6
Electrical Connection
• Connection Checklist
• Recommended Cable Sizes
• Terminal Wiring Diagrams
• Parallel Wiring Diagrams
Follow all warnings listed in the Safety section prior to hardwire terminal connection. The following checklist provides a general guide rather than
a complete outline of procedures.
Connection Checklist
❑ Turn off input power prior to electrical connection.
❑ Check the input, output and battery cables for proper amplitude, phase and polarization.
❑ Connect ground wire(s) between UPS power module(s) and battery module(s).
❑ If the input and output power of the UPS is a Y connection, then note that the Neutral wire and Ground wire are not connected within the UPS
power module.
❑ If the input power system has a floating voltage between Neutral and Ground, and if 0 volts is desired between Neutral and Ground within the
UPS power module, Tripp Lite recommends the following: add a user-supplied isolation transformer to the input of the UPS, and connect the
Neutral wire and Ground wire inside the UPS power module.
❑ If installing multiple UPS modules in parallel, ensure input and output cables are the same length for each module.
Recommended Cable Sizes
UPS Power Module
Model SU50K3/3PM SU80K3/3PM SU50K3/3INTPM SU80K3/3INTPM
UPS System Capacity (kVA) 50 80 50 80
Input Circuit Breaker (A) 100 150 125 200
Input Cable (AWG) 2 1/0 1 3/0
Input Cable (mm
2
)225035 70
Reserve Input Circuit Breaker (A) 75 125 100 150
Reserve Input Cable (AWG) 6 2 4 1
Reserve Input Cable (mm
2
)10 25 16 35
Output Circuit Breaker (A) 75 125 100 150
Output Cable (AWG) 6 2 4 1
Output Cable (mm
2
)102516 35
See Battery Module Owner's Manual or Contact Tripp Lite for Battery Module Cable Size Information.
Installation
(continued)
Floor Weight Loading Table
UPS Power Module
Model SU50K3/3PM SU80K3/3PM SU50K3/3INTPM SU80K3/3INTPM
UPS System Capacity (kVA) 50 80 50 80
Weight (lb) 1276 1540 1012 1155
Weight (kg) 580 700 460 525
Weight Loading (lb/in
2
) 1716 1495 1361 1554
Weight Loading (kg/m
2
) 1208 1054 958 1094
See Battery Module Owner's Manual or Contact Tripp Lite for Battery Module Weight Loading Information.
Torque Specifications
50kVA Models:
• 150A Terminal Blocks: 61 kgf/cm (4.4 ft/lb)
• 200A Terminal Blocks: 102 kgf/cm (7.5 ft/lb)
80kVA Models:
• 200A Terminal Blocks: 102 kgf/cm (7.5 ft/lb)
