Specifications

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16.5
Tr a n s f er Switches
ATC Controllers
Standards and Certifications
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UL listed component
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Meets intent of
UL 991, 1008
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Meets IEC 1000-4-2, 1000-
4-3, 1000-4-4, 1000-4-5,
1000-4-6, 1000-4-11
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Meets CISPR 11, Class A
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Complies with FCC Part
15, Class A
Technical Data and Specifications
ATC-300 Controller Specifications
The following set points are programmable if the corresponding feature is programmed.
ATC-300 Programming Features/Set Points
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Note
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Complete list of programming selections found in IB01602009E
Description Specification
Input control voltage 65–145 Vac 50/60 Hz
Voltage measurements of Source 1 V
AB
Source 1 V
BC
Source 1 V
CA
Source 2 V
AB
Source 2 V
BC
Source 2 V
CA
Voltage measurement range 0–790 Vac rms (50/60 Hz)
Voltage measurement accuracy ±2% of nominal input voltage
Frequency measurement for Source 1 and Source 2
Frequency measurement range 40–70 Hz
Frequency measurement accuracy ±0.1 Hz
Undervoltage dropout range 50–90% of nominal voltage
Undervoltage pickup range (Dropout +2%) to 99% of the nominal system voltage
Overvoltage dropout range 105–120% of nominal voltage
Overfrequency pickup range 101% to (Dropout –1 Hz) of the nominal system frequency
Underfrequency dropout range 90–97% of the nominal system frequency
Underfrequency pickup range (Dropout +1 Hz) to 99% of the nominal system frequency
Overfrequency dropout range 103–110% of the nominal system frequency
Overfrequency pickup range 101% to (Dropout –1 Hz) of the nominal system frequency
Operating temperature range –20 to +70°C (–4 to +158°F)
Storage temperature range –0 to +85°C (–22 to +185°F)
Operating humidity 0–95% relative humidity (noncondensing)
Operating environment Resistant to ammonia, methane, nitrogen, hydrogen and hydrocarbons
Generator start relay 5A, 1/6 hp at 250 Vac/5A at 30 Vdc with a 150W maximum load
K1, K2, pretransfer, alarm relays 10A, 1–3 hp at 250 Vac/10A at 30 Vdc
Enclosure compatibility NEMA 1, NEMA 3R, and NEMA 12
UV resistant ATC-300 faceplate
Setpoint Set Point Units Description Range Factory Default
TDES Minutes: seconds Time delay engine start 0–120 seconds 0:03
TDNE Minutes: seconds Time delay normal to emergency 0–1800 seconds 0:00
TDEN Minutes: seconds Time delay emergency to normal 0–1800 seconds 5:00
TDEC Minutes: seconds Time delay engine cool-off 0–1800 seconds 5:00
TDN Minutes: seconds Time delay neutral 0–120 seconds 0:00
PLANT EXER Days Plant exerciser programming Off, daily, 7-day, 14-day or 28 day Off
TEST MODE — Test Mode 0, 1 or 2 (0 = no load engine test, 1 = load engine test, 2 =disabled) 0
TER Hours: minutes Engine run test time 0–600 min 5:00
TPRE Minutes: seconds Pre-transfer delay timer 0–120 sec 0:00
PHASES — Three-phase or single-phase 1 or 3 As ordered
VOLT UNBAL Volts Voltage unbalanced 0 or 1 (1 = enabled) 1
UNBAL DROP % Percent Percent for unbalanced voltage dropout 5–20% of phase voltage unbalance 20%
UNBAL PICK % Percent Percent for unbalanced voltage pickup Dropout minus (UNBAL DROP % –2) to 3% 10%
UNBAL DELAY Seconds Unbalanced delay timer 10–30 0:20
TDEF Seconds Time delay emergency fail timer 0–6 sec 6
PHASE REV — Phase reversal OFF, ABC or CBA OFF