  • Designed for emergency and standby applications
  • Available in standard open transition (CTG)or delayed transition (CTGD) models
  • Ringing wave immunity per IEEE 472 (ANSI C37.90A
  • Conducted and Radiated Emissions per EN55022 Class B (CISPR 11) (Exceeds EN55011 & MILSTD 461 Class 3)
  • ESD immunity test per EN61000-4-2 (Level 4)
  • Radiated RF, electromagnetic field immunity test per EN61000-4-3 (ENV50140) 10v/m
  • Electrical fast transient/burst immunity test per EN61000-4-4
  • Radiated RF, electromagnetic field immunity
  • Surge immunity test per EN61000-4-5 IEEE C62.41 (1.2 X 50 ms, 5 & 8 kV)
  • Conducted immunity test per EN61000-4-6 (ENV50141)
  • Voltage dips and interruption immunity EN61000-4-11
  • Seismic Compliance to IEEE-693-2005 and IBC-2003

Design and Construction Features

Design and Construction Features
  • Close differential 3 phase under-voltage sensing of the normal source - factory standard setting 90% pickup, 80% dropout (adjustable);under frequency sensing of the normal source factory setting 95% pickup (adjustable)
  • Voltage and frequency sensing of the emergency source - factory standard setting 90% pickup voltage, 95% pickup frequency (adjustable)
  • Test switch (fast test/load/no load) to simulate normal source failure - automatically bypassed should the emergency source fail
  • Type 1 enclosure is standard - also available in open style or Types 3R, 4, 4X, or 12

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