Liebert NXL 사용자 설명서
Electrical Installation
7
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.
4. Nominal battery voltage is shown at 2.0 volts / cell.
Table 4
Current ratings—battery
UPS Rating
Nominal VDC
Maximum Battery
Current at EOD
External Breaker
Trip, Amps
kVA
kW
250
225
480
615
700
300
270
480
737
800
400
360
480
981
1000
Table 5
Recommended conduit and cable sizes
Rectifier Input
UPS Rating
Voltage
(VAC)
Nominal Selection
Alternate Selection
Top Cable Entry Input
Wire & Conduit
Ph, G THW / FMC
Bottom Cable Entry
Input Wire & Conduit
Ph, G THW / RNC
Top Cable Entry Input
Wire & Conduit
Ph, G THW / FMC
Bottom Cable Entry
Input Wire & Conduit
Ph, G THW / RNC
kVA
kW
Input
Bypass
Output
250
225
480
480
480
(2) 2.5C 3-250kcmil,
#1/0AWG
(2) 2.5C 3-250kcmil,
#1/0AWG
(3) 2C 3-#2/0AWG,
#1/0AWG
(3) 2C 3-#2/0AWG,
#1/0AWG
300
270
480
480
480
(2) 3C 3-350kcmil,
#1/0AWG
(2) 3C 3-350kcmil,
#1/0AWG
(3) 2.5C 3-#4/0AWG,
#1/0AWG
(3) 2.5C 3-#4/0AWG,
#1/0AWG
400
360
480
480
480
(2) 3C 3-500kcmil,
#1/0AWG
(2) 3.5C 3-500kcmil,
#1/0AWG
(3) 2.5C 3-250kcmil,
#1/0AWG
(3) 2.5C 3-250kcmil,
#1/0AWG
Bypass Input
UPS Rating
Voltage (VAC)
Nominal Selection
Alternate Selection
Top Cable Entry Input
Wire & Conduit
Ph, N, G THW / FMC
Bottom Cable Entry
Input Wire & Conduit
Ph, N, G THW / RNC
Top Cable Entry Input
Wire & Conduit
Ph, N, G THW / FMC
Bottom Cable Entry
Input Wire & Conduit
Ph, N, G THW / RNC
kVA
kW
Input
Bypass
Output
250
225
480
480
480
(3) 2.5C 3-#2/0AWG,
2-#1/0AWG, #1/0AWG
(3) 3C 3-#2/0AWG,
2-#1/0AWG, #1/0AWG
(2) 3C 3-250kcmil,
2-#4/0AWG, #1/0AWG
(2) 3C 3-250kcmil,
2-#4/0AWG, #1/0AWG
300
270
480
480
480
(3) 2.5C 3-#4/0AWG,
2-#1/0AWG, #1/0AWG
(3) 3C 3-#4/0AWG,
2-#1/0AWG, #1/0AWG
(2) 3C 3-350kcmil,
2-#4/0AWG, #1/0AWG
(2) 3.5C 3-350kcmil,
2-#4/0AWG, #1/0AWG
400
360
480
480
480
(3) 3C 3-250kcmil,
2-#4/0AWG, #1/0AWG
(3) 3C 3-250kcmil,
2-#4/0AWG, #1/0AWG
(2) 3.5C 3-500kcmil,
2-350kcmil, #1/0AWG
(2) 4C 3-500kcmil,
2-350kcmil, #1/0AWG
Output
UPS Rating
Voltage (VAC)
Nominal Selection
Alternate Selection
Top Cable Entry Input
Wire & Conduit
Ph, N, G THW / FMC
Bottom Cable Entry Input
Wire & Conduit
Ph, N, G THW / RNC
Top Cable Entry Input
Wire & Conduit
Ph, N, G THW / FMC
Bottom Cable Entry
Input Wire & Conduit
Ph, N, G THW / RNC
kVA
kW
Input
Bypass
Output
250
225
480
480
480
(3) 2.5C 3-#2/0AWG,
2-#1/0AWG, #1/0AWG
(3) 3C 3-#2/0AWG,
2-#1/0AWG, #1/0AWG
(3) 2.5C 3-#2/0AWG,
2-#1/0AWG, #1/0AWG
(3) 3C 3-#2/0AWG,
2-#1/0AWG, #1/0AWG
300
270
480
480
480
(3) 2.5C 3-#4/0AWG,
2-#1/0AWG, #1/0AWG
(3) 3C 3-#4/0AWG,
2-#1/0AWG, #1/0AWG
(3) 2.5C 3-#4/0AWG,
2-#1/0AWG, #1/0AWG
(3) 3C 3-#4/0AWG,
2-#1/0AWG, #1/0AWG
400
360
480
480
480
(3) 3C 3-250kcmil,
2-#4/0AWG, #1/0AWG
(3) 3C 3-250kcmil,
2-#4/0AWG, #1/0AWG
(3) 3C 3-250kcmil,
2-#4/0AWG, #1/0AWG
(3) 3C 3-250kcmil,
2-#4/0AWG, #1/0AWG
Battery
UPS Rating
Voltage (VAC)
Nominal Selection
Alternate Selection
Top Cable Entry Input
Wire & Conduit
Wires, G THW / FMC
Bottom Cable Entry Input
Wire & Conduit
Wires, G THW / RNC
Top Cable Entry Input
Wire & Conduit
Wires, G THW / FMC
Bottom Cable Entry Input
Wire & Conduit
Wires, G THW / RNC
kVA
kW
Input
Bypass
Output
250
225
480
480
480
(2) 2.5C 2-350kcmil,
#1/0AWG
(2) 2.5C 2-350kcmil,
#1/0AWG
(3) 2C 2-#4/0AWG,
#1/0AWG
(3) 2C 2-#4/0AWG,
#1/0AWG
300
270
480
480
480
(2) 2.5C 2-500kcmil,
#1/0AWG
(2) 3C 2-500kcmil,
#1/0AWG
(3) 2C 2-250kcmil,
#1/0AWG
(3) 2C 2-250kcmil,
#1/0AWG
400
360
480
480
480
(3) 2.5C 2-500kcmil,
#4/0AWG
(3) 3C 2-500kcmil,
#4/0AWG
(4) 2C 2-250kcmil,
#4/0AWG
(4) 2.5C 2-250kcmil,
#4/0AWG
If the UPS is used in a four-wire system, the neutral ground jumper must be removed.