Emerson Specifications, Liebert NXL UPS specifications, 250 300 400 Input Parameters

Table 6

Liebert NXL UPS specifications

250

300

400

Input Parameters

Input Voltage to Rectifier, VAC

480V 3-phase, 3-wire

Input Voltage to Bypass, VAC

480V 3-phase, 3-wire or 4-wire

+10% to -15

Input Voltage Range, VAC

-15% to -20%*

-20% to -30%**

<-30%***

Input Frequency, Hz

60

Permissible Input Frequency Range, Hz

55 to 65

Input THDi at Nominal Voltage at Full Load, %

<10% with 6-pulse & Passive Filter

Power Walk-In, sec

3 to 30 (selectable) in 1 sec. Increment

Neutral Current

1.7 times full-phase current

Battery & DC Parameters

Battery Type

VRLA (Valve Regulated Lead Acid) or

(FLA) Flooded Lead Acid

Nominal Battery Bus, VDC

480V

Battery Float Voltage, VDC

540V

Minimum End of Discharge Voltage, VDC

384V (for VRLA / Flooded Lead Acid)

DC Ripple Voltage in Float & Const V Ch. Mode, %

<1 (RMS value) < 3,4% Vpp

Temperature Compensated Battery Charging

Standard (with temperature probe)

Output Parameters

Inverter Type

IGBT-based Sine-Sine PWM Controlled

Output Power, kW

225

270

360

Output Voltage, VAC

480V 3-ph, 4-w

Output Voltage Regulation, %

< 1% (3-phase RMS average)

Output Voltage Regulation (100% Unb. Load)

< 2% (3-phase RMS average)

Output Frequency, Hz

60

Output Frequency Regulation, %

± 0.1

Output THDu Linear Load at Nominal Voltage, %

<2%

Output THDu at Nominal Voltage

2.5% (max)

Including a 100kVA Non Linear Load per EN 62040-3, %

Capacity to Handle High Crest Factor Load

3:1

Capacity to handle Step Load, %

0-100 or 100-0

Transient Recovery (linear loads), %

Within 5% peak-to-peak in one line cycle.

Unbalance Loads Current Capacity

100% of nominal phase current

Capacity to Handle Leading PF Load

0.9 lag to Nom

Subject to Max. kW rating

at 0.95 Lead

Subject to Max. kW rating

at 0,9 Lead

Subject to 12.5% kW derate or same Rating

and 10°C Temp. Derate

Voltage Displacement, ° el

120° ±1° el (with 100% unbalanced load)

Compliance to FCC Class-A

Standard

105% for 85 minutes

Overload Conditions, % FL

110% for 60 minutes

125% for 10 minutes

150% for 1 minute