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The ATC-300+ 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-300+ Controller provides programmed flexibility to address the needs of any system. It operates from all system voltages between 120 to 600V, single-phase and three-phase at 50 or 60 Hz. In addition, a period of no control power is provided. The controller monitors the condition of the three-phase line-to-line voltage and frequency of Source 1 and Source 2 power sources and can be programmed for single-phase operation. The ATC-300+ Controller provides the intelligence to ensure that the ATS operates properly through a series of programmed sensing and timing functions.

Technical Summary

Rating Range

120 to 600V, single phase and three phase @ 50/60 Hz

Transfer Type

Switch application dependent

Switch Type

Switch application dependent

ATC Controller Specifications

Input Control Voltage

65 to 145 Vac 50/60 hZ

Voltage Measurements of Utility

Source 1 VAB Source 2 VAB
Source 1 VAC Source 2 VBC
Source 1 VCA Source 2 VCA

Voltage Measurement Range

0 to 790 VAC rms (50/60 Hz)

Voltage Measurement Accuracy

+/-2% of nominal input voltage

Frequency Measurements Of

Source 1 and Source 2

Frequency Measurement Range

40 Hz to 70 Hz

Frequency Measurement Accuracy

+/- 0.1 Hz

Undervoltage Dropout

50% to 90% of nominal voltage

Undervoltage Pickup

(Dropout +2%) to 99% of the nominal system voltage

Underfrequency Dropout Range

90 to 97% of the nominal system frequency

Underfrequency Pickup Range

(Dropout +1 Hz) to 99% of the nominal system frequency

Overfrequency Dropout Range

103 to 110% of the nominal system frequency

Overfrequency Pickup Range

101% to (dropout - 1 Hz) of the nominal system frequency

Operating Temperature Range

-20 to 70 degree C (-4 to +158 degree F)

Storage Temperature Range

-30 to 85 degree C (-22 to +185 degree F)

Operating Humidity

0 to 95% relative humidity (noncondensing)

Operating Environment

Resistant to ammonia, methane, nitrogen,hydrogen and hydrocarbons

Generator Start Relay

5A, 1/6 hp @ 250 Vac Vac 5A @ 30 Vdc with a 150W maximum load

K1, K2 Relays

10A, 1-3 hp @ 250 Vac

10A@30 Vdc

Applicable Testing

UL-recognized component
Meets intent of UL 991 & UL 1008
Meets IEC 1000-4-2, 1000-4-3, 1000-4-4

Applicable Testing Continued

1000-4-5, 1000-4-6, 1000-4-11
CISPR 11, Class A
FCC Part 15, Class A
CSS 22.2-178

Enclosure Compatibility

NEMA 1, NEMA 3R and NEMA 12
UV-resistant ATC-300+ faceplate

Standard Equipment:

Optional Equipment:

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