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Instruction Booklet
Effective: April 2006 Page 21
ATC-300 Automatic
Transfer Switch Controller
The following setpoints are programmable if the corresponding feature is programmed.
Table 2. Programmable Features and Setpoints
SETPOINT SETPOINT UNITS DESCRIPTION RANGE FACTORY
DEFAULT
New Password Four Digits Set New Password 0000 to 9999 0300
TDES Minutes: Seconds Time Delay Engine Start 0 to 120 seconds 0:03
TDNE Minutes: Seconds Time Delay Normal to Emergency 0 to 1800 seconds 0:00
TDEN Minutes: Seconds Time Delay Emergency to Normal 0 to 1800 seconds 5:00
TDEC Minutes: Seconds Time Delay Engine Cool-off 0 to 1800 seconds 5:00
NOM FREQ Hertz Nominal Frequency 50 or 60 Hz As ordered
NOM VOLTS Volts Nominal Voltage 120 to 600 volts As ordered
S1 UV DROP Volts Source 1 Undervoltage Dropout Range:
Breaker/Switch Style ATS
Contactor Style ATS
50 to 97% of Nominal System Voltage
78 to 97% of Nominal System Voltage
80%
85%
S2 UV DROP Volts Source 2 Undervoltage Dropout Range:
Breaker/Switch Style ATS
Contactor Style ATS
50 to 97% of Nominal System Voltage
78 to 97% of Nominal System Voltage
80%
85%
S1 UV PICK Volts Source 1 Undervoltage Pickup Range:
Breaker/Switch Style ATS
Contactor Style ATS
(Dropout +2%) to 99% of Nominal System Voltage
(Dropout +2%) to 99% of Nominal System Voltage
90%
90%
S2 UV PICK Volts Source 2 Undervoltage Pickup Range:
Breaker/Switch Style ATS
Contactor Style ATS
(Dropout +2%) to 99% of Nominal System Voltage
(Dropout +2%) to 99% of Nominal System Voltage
90%
90%
S1 OV DROP Volts Source 1 Overvoltage Dropout Range:
Breaker/Switch Style ATS
Contactor Style ATS
105 to 120% of Nominal System Voltage
105 to 110% of Nominal System Voltage
115%
110%
S2 OV DROP Volts Source 2 Overvoltage Dropout Range:
Breaker/Switch Style ATS
Contactor Style ATS
105 to 120% of Nominal System Voltage
105 to 110% of Nominal System Voltage
115%
110%
S1 OV PICK Volts Source 1 Overvoltage Pickup Range:
Breaker/Switch Style ATS
Contactor Style ATS
103% to (Dropout -2%) of Nominal System Voltage
103% to (Dropout -2%) of Nominal System Voltage
110%
105%
S2 OV PICK Volts Source 2 Overvoltage Pickup Range:
Breaker/Switch Style ATS
Contactor Style ATS
103% to (Dropout -2%) of Nominal System Voltage
103% to (Dropout -2%) of Nominal System Voltage
110%
105%
S1 UF DROP Hertz Source 1 Underfrequency Dropout Range:
Breaker/Switch Style ATS
Contactor Style ATS
90 to 97% of Nominal System Frequency
90 to 97% of Nominal System Frequency
94%
90%
S2 UF DROP Hertz Source 2 Underfrequency Dropout Range:
Breaker/Switch Style ATS
Contactor Style ATS
90 to 97% of Nominal System Frequency
90 to 97% of Nominal System Frequency
94%
90%
S1 UF PICK Hertz Source 1 Underfrequency Pickup Range:
Breaker/Switch Style ATS
Contactor Style ATS
(Dropout +1 Hz) to 99% of Nominal System Frequency
(Dropout +1 Hz) to 99% of Nominal System Frequency
96%
95%
S2 UF PICK Hertz Source 2 Underfrequency Pickup Range:
Breaker/Switch Style ATS
Contactor Style ATS
(Dropout +1 Hz) to 99% of Nominal System Frequency
(Dropout +1 Hz) to 99% of Nominal System Frequency
96%
95%
S1 OF DROP Hertz Source 1 Overfrequency Dropout Range:
Breaker/Switch Style ATS
Contactor Style ATS
103 to 110% of Nominal System Frequency
103 to 105% of Nominal System Frequency
106%
105%
S2 OF DROP Hertz Source 2 Overfrequency Dropout Range:
Breaker/Switch Style ATS
Contactor Style ATS
103 to 110% of Nominal System Frequency
103 to 105% of Nominal System Frequency
106%
105%
S1 OF PICK Hertz Source 1 Overfrequency Pickup Range:
Breaker/Switch Style ATS
Contactor Style ATS
101% to (Dropout -1 Hz) of Nominal System Frequency
101% to (Dropout -1 Hz) of Nominal System Frequency
104%
102%
S2 OF PICK Hertz Source 2 Overfrequency Pickup Range:
Breaker/Switch Style ATS
Contactor Style ATS
101% to (Dropout -1 Hz) of Nominal System Frequency
101% to (Dropout -1 Hz) of Nominal System Frequency
104%
102%
TDN Minutes: Seconds Time Delay Neutral 0 to 120 seconds 0:00
PLANT EXER Days Plant Exerciser Programming OFF, DAILY, 7-DAY, 14-DAY or 28 DAY OFF
PE LOAD XFR Plant Exerciser Load Transfer 0 or 1 (1 = yes) 0
PE DAY Days Plant Exerciser Day of the Week SUN, MON, TUE, WED, THU, FRI or SAT
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