Connecting Power Cables - Liebert UHA1R-0100 User Manual

Battery module

2.5 Connecting Power Cables

The I/O cables, battery cables and 10A charger cables (optional) are required for connection. When connecting the
cables, you should follow the local wiring regulations, take the environment situation into account, and refer to Table
3B of IEC60950-1.
The maximum current in different operating modes is listed in Table 2-2, the recommended minimum cable CSA is
listed in Table 2-3. Select the appropriate cables according to Table 2-2 and Table 2-3.
Model
10kVA (1-input 1-output)
10kVA (3-input 1-output)
Note:
When the battery cables are selected, according to the current value shown in this table, the max. allowable voltage drop is 4Vdc.
Do not ring the cables to avoid increasing the electromagnetic interference.
1: The input mains current of the rectifier and the bypass.
2: Non-linear load (switch mode power) affects the neutral cable design of the output and the bypass. The neutral cable current
may exceed the rated phase current, up to1.732 times as large as the rated current
Model
10kVA (1-input 1-output)
10kVA (3-input 1-output)
The recommended I/O MCB capability of the UPS is listed in Table 2-4. Select the MCBs according to your
requirements.
Model
10kVA (1-input 1-output)
10kVA (3-input 1-output)
UPS
Figure 2-13 Installing UPS with battery modules
Table 2-2 Max. steady state AC and DC current
1 2
、
Mains input current upon battery
charging with max. ability
220V 230V
55 55
19 19
Table 2-3 Single UPS cable CSA (unit: mm
Input
10
10
Table 2-4 UPS I/O MCB selection
Recommended
Input interface capability of input
external MCB
Terminal block
Terminal block
Liebert ITA 10kVA UPS User Manual
®
Chapter 2 Single UPS Installation And Commissioning
Rated current (A)
Total output current
240V 220V 230V
55 46 44
19 46 44
2
, ambient temperature: 25° C
Output Neutral cable
10 10
10 10
Battery MCB
125A DC63A
125A DC63A
2
at full load Battery discharging current
upon min. battery voltage
240V
64
42
42 64
）
PE
10
10
Recommended
Output interface capability of output
external MCB
Terminal block
Terminal block
15
Battery
16
16
70A
70A