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UPS 225 - 275 kVA
User’s and Installation Guide
1027212
Revision C
31
Terminal TB1 Name Descrition
1 Remote EPO NC
Dry contact used to active remote EPO of UPS.
2 Remote EPO return
3 Remote EPO NO
4 Remote EPO return
5 Battery aux
6 Battery aux return
7 48 Vdc battery shunt trip +
8 48 Vdc battery shunt trip -
9 Not used
10 Not used
Terminal TB2 Name Descrition
1 Pull chain
Back control for parallel operation.
2 Pull chain return
3 Alarm relay NC
General purpose normally-open (NO) and normally-closed
(NC) relay contacts.
4 Alarm relay return
5 Alarm relay NO
6 Alarm relay return
7 Not used
8 Not used
9 Not used
10 Not used
Terminal TB3 Name Descrition
1 Building alarm 1
Programmable UPS alarm. Activated by a remote dry contact
closure.
2 Building alarm 1 return
3 Building alarm 2
Programmable UPS alarm. Activated by a remote dry contact
closure.
4 Building alarm 2 return
5 Building alarm 3
Programmable UPS alarm. Activated by a remote dry contact
closure.
6 Building alarm 3 return
7 Building alarm 4
Programmable UPS alarm. Activated by a remote dry contact
closure.
8 Building alarm 4 return
9 Building alarm 5
Programmable UPS alarm. Activated by a remote dry contact
closure.
10 Building alarm 5 return
Table 3-1. TB1, TB2, and TB3 interface connections