Technical Summary

Rating Range
40-3000A
Transfer Type
Open transition
Switch Type
Contactor based
  • Standard Features
    • Auxiliary Contact:
      Closed when the switch is in the emergency position
      (Additional contacts optional)
    • Auxiliary Contact:
      Closed when the switch is in the normal position
      (Additional contacts optional)
    • 7, 14, 28 day interval timed exerciser, pushbutton/timer operation
    • Engine Start Contact
    • Indicating LED Pilot Lights:
      -Switch in emergency position
      -Switch in normal position
      - Normal source available
      -Emergency source available
    • Time Delay to Engine Start: Standard setting 3 seconds, adjustable 0-10 seconds
    • In-Phase Monitor, self-adjusting (Not available on CTGD models)
    • Time Delay on Retransfer to Normal: To delay retransfer to normal source (immediate retransfer on generator set failure); standard setting 30 minutes, adjustable 0-60 minutes
    • Push button Bypass of time delay and normal emergency
    • Test Switch - Momentary
    • Event Log OD 16 Event that track date, time, reason and action taken
    • Voltage and Frequency Indication for S1 and S2
    • Peak Shave/Remote Load Test: Input for peak shave or remote load test; includes automatic return to normal if emergency source fails and normal is present; 120 VAC
    • Array
  • MX150 Control Panel
    • Time Delay for Engine Cool Down: Allows engine to run unloaded after switch retransfer to normal; standard setting 5 minutes, adjustable 0-60 minutes
    • Time Delay on Transfer to Emergency: To delay transfer to emergency after verifying emergency source available; standard setting 1 second, adjustable 0-5 minutes
    • Timer and voltage/frequency settings adjustable without disconnection from power sources
    • Built-in diagnostics with LCD display for immediate troubleshooting
    • LED/LCD indicators for ease of viewing and long life
    • Nonvolatile memory (exerciser battery backup not required for standard operation)
    • Processor and digital circuitry isolated from line voltage
    • Inputs opto-isolated for high electrical immunity to transients and noise
    • Communications header for network interface
  • Options
    • Plant Exerciser, clock type (load/no load): Allows the generator to start and run unloaded or to simulate a power failure, start generator and run under load (7-14-28-365 days, user selectable)
    • Space heater and thermostat
    • Network communications interface card (LonWorks / ModBus)
    • Maintained Test Switch
    • Maintained Test Switch w/Keypad
    • Service entrance configuration
    • Auxiliary Contact, operates on Source 1 line failure
    • Auxiliary Contact, operates on Source 2 availability
    • Auxiliary Contacts: Closed when the transfer switch is in Source 2 position
    • Auxiliary Contacts: Closed when the transfer switch is in Source 1 position
    • Disconnect Switch: Permits transfer in “AUTO” position and inhibits transfer in “INHIBIT” position. (Standard 800A and above)
    • Elevator Pre-Signal Auxiliary Contacts: Open 0-60 seconds prior to transfer to either direction, re-closes after transfer
    • Universal Motor Load Disconnect Circuit: Auxiliary Contact opens 0-60 seconds prior to transfer in either direction, re-closes after transfer. Can be configured by end user for Pre-transfer, Post-transfer, or both.
    • Voltage Imbalance Monitor (Three Phase)
    • Lockable, see-through cover for ATS controller
    • Array
    • Note:For applications requiring additional options or other configurations, see the CTS Series fully configurable transfer switch.
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