ATC-100, ATC-300+ or ATC-800 microprocessor-based controller
Mechanical (cable) and electrical interlocking to prevent paralleling of sources
Voltage and frequency sensing
Multiple field programmable time delays
Switch position indication
Source availability indication
Safe manual transfer under load
Source 1 and Source 2 auxiliary contacts
Programmable plant exerciser
System test pushbutton
Load Shed from emergency (ATC-800 only)
Mimic diagram
Mechanical (cable) and electrical interlocking to prevent paralleling of sources
Safe manual operation under full load with permanently affixed operating handle
Ambient temperature range: -40C to 40C (-40F to 104F)
Operating temperature range: -20C to 70C (-4F to 158F)
Operating humidity: up to 90%
Relative humidity (non-condensing)
Frequency sensing on Source 1 and 2
True RMS three phase voltage sensing on Source 1, Source 2 and load
Controls And Wiring
All controls relays and industrial grade relays are totally encapsulated to minimize exposure to dust and dirt. Lugs are 90º rated and all control wire is #16 AWG, type XLPE with a 125º temperature rating.
Enclosure
Durable powder-coated steel NEMA 1, NEMA 3R and NEMA 12 are available with ATC-100 and ATC-300+ controllers. NEMA 4 is only available with the ATC-800 controller. The enclosures are Seismic Qualified (BOCA, CBC, IBC, UBC). The hinges have removable hinge pins to facilitate door removal for easy wall mounting or service and are supplied with pad-lockable latches.