20
Installing the BBU in the PS4890 Cabinet
Installing the DCDU-03B
a
1. Slide the DCDU-03B into the
PS4890 cabinet. Then, tighten the
four M6 screws.
2. Install the DCDU-03B input power cable.
Connect one end of the power cable in blue to the
DC output terminal LOAD2(-) on the power subrack
and the other end to the DC input terminal NEG(-)
on the DCDU-03B . Connect one end of the power
cable in black to the DC output terminal RTN(+) on
the power subrack and the other end to the DC
input terminal RTN(+) on the DCDU-03B
.
Installing the BBU Case
b
Slide the BBU case into the PS4890 cabinet.
Then, tighten the four M6 screws.
DC output
terminal on
the power
subrack
DC input
terminal on the
DCDU-03B
