Installing The Ac Power Rectifiers; Connecting The Ac Power Shelf Cables To The Dc Pems - Alcatel 7750 SR-12 Installation Manual

I
NSTALLING THE
NOTE: For normal operation, the 7750 SR-12 requires at least two rectifiers in an AC power
shelf. A third rectifier can be installed in the same shelf to provide redundancy. When three
rectifiers are installed they equally power share the load. If a rectifier fails or if power is removed
to a unit, the other two rectifiers power share the full load and maintain continuous system
operation.
Caution:
when installing a rectifier.
Notes:
C T
ONNECTING
Warning:
• Make sure that power is removed from the AC circuit (power source) before handling power
cables to the AC power shelf, rectifiers, and DC PEMs.
• AC power shelf cables are typically shipped unterminated. Refer to
on page
7750 SR-12
AC P
OWER
A single AC power rectifier weighs approximately 9.5 lbs. (4.3 kg). Use both hands
Follow the manufacturer's instructions to install AC power rectifiers.
AC P
HE OWER
69.
R
ECTIFIERS
S C
HELF ABLES TO THE
Installing Power Supplies
DC PEM
S
Preparing the Power Cable
Page 77