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Key Specs
The ATC-900 Controller is a programmable microprocessor-based monitoring device for use on Cat transfer switches. Data access and programming operations are performed using the ATC-900's touch sensitive function buttons in conjunction with an easy-to-read illuminated alphanumeric LED display. Both the functional buttons and the display window are part of the device's door mounted front panel. A built in Help button provides user assistance in the form of message displays.
The communication option permits monitoring and control of several transfer switches, locally or remotely from a single point. Depending on the application, the user can customize the ATC-900 to meet the particular application. The ATC-900 is equipped to display historical information either via the front panel or over mod bus communications to a personal computer. Source 1 and Source 2 run time, available time and connect time are available, as well as load energized time, number of transfers, date, time and reason for the last 16 transfers.
| Rating Range | 120 to 600V, single phase and three phase @ 50/60 Hz 120 to 600V, single phase and three phase @ 50/60 Hz |
| Transfer Type | Switch application dependent Switch application dependent |
| Switch Type | Switch application dependent Switch application dependent |
| Input Control Voltage | 120Vac (50/60 Hz) (operating range 65 to 160 Vac) 120Vac (50/60 Hz) (operating range 65 to 160 Vac) |
| Voltage Measurements of Utility |
Source 1, Source 2 and Load (VAB, VBC, VCA for Three Phase System) Source 1, Source 2 and Load (VAB, VBC, VCA for Three Phase System) |
| Voltage Measurement Range | 0 to 700 Vac 0 to 700 Vac |
| Voltage Measurement Accuracy | +/-1% of full scale +/-1% of full scale |
| Frequency Measurements Of | Source 1 and Source 2 Source 1 and Source 2 |
| Frequency Measurement Range | 40 Hz to 80 Hz 40 Hz to 80 Hz |
| Frequency Measurement Accuracy | +/- 0.1 Hz +/- 0.1 Hz |
| Undervoltage Dropout |
Breaker Style 50 to 97% of Nominal System Voltage Contactor Style - 78 to 97% Breaker Style 50 to 97% of Nominal System Voltage Contactor Style - 78 to 97% |
| Undervoltage Pickup | (Dropout +2%) to 99% of Nominal System Voltage (Dropout +2%) to 99% of Nominal System Voltage |
| Underfrequency Dropout Range | 90 to 97% of Nominal System Frequency 90 to 97% of Nominal System Frequency |
| Underfrequency Pickup Range | (Dropout +1 Hz) to 99% of Nominal System Frequency (Dropout +1 Hz) to 99% of Nominal System Frequency |
| Overfrequency Dropout Range | 103 to 110% of Nominal System Frequency 103 to 110% of Nominal System Frequency |
| Overfrequency Pickup Range | 101% to (Dropout +1 Hz) of nominal system frequency 101% to (Dropout +1 Hz) of nominal system frequency |
| Operating Temperature Range | -20 to 70 degree C (-4 to +158 degree F) -20 to 70 degree C (-4 to +158 degree F) |
| Operating Humidity | Up to 90% Relative Humidity (non-condensing) Up to 90% Relative Humidity (non-condensing) |
| Enclosure Compatibility |
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| System Voltage Application | 120 to 600 Vac (50/60 Hz) (single or three phase) 120 to 600 Vac (50/60 Hz) (single or three phase) |
Caterpillar product brochures and other informational documents are available for your growing business.
