Emerson Liebert NX 40-200kVA Technical Specifications

LIEBERT® NX™ 3-PHASE UPS: 40-200KVA, 60HZ, 480VAC - SITE PLANNING DATA

General Specifications

INPUT

Vol tag e 480VAC, 60Hz, 3-phase 3-wire plus ground

Voltage Range w/o derating +15%, -20%

Frequency Range 57-63Hz

Current Distortion 3% maximum reflected THD at full load

Current Limit 125% of full load input current

Power Factor >0.99 lagging at full load; >0.98 lagging at half load

Surge Protection Sustains input surges without damage, per criteria listed in IEC 61000-4-5

OUTPUT

Voltage 480VAC, 60Hz, 3-phase 3-wire plus ground

Voltage Adjustment Range ±5%

Voltage Regulation 1% for balanced load 2% for 100% unbalanced load

Dynamic Regulation ±5% deviation for 100% load step; ±1% for loss or return of AC input

Transient Response Time Recover to ±5% of output voltage within 1/2 cycle

Voltage Distortion For linear loads, 1% THD; Less than 4% THD for 100% nonlinear loads without kVA/kW derating

Phasing Balance 120° ±0.5° for balanced load; 120° ±1° for 100% unbalanced load

Frequency Regulation ±0.05% single module; ±0.25% paralleled modules

Load Power Factor Range 0.5 lagging to 1.0 without derating

Overload 125% of full load for 10 minutes; 150% for 1 minute, with true sinusoidal waveform

ENVIRONMENTAL

Operating Temperature UPS: 32° to 104°F (0-40°C); Battery: 68° to 86°F (20-30°C)

Non-Operating Temperature -13° to 158°F (-25° to 70°C)

Relative Humidity 0-95% non-condensing

Operating Altitude Up to 6,500 ft. (2,000m) without derating

Acoustical Noise (full load)

80kVA <67dB at 80-104°F (27-40°C) ambient; <61dB below 80°F (27°C) ambient

120kVA <69dB at 80-104°F (27-40°C) ambient; <63dB below 80°F (27°C) ambient

200kVA <74dB at 80-104°F (27-40°C) ambient; <68dB below 80°F (27°C) ambient

STANDARDS

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

The Liebert NX is a true on-line,
double conversion, three-phase
UPS system that delivers
complete, centralized power
protection for mission-critical
systems.

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Site Planning Data - Single Input, 40-200kVA, 60Hz, 480VAC

Site Planning Data - Single Input, 40-200kVA, 60Hz, 480VAC

UPS Rating Voltage AC Input Battery AC Output Mechanical Data

Input

kVA kW

40 36 480 480 48 60 80 480 106 225 48 70

60 54 480 480 71 89 110 / 125 480 157 225 72 100 15,400 (4.5) 620 (1050)

80 72 480 480 94 118 150 480 208 225 96 125 20,600 (6.0) 620 (1050)

80 72 480 480 94 118 150 480 205 350 96 125

100 90 480 480 117 147 175 480 258 350 120 150 24,300 (7.1) 920 (1550)

120 108 480 480 140 175 225 480 307 350 144 200 28,700 (8.4) 920 (1550)

160 144 480 480 186 233 300 480 411 500 192 250

200 180 480 480 234 293 350 480 511 600 241 300 47,000 (13.8) 1590 (2700)

See Notes for Table (below): 1 2,3,7,11 5 4 1,3,7,11 1,3,7,11 5 12, 13 12 — —

Nom.

Output

Nom.

Current (A)

Nom. Max. Nom. OCPD BTU/hr (kWH) CFM (m3/hr)

Rec.

OCPD

Nom.

VDC

Max.

Discharge

Battery

Disconnect

Rating

Current (A) Dimensions

W x D x H

in. (mm)

25.5 x 39.0 x 78.7

(648 x 990 x 2000)

41.0 x 39.0 x 78.7

(1040 x 990 x 2000)

64.4 x 39.0 x 78.7

(1636 x 990 x 2000)

Weight
lb. (kg)

1290
(585)

1422
(645)

2201

(1000)

Heat Dissipation Cooling Airflow

12,200 (3.6) 620 (1050)

19,700 (5.8) 920 (1550)

35,900 (10.5) 1590 (2700)

Notes for Table

1. Nominal (Nom) current is based on full rated output load at nominal input
voltage.

2. Maximum (Max) current is short duration for battery recharge conditions.

3. UPS input cables must be run in separate conduit from output cables.

4. Nominal battery voltage is shown at 2.0 volts/cell per NEC 480-2.

5. OCPD = Overcurrent Protection Device. Recommended AC input and AC
output overcurrent protection represents 125% of nominal full load current
(continuous) plus 100% of recharge current (non-continuous) per NEC 215.

6. Minimum-sized grounding conductors to be per NEC 250-122. Parity-sized
ground conductors are recommended.

7. Wiring requirements: AC Input: 3-phase, 3-wire, plus ground

AC Output: 3-phase, 3-wire, plus ground

8. All wiring is to be in accordance with national and local electric codes.

9. Minimum access clearance is 3 ft. (0.9m) front and 8 in. (203mm) above
the UPS.

10. Top or bottom cable entry through removable access plates. Punch plate to
suit conduit size, then replace.

11. Control wiring and power wiring must be run in separate conduit.

12. Dimensions and weights in table do not include external battery cabinet.

13. 80-200kVA UPS dimensions include UPS wiring section for installation
without Liebert NX BDC. Deduct 15.5" from UPS width when a Liebert NX
BDC will be used.

Additional Notes

• Input and output wiring and breakers for a Liebert NX with Softscale
technology should be sized for the maximum scalable capacity. For example, a
40kVA Liebert NX that is scalable to 80kVA should be installed with wiring
and breakers rated for an 80kVA configuration.

• If site configuration includes a backup emergency generator, it is recom­mended that the engine generator set be properly sized and equipped for a
UPS application. Generator options would typically include an isochronous
governor (generator frequency regulation) and a UPS-compatible regulator
(generator voltage regulation). Consult generator manufacturer for required
generator options and sizing.

• It is recommended that the transfer switch be equipped with auxiliary con­tacts for UPS “on generator” current limit. Consult transfer switch manufac­turer for required transfer switch options and sizing.

• If site configuration requires an external isolated maintenance bypass circuit,
it should be noted that utility AC input might not be in phase with the UPS AC
output. Consult an Emerson Network Power sales representative or applica­tions engineer.

• The UPS must be fed from a solidly grounded wye or delta AC source. Not for
use with impedance-grounded systems, corner-grounded or high leg delta sys­tems. For these applications, an isolation transformer must be installed
between the AC feed and the UPS.

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