Tripp Lite SV20KM1P1B Owners Manual for SmartOnline 208V SV-Series 3-Phase Mod - Page 12
Input 1, Input 2
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6. Operating Overview 6.1 Operating Modes Normal (Double Conversion, VFI) Power flows through the UPS rectifier and inverter. Voltage and frequency to the load is independent of voltage and frequency from the input. There are higher efficiency losses in this mode due to the double conversion process. Q2 Maintenance Breaker STS Bypass Main Rectifier Inverter Q1 Input Breaker Battery Breaker Inverter Relay Load Q3 Output Breaker ECO Mode When utility power quality is stable, power can be diverted through the automatic bypass of the UPS. If the utility power goes out of tolerance or is lost, the UPS transfers quickly back to inverter to power the load in VFI mode. The result is improved efficiency and cost savings when power conditions are good. Q2 Maintenance Breaker STS Bypass Main Rectifier Inverter Q1 Input Breaker Battery Breaker Inverter Relay Load Q3 Output Breaker Figure 6.1 Figure 6.2 6.2 Single or Dual Feed Input The UPS can accept dual inputs for additional redundancy (e.g. in a server rack installation operating on dual AC feeds). When powering the UPS with dual AC feeds, first remove the jumpers, as shown below. Small- and Medium-Frame Units INPUT 2 Large-Frame Units INPUT 1 BUSBAR INPUT 2 INPUT 1 Figure 6.3 For dual input installation, red, yellow and black wire jumpers must be removed as shown in Figure 6.3 (top rear view of cabinet). Figure 6.4 For dual input installation, busbar jumpers must be removed as shown in Figure 6.4 (top view of cabinet). 12
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