Specifications
25
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.
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
Nominal
Current
Maximum
Current
External
100% Breaker
Trip, Amps
External
80% Breaker
Trip, AmpskVA kW Input Bypass Output
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
Current
10 Minute
Overload
External Breaker
Trip, AmpskVA kW Input Bypass Output
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
Current
10 Minute
Overload
External Breaker
Trip, AmpskVA kW Input Bypass Output
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
VDC
Max Battery
Current at EOD
External Breaker
Trip, AmpskVA kW
250 225 480 615 700
300 270 480 737 800
400 360 480 981 1000
