The row-based Liebert APM is a transformer-free, on-line uninterruptible power supply (UPS) that allows quick and easy capacity increases with modular scalability–with no additional floor space required. Liebert APM operates with high efficiency–up to 94% at loads of 50-100%. The 208 Volt, three-phase Liebert APM is available in two models, expandable with modular power scalability: Liebert APM 45kVA/kW frame size is expandable from 15 to 45kVA/kW, with up to 45kVA/kW of capacity, or up to 30kVA/kW of capacity with a 15kVA/kW module for redundancy. This frame size includes internal batteries, and is compatible with the matching external battery cabinet and the optional Liebert APM bypass distribution cabinet (BDC). Liebert APM 90kVA/kW frame size is expandable from 15 to 90kVA/kW, with up to 90kVA/kW of capacity, or up to 75kVA/kW of capacity with a 15kVA/kW module for redundancy. This frame size requires the matching external battery cabinet, and is compatible with the optional Liebert APM BDC bypass distribution cabinet.
AC Input to UPS
• Voltage Configuration for Standard Units- 208V, three-phase, four-wire plus ground
• Voltage Range- +15%, -20% of nominal without derating
• Frequency- 40-70Hz
• Power Factor- 0.99 full load, 0.98 half load
• Inrush Current- UPS inrush current not to exceed 1.5 times rated input current. Maintenance bypass and distribution cabinet inrush current not to exceed 8 times rated input current.
• Current Limit- 140% of nominal AC input current maximum
• Current Distortion- <3% reflected THD maximum at full load
• Surge Protection- Sustains input surges without damage per criteria listed in IEC 1000-4-5
AC Output, UPS Inverter
• Voltage Configuration- three-phase, 4-wire plus ground
• Voltage Regulation-
±1% three-phase RMS average for a balanced, three-phase load for the combined variation effects of
input voltage, connected load, battery voltage, ambient temperature and load power factor.
±5% three-phase RMS average for a 100% unbalanced load for the combined variation effects of input
voltage, connected load, battery voltage, ambient temperature and load power factor.
• Frequency- ±0.1% (single Liebert FlexPower assembly)
±0.25% (six Liebert FlexPower assemblies)
• Frequency Slew Rate- Selectable from 0.1Hz/sec to 3.0Hz/sec maximum for single unit
• Phase Balance-
120 degrees ±1 degree for balanced load
120 degrees ±1.5 degrees for 100% unbalanced load
• Voltage Distortion-
<1% total harmonic distortion (THD) for linear loads
<5% THD for 100% nonlinear loads (3:1 crest factor) without kVA/kW derating
• Load Power Factor Range- 0.7 lagging to 0.9 leading without derating
• Output Power Rating- 0.99 full load. 0.98 half load
• Overload Capability-
110% for 60 minutes
125% for 10 minutes
150% for 60 seconds
• Voltage Transient Response- 100% load step, ±5.0%
• Transient Recovery Time- to within 5% of steady state output voltage within half a cycle
• Voltage Unbalance- 100% unbalanced load, ±5%
Environmental
• Operating Ambient Temperature- 32°F to 104°F (0°C to 40°C)
• Storage/Transport Ambient Temperature- -4°F to 158°F (-20°C to 70°C)
• Relative Humidity- 0 to 95%, non-condensing
• Altitude-
Operating- 3300 ft. (1000m) above sea level; derate power by 1% per 330 ft. (100m) between 3300 and
6000 ft (1000m and 2000m).
Storage/Transport- to 40,000 ft. (12,200m) above mean sea level.
• Audible Noise- 56 dB (45kW/kVA models)
