Voltage Unbalance on Dropout for Source 1 and Source 2
5 to 20% of nominal
Delay NeutralTransition Time Delays (DT,DW)
0-10 minutes
Control Power
120 VAC
Undervoltage Dropout for Source 1 and Source 2
75-99% of nominal
Undervoltage Restore for Source 1 and Source 2
85-100% of nominal
Overfrequency Dropout for Source 1 and Source 2
50.1 – 63 Hz
Source Sensing
120 – 690 VAC +/- 1% of nominal voltage (+/- .05 Hz, +/-.5 A)
Delay for Engine Cool Down (U)
0-60 minutes
Underfrequency Restore for Source 1 and Source 2
45 – 59.5 Hz
Load Control Relay Contacts (2)
0-259 minutes
Overvoltage Dropout for Source 1 and Source 2
105 – 110% of nominal
Voltage Unbalance for Restore for Source 1 and Source 2
4 to 19% of nominal
Storage Temperature
(-40˚C – 90˚C )
Underfrequency Dropout for Source 1 and Source 2
45 – 59.9 Hz
Overfrequency Restore for Source 1 and Source 2
50 – 62.9 Hz
Delay Transfer to Nonpreferred Source (W)
0-5 minutes
Operating Temperature Ambient
(-20˚C to 50˚C)
Communications Interface – Optional
Serial RS-485 upt to 115.2 Kbps or TCP/IP (10/100 base-T)
Overvoltage Restore for Source 1 and Source 2
103 – 108% of nominal
Load Control Relay Contacts (1)
rated for 10A @ 24VDC or 120VAC