Cable Connection; Transformer-Free Ups Cable Connection; Table 2 Cable Connection Method Reference; Table 3 Input Cable Selection List-60Hz - Emerson Liebert APS User Manual

2.5

Cable Connection

WARNING
!
Risk of electric shock. Can cause injury or death.
Disconnect local and remote power supplies before working within.
Read this section thoroughly before attempting to install wiring to this unit.
Ensure that all the UPS input sources are disconnected off before attempting to install wiring
to this unit.
This UPS cables should be connected by a properly trained and qualified electrician.
Refer to the unit model number in Table 2 to determine which instructions to use for installation.
Table 2 Cable connection method reference
UPS Model #
Digits 1-3
AS1 or ASA
AS2 or ASB
AS3 or ASC
AS4 or ASD
AS5 or ASE
AS6 or ASF
2.5.1

Transformer-Free UPS Cable Connection

A junction box is factory-installed on each model of the Liebert APS to ease cable connection.
Select the appropriate input cables according to Table 3 and Table 4 based on the UPS rating and
mains frequency; however, it is recommended that you size the over current protection and wiring for
the frame rating to easily allow upgrades to the UPS system.
Table 3 Input cable selection list—60Hz
Maximum Maximum
System Current in
Rated Load UPS Mode
5kVA
10kVA
15kVA
20kVA
The power input and output terminals accept a maximum cable cross-sectional area of 35mm
cross-sectional area is 16mm
Use of 90°C copper wire is recommended
Table 4 Input cable selection list—50Hz
Maximum
System Rated
Load
5kVA
10kVA
15kVA
20kVA
The power input and output terminals accept a maximum cable cross-sectional area of 35mm
cross-sectional area is 16mm
90°C copper wire recommended
Frame Type
10 Bay Transformer-free
16 Bay Transformer-free
12 Bay Transformer-based
16 Bay Transformer-based
10 Bay Transformer-free
16 Bay Transformer-free
Input voltage - 200VAC
Recommended
Input Protection
Circuit Breaker
27A 50A
53A 70A
80A 100A
106A 125A
2
(6AWG); the rated torque is 4.52Nm (40 in-lb).
Input Voltage - 220VAC
Maximum Recommended
Current in Input Protection
UPS Mode Circuit Breaker
25A 63A
49A 63A
73A 100A
97A 125A
2
(6AWG); the rated torque is 4.52Nm (40 in-lb).
Manual
Section
2.5.1
2.5.1
2.5.2
2.5.2
2.5.3
2.5.3
Input voltage - 208VAC
Maximum Recommended
Current in Input Protection
UPS Mode Circuit Breaker
26A 50A
51A 70A
77A 100A
102A 125A
Input Voltage - 230VAC
Maximum Recommended
Current in Input Protection
UPS Mode Circuit Breaker
24A 63A
47A 63A
70A 100A
93A 125A
25
Installation
Input voltage - 240VAC
Maximum Recommended
Current in Input Protection
UPS Mode Circuit Breaker
23A 50A
45A 70A
67A 100A
90A 125A
2
(2AWG); the minimum cable
Input Voltage - 240VAC
Maximum Recommended
Current in Input Protection
UPS Mode Circuit Breaker
23A 63A
45A 63A
67A 100A
90A 125A
2
(2AWG); the minimum cable
®
Liebert APS
™