62
UPS for 208 Vac Grid, B120US Installation Guide, doc. rel. 3.0
Figure 44: Close-up of Connector Group 1
Table 7: Key to Figure 44
I
TEM
D
ESCRIPTION
P23
Load-on-bypass dry contact, N.O.
P12
Forced Bypass contacts. N.O. When these contacts are closed, the UPS immediately
goes into Bypass mode. These contacts are intended to be used in conjunction with the
Maintenance Bypass function. They should be closed by the user’s maintenance bypass
switch, to ensure that the UPS is in Bypass mode before moving to maintenance Bypass
mode.
P28
Supplies 48 Vdc for battery trip coil.)
P11
Contacts for Emergency Power-Off (EPO) switch, N.O.
P19
Triggers the battery trip coil which opens the battery CB, when the EPO switch is pressed.