Sola HD S5KC, User Manual

Page: 41 / 100

2.5.3 Transformer-Free UPS—Dual Inverter Frames
A junction box is factory-installed on all models of the SolaHD S5KC to ease cable connection� Select the appropriate
input cables according to Tables 11 and 12 based on the UPS rating and mains frequency� Emerson recommends sizing
the overcurrent protection and wiring for the frame rating for easing upgrades to the UPS system�
To connect the cable:
NOTE
Input and output cables must be run in separate conduit before cable connection.
1. Remove the knockouts at the junction box (see
Figure 31 ) and pull the cables through them, leaving some slack for
installation�
Figure 39: Knockouts
2. Connect the cables to the corresponding terminal of the power input and output terminals�
3. Tighten the screws to 4�52Nm (40 in-lb) with a 13mm (1/2 in) torque wrench�
Table 11: Input Cable Selection for Transformer-Free Dual Inverter Frames (50/60 Hz)
Maximum
System Rated
Load
Input Voltage – 200/100VAC Input Voltage – 208/120VAC Input Voltage – 240/120VAC
Maximum
Current in UPS
Mode
Recommended
Input Protection
Circuit Breaker
Maximum
Current in UPS
Mode
Recommended
Input Protection
Circuit Breaker
Maximum
Current in UPS
Mode
Recommended Input
Protection Circuit
Breaker
5kVA 28A 50A 27A 50A 27A 50A
10kVA 56A 63A 54A 63A 54A 63A
15kVA 84A 100A 80A 100A 80A 100A
20kVA 112A 125A 107A 125A 107A 125A
The power input and output terminals accept a maximum cable cross-sectional area of 35mm2 (2AWG); the minimum cable cross- sectional area is
16mm2 (6AWG); and the rated torque is 4�52Nm (40 in-lb);�
90°C copper wire is recommended�
Table 12: Input cable selection for transformer-free dual inverter frames (50/60 Hz)
Maximum System
Rated Load
Input Voltage – 220/110VAC Input Voltage – 230/115VAC Input Voltage – 220/127VAC
Maximum
Current in UPS
Mode
Recommended
Input Protection
Circuit Breaker
Maximum
Current in UPS
Mode
Recommended
Input Protection
Circuit Breaker
Maximum
Current in UPS
Mode
Recommended
Input Protection
Circuit Breaker
5kVA 28A 50A 28A 50A 27A 50A
10kVA 56A 63A 56A 63A 54A 63A
15kVA 84A 100A 84A 100A 80A 100A
20kVA 112A 125A 112A 125A 107A 125A
The power input and output terminals accept a maximum cable cross-sectional area of 35mm2 (2AWG); the minimum cable
cross-sectional area is 16mm2 (6AWG); and the rated torque is 4�52Nm (40 in-lb);
90°C copper wire is recommended�
Output Cable Knockout
10-Bay SolaHD S5KC
No Transformer
Input Cable Knockout
Output Cable Knockout
Input Cable Knockout
16-Bay SolaHD S5KC
No Transformer
32 | 2�0
INSTALLATION
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