| Input Control Voltage | 65 to 145 Vac 50/60 hZ |
| Voltage Measurements of Utility | Source 1 VAB Source 2 VABSource 1 VAC Source 2 VBCSource 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 Vac10A@30 Vdc |
| Applicable Testing | UL-recognized componentMeets intent of UL 991 & UL 1008Meets IEC 1000-4-2, 1000-4-3, 1000-4-4 |
| Applicable Testing Continued | 1000-4-5, 1000-4-6, 1000-4-11CISPR 11, Class AFCC Part 15, Class ACSS 22.2-178 |
| Enclosure Compatibility | NEMA 1, NEMA 3R and NEMA 12UV-resistant ATC-300+ faceplate |