Liebert Npower 65kVa / 52 kW UPS, 208V, 220, 240, 480 or 600VAC
Liebert-Npower-65

A high-efficiency 3-phase UPS. Suitable for medium to large data center application.

Input

Voltage- 208, 220, 240, 480 or 600 VAC, 60 Hz. 3-phase,
3-or 4-wire plus ground
Voltage Range- +10, -15% (no battery discharge at -20%)
Frequency Range- 60 Hz, ? 5 Hz
Current Distortion- 10% maximum reflected THD at full
load with optional input filter- 30% THD without filter.
Current Limit- 115% of full load input current
Current Walk-in- 20 seconds to full load.
Power Factor- Up to 0.96 lagging at full load with
optional input filter- 0.80 lagging minimum at full load without optional input filter.
Surge Protection- Sustains input surges without damage,
per criteria listed in ANSI C62.41-1980, A & B (IEEE 587).

Output

Voltage- 208, 220, 240, 480 or 600 VAC, 60 Hz, 3-phase, 4-wire plus ground.
Voltage Regulation- 0.5% for balanced load, 1.0% for 100% unbalanced load.
Dynamic Regulation- 2.5% deviation for 100% load step. 1% for loss or return of AC input.
Transient Response Time- Recover to steady state within 1 cycle.
Voltage Distortion- For linear loads, 1% THD. Less than 2.5% THD for 100% nonlinear loads (3:1 crest factor) without kVA/kW derating.
Phasing Balance- 120 0.5 for balanced load. 120 1 for 100% unbalanced load.
Frequency Regulation- 0.1%
Load Power Factor Range-1.0 to 0.7 lagging without derating.
Overload- 125% of full load for ten minutes. 150% for one minute with true sinusoidal waveform.

Environmental

Operating Temperature- 0? to 40?C (UPS), 20? to 30?C (battery)
Non-Operating Temperature- -20?C to 70?C.
Relative Humidity- 0-95% non-condensing
Operating Altitude- Up to 6,600 feet (2000 meters) without derating.
Acoustical Noise- Less than 65 dBA typical, measured 1 meter from the unit.

Standards

ETL Listed to UL 1778 and UL 924 UPS standards, and CSA certified. Meets current requirements for safe high-performance UPS operation.

Standard Features

Like other Liebert UPS products,the Liebert Npower includes some features that are options (or not available) for some competitors:

True double-conversion topology,for protection against 100% of power disturbances. Internal bypass switch enables you to isolate the UPS for maintenance.Continuous-duty static switch performs in pulsed-parallel mode for supplying fault current and momentary overloads, and can operate continuously for longerduration events. Internal output isolation transformer protects your critical load from common-mode noise and harmful DC offsets. In someconfigurations, it provides a separately derived source,to support 4-wire loads without having to pull a neutral line from the service entrance.Automatic input filter disconnect isolates the input filter capacitors at light loads to avoid presenting a leading power factor to the utility or backup generator.Backlit LCD graphic display enables easy navigation between the graphic mimic screen and the menu screens.Event Log can display up to 512 time-and-date-stamped alarm events.Battery self-test helps verify the batteries readiness to carry the critical load.Battery temperature-compensated charging prevents overcharging in high ambient operating temperature or undercharging in cold weather.Battery Cycle Monitor records up to 132 battery discharge events.Battery Time Remaining feature displays backup time remaining at present connected load.On-generator battery charge limit reduces recharge current until the utility AC power is restored.Front-panel control of all configuration and field adjustment options simplify installation and maintenance.Top-and-bottom cable entry gives the installer more options for equipment location.Two-hole bus bar landing space and accessible terminal blocks for options can simplify installation.Casters under the unit are helpful when a forklift is not readily available.One-button startup for simpler operation.