Power Subsystem; Dc Power Distribution Overview - Intel NetStructure ZT 5085 12U Manual

Power Subsystem

Central office power plants are based on redundant High Availability -48 V DC power. AC power
delivered by the public utility is rectified to DC and stored in battery systems, which in turn supply
the equipment. Equipment is fed from two sets of DC -48 V power and returns.
Increasingly these feeds are being provided by independent power plants. In environments with
independent power plants, the two feeds must be completely isolated from one another. It is
imperative that these feeds never join. Failure to properly design a chassis' power input subsystem
could result in voltage transference, system damage, or safety issues
Intel has designed the ZT 5085 platform specifically to meet the increasing requirements of the
telco environment and central office. The ZT 5085 chassis delivers a highly redundant N+N power
system including dual power domains on the midplane. The system is designed to minimize the
impact caused by failures of power feeds, power supplies, the midplane, or the cooling subsystems.
4.1

DC Power Distribution Overview

The ZT 5085 implements an N+N redundant set of power supplies and N+N redundant power
inputs. Figure 22, "ZT 5085 Power Distribution Overview (DC System)" on page 48
how power is distributed within the ZT 5085 chassis.
Technical Product Specification
Power Subsystem
4
illustrates
47