Electric Power Generation

ATC-100 CONTROLLER

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Overview

The ATC-100 is a comprehensive and multifunctional microprocessor-based ATS controller. It is a compact and self-contained panel-mounted device that is designed to replace traditional relay and solid-state logic panels.The ATC provides both fixed and jumper-selectable settings to allow for a range of applications. It operates from all system voltages between 120 and 480 Vac, single-phase and three phase at 50 or 60 Hz. The ATC-100 monitors the condition of the three-phase line to line voltage and the frequency of both the utility and generator power sources. It can also be set up for single-phase operation. The ATC-100 provides the necessary intelligence to ensure that the transfer switch operates properly through a series of selectable sensing and timing functions.

Technical Summary

Units:
Rating Range 120 to 480V, single phase and three phase @ 50/60 Hz 120 to 480V, single phase and three phase @ 50/60 Hz Less
Transfer Type Switch application dependent Switch application dependent Less
Switch Type Switch application dependent Switch application dependent Less

ATC Controller Specifications

Input Control Voltage 95 to 145 Vac 50/60 Hz 95 to 145 Vac 50/60 Hz Less
Voltage Measurements of Utility VAB generator VAB
VBC generator VBC
VCA generator VCA VAB generator VAB
VBC generator VBC
VCA generator VCA		 Less
Voltage Measurement Range 0 to 575 Vac rms (50/60 Hz) 0 to 575 Vac rms (50/60 Hz) Less
Voltage Measurement Accuracy ± 1% of full scale ± 1% of full scale Less
Frequency Measurements Of Generator Generator Less
Frequency Measurement Range 40 Hz to 70 Hz 40 Hz to 70 Hz Less
Frequency Measurement Accuracy ±0.3 Hz over the measurement range ±0.3 Hz over the measurement range Less
Undervoltage Dropout 80% of the nominal system voltage 80% of the nominal system voltage Less
Undervoltage Pickup 90% of the nominal system voltage 90% of the nominal system voltage Less
Underfrequency Dropout Range 90% of the nominal system frequency 90% of the nominal system frequency Less
Underfrequency Pickup Range 95% of the nominal system frequency 95% of the nominal system frequency Less
Overfrequency Dropout Range 115% of the nominal system frequency 115% of the nominal system frequency Less
Overfrequency Pickup Range 110% of the nominal system frequency 110% of the nominal system frequency Less
Operating Temperature Range –20 to +70°C (–4 to +158°F) –20 to +70°C (–4 to +158°F) Less
Storage Temperature Range –30 to +85°C (–22 to +185°F) –30 to +85°C (–22 to +185°F) Less
Operating Humidity 0 to 95% relative humidity (noncondensing) 0 to 95% relative humidity (noncondensing) Less
Operating Environment Resistant to ammonia, methane, nitrogen, hydrogen and hydrocarbons Resistant to ammonia, methane, nitrogen, hydrogen and hydrocarbons Less
Generator Start Relay 5A, 1/6 hp @ 250 Vac Vac 5A @ 30 Vdc with a 150W maximum load 5A, 1/6 hp @ 250 Vac Vac 5A @ 30 Vdc with a 150W maximum load Less
K1, K2 Relays
10A, 1–3 hp @ 250 Vac

10A@30 Vdc
10A, 1–3 hp @ 250 Vac

10A@30 Vdc
 Less
Applicable Testing UL-recognized component
UL 1008, UL 991 Environmental IEC 61000-4-2, 61000-4-3, 61000-4-4, UL-recognized component
UL 1008, UL 991 Environmental IEC 61000-4-2, 61000-4-3, 61000-4-4,		 Less
Applicable Testing Continued 61000-4-5, 61000-4-6, 61000-4-11
CISPR 11, Class B
FCC Part 15, Class B
CSS 22.2-178 61000-4-5, 61000-4-6, 61000-4-11
CISPR 11, Class B
FCC Part 15, Class B
CSS 22.2-178		 Less
Enclosure Compatibility NEMA 1, NEMA 3R and NEMA 12
UV-resistant ATC-100 faceplate NEMA 1, NEMA 3R and NEMA 12
UV-resistant ATC-100 faceplate		 Less

Performance Features

  • Source 1 sensing:
    • Undervoltage / underfrequency
    • Overfrequency

  • Source 2 sensing:
    • Undervoltage / Overfrequency

  • Controller settings via jumpers located at the rear of the unit
  • Mimic diagram with source available and connected LED indication
  • System test pushbutton
  • Plant Exerciser - Selectable day, off, 7, 14 or 28 day intervals with fixed 15 minute run time
  • Monitor utility and generator power source voltages and generator power source frequency
  • Provides undervoltage protection of the utility and generator power sources
  • Provides underfrequency and overfrequency protection of the generator power source
  • Permits easy customer setup
  • Permits system testing
  • In-phase transition

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Caterpillar offers a comprehensive variety of electric power systems, customized to fit your needs. Our specialized systems deliver high power and performance in industries across the globe. With Caterpillar, you get outstanding manufacturing quality, expert support, and the essential tools and applications to complete any project.

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