Cat CTG Series Automatic Transfer Switch

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Cat CTG Series Automatic Transfer Switch

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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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