Lucent Technologies Lineage
®
2000 400A, 60Hz Ferroresonant Rectifier J85503C-3
5 - 4 Installation
Issue 10 July 2000
AC Input Power
The customer is responsible for providing ac power to the rectifier.
Separate branch circuits must be provided to each rectifier to ensure the
reliability of the system. A branch circuit consists of all the phase leads
to a rectifier plus the ac equipment ground (AC EG). The wiring method
should meet national and local codes.
Figure 5-3 shows the ac input wire termination points. Figure 5-4, top
view of the rectifier, shows openings for the ac input conduit and two
required grounds.
Table 5-A gives requirements for the ac power installation.
Table 5-A shows the recommended customer-supplied fuse size and
type for the branch circuit protection located in the ac service panel
supplying the rectifier input circuits. The fuse types shown are
BUSSMANN
TM
fuses. Equivalent UL listed fuses or circuit breakers
can be used in lieu of the fuses shown. If circuit breakers are used, they
should have trip elements of an equivalent rating to the recommended
fuse.
The “green wire,” ac equipment ground (AC EG), is also known as
frame ground (FR GRD). The connection for this ground is on the
inside back wall of the rectifier.
Instantaneous trip (1 cycle) specifications for input wiring protection
devices (fuses or circuit breakers) for the rectifier should be a minimum
of 20X the RMS load of the rectifier to avoid nuisance tripping at
start-up.
The rectifier also requires a supplementary parallel ground, called
central office (CO) ground. Two connections for this ground are labeled
on top of the rectifier. Only one connection is required, whichever is
more convenient. (See “Supplemental Central Office (CO) Ground.”)
