Specifications

Table 7

Liebert NXL system and inverter efficiencies

 

 

 

 

 

 

 

 

 

 

 

 

 

UPS Rating

 

Voltage, VAC

 

System Efficiency

Inverter Efficiency

 

 

 

 

 

 

 

 

 

 

kVA

kW

Input

Bypass

 

Output

100%

50%

100%

50%

 

 

 

 

 

 

 

 

 

 

250

225

480

480

 

480

93.9

93.2

94.8

94.1

 

 

 

 

 

 

 

 

 

 

300

270

480

480

 

480

94.0

93.3

94.9

94.2

 

 

 

 

 

 

 

 

 

 

400

360

480

480

 

480

94.2

93.4

95.1

94.4

 

 

 

 

 

 

 

 

 

 

Table 8

 

Current ratings—rectifier input

 

 

 

 

 

 

 

 

 

 

 

 

 

UPS Rating

 

Voltage, VAC

 

 

External

External

 

 

 

 

 

 

 

 

Nominal

Maximum

100% Breaker

80% Breaker

 

 

 

 

 

 

 

 

kVA

 

kW

 

Input

 

Bypass

Output

Current

Current

Trip, Amps

Trip, Amps

 

 

 

 

 

 

 

 

 

 

 

 

250

 

225

 

480

 

480

480

313

392

400

500

 

 

 

 

 

 

 

 

 

 

 

 

300

 

270

 

480

 

480

480

376

469

500

600

 

 

 

 

 

 

 

 

 

 

 

 

400

 

360

 

480

 

480

480

500

625

700

800

 

 

 

 

 

 

 

 

 

 

 

 

Table 9

Current ratings—bypass input

 

 

 

 

 

 

 

 

 

 

 

 

UPS Rating

 

Voltage, VAC

 

Nominal

10 Minute

External Breaker

 

 

 

 

 

 

kVA

kW

Input

Bypass

 

Output

Current

Overload

Trip, Amps

 

 

 

 

 

 

 

 

 

250

225

480

480

 

480

301

376

400

 

 

 

 

 

 

 

 

 

300

270

480

480

 

480

361

451

500

 

 

 

 

 

 

 

 

 

400

360

480

480

 

480

481

601

700

 

 

 

 

 

 

 

 

 

Table 10

Current ratings—output

 

 

 

 

 

 

 

 

 

 

 

 

 

UPS Rating

 

Voltage, VAC

 

Nominal

10 Minute

External Breaker

 

 

 

 

 

 

 

kVA

 

kW

Input

Bypass

 

Output

Current

Overload

Trip, Amps

 

 

 

 

 

 

 

 

 

 

250

 

225

480

480

 

480

301

376

400

 

 

 

 

 

 

 

 

 

 

300

 

270

480

480

 

480

361

451

500

 

 

 

 

 

 

 

 

 

 

400

 

360

480

480

 

480

481

601

700

 

 

 

 

 

 

 

 

 

 

Table 11

Current ratings—battery

 

 

 

 

 

 

 

 

UPS Rating

Nominal

 

Max Battery

External Breaker

 

 

 

kVA

kW

VDC

 

Current at EOD

Trip, Amps

 

 

 

 

 

 

250

225

480

 

615

700

 

 

 

 

 

 

300

270

480

 

737

800

 

 

 

 

 

 

400

360

480

 

981

1000

 

 

 

 

 

 

Notes on Tables

1.Nominal input current (considered continuous) is based on full-rated output load. Maximum current includes nominal input current and maximum battery recharge current (considered noncontinuous). Continuous and noncontinuous current are defined in nec 100. Maximum input current is controlled by the current limit setting which is adjustable. Values shown are for maximum setting of 125%. Standard factory setting is 125%.

2.Recommended bypass external overcurrent protection is based on 125% overload capacity for 10 minutes.

3.All recommended external overcurrent protections are based on 80% rated breakers.

4.Nominal battery voltage is shown at 2.0 volts / cell.

25

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Emerson 250 Liebert NXL system and inverter efficiencies, Current ratings-rectifier input, Current ratings-bypass input

250 specifications

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